TRINITY INDUSTRIES INC
10-K405, 1999-06-29
RAILROAD EQUIPMENT
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<PAGE>   1
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                               ------------------
                                    FORM 10-K
                               ------------------

(Mark One)

[X]            ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                    For the fiscal year ended March 31, 1999

                                       OR

[ ]           TRANSITION  REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934

                    For the transition period from          to


                          COMMISSION FILE NUMBER 1-6903

                            TRINITY INDUSTRIES, INC.
             (Exact name of registrant as specified in its charter)

             DELAWARE                                     75-0225040
    (State of Incorporation)                (I.R.S. Employer Identification No.)

        2525 STEMMONS FREEWAY
            DALLAS, TEXAS                                 75207-2401
(Address of principal executive offices)                  (Zip Code)

        Registrant's telephone number, including area code (214) 631-4420

           Securities Registered Pursuant to Section 12(b) of the Act

                                                     Name of each exchange
           Title of each class                        on which registered
           -------------------                       ---------------------
     COMMON STOCK, $1.00 PAR VALUE                NEW YORK STOCK EXCHANGE, INC.

           Securities Registered Pursuant to Section 12(g) of the Act:

                                      NONE

                               ------------------

         INDICATE BY CHECK MARK WHETHER THE REGISTRANT (1) HAS FILED ALL REPORTS
REQUIRED TO BE FILED BY SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF
1934 DURING THE PRECEDING 12 MONTHS AND (2) HAS BEEN SUBJECT TO SUCH FILING
REQUIREMENTS FOR THE PAST 90 DAYS.

                                     Yes  [X]    No [  ]


                  INDICATE BY CHECK MARK IF DISCLOSURE OF DELINQUENT FILERS
PURSUANT TO ITEM 405 OF REGULATION S-K IS NOT CONTAINED HEREIN, AND WILL NOT BE
CONTAINED, TO THE BEST OF REGISTRANT'S KNOWLEDGE, IN DEFINITIVE PROXY OR
INFORMATION STATEMENTS INCORPORATED BY REFERENCE IN PART III OF THIS FORM 10-K
OR ANY AMENDMENT TO THIS FORM 10-K. [X]

         The aggregate market value of voting stock held by nonaffiliates of the
Registrant is $1,234,741,474 as of May 28, 1999.

                                   40,551,785

        (Number of Shares of common stock outstanding as of May 28, 1999)
================================================================================
                                    (Continued on reverse side)






<PAGE>   2





(Continued  from cover page)


                        DOCUMENTS INCORPORATED BY REFERENCE

      Portions of the Registrant's 1999 Annual Report to Stockholders for the
fiscal year ended March 31, 1999 are incorporated by reference into Parts I and
II hereof and portions of the Registrant's definitive Proxy Statement dated June
18, 1999 for the 1999 Annual Meeting of Stockholders to be held July 21, 1999
are incorporated by reference into Part III hereof.


<PAGE>   3
                                     PART I


ITEM 1.  BUSINESS

         GENERAL DEVELOPMENT OF BUSINESS. Trinity Industries, Inc. (the
"Registrant" or "Trinity") was originally incorporated under the laws of the
State of Texas in 1933. On March 27, 1987, Trinity became a Delaware corporation
by merger into a wholly-owned subsidiary of the same name.

         NARRATIVE DESCRIPTION OF BUSINESS AND FINANCIAL INFORMATION ABOUT
INDUSTRY SEGMENTS. The Registrant is engaged in the manufacture, marketing, and
leasing of a wide variety of products consisting of the following five business
segments or groups:

         RAILCAR GROUP. The Registrant manufactures railroad freight cars,
principally pressure and non-pressure tank cars, hopper cars, box cars,
intermodal cars and gondola cars used for transporting a wide variety of
liquids, gases and dry cargo. The Registrant is also engaged in railcar
maintenance, management, and/or leasing to various industries.

         Tank cars transport products such as liquefied petroleum gas, liquid
fertilizer, sulfur, sulfuric acids and corn syrup. Covered hopper cars carry
cargo such as grain, dry fertilizer, plastic pellets and cement. Open-top
hoppers haul coal, and top-loading gondola cars transport a variety of heavy
bulk commodities such as scrap metals, finished flat steel products, machinery
and lumber. Intermodal cars transport various products which have been loaded in
containers to minimize shipping costs.

         The Registrant holds patents of varying duration for use in its
manufacture of railcar and component products. The Registrant cannot quantify
the importance of such patents, but patents are believed to offer a marketing
advantage in certain circumstances. No material revenues are received from
licensing of these patents.

         A number of well established companies are presently engaged in the
manufacture of railcars on a large scale. The Registrant strives to be
competitive through improvements in the efficiency of the manufacturing process
and its creative designs to benefit customers.

         A wholly-owned leasing subsidiary, Trinity Industries Leasing Company
("TILC"), incorporated in 1979, is engaged in leasing specialized types of
railcars to industrial companies in the petroleum, chemical, grain, food
processing, fertilizer and other industries which supply cars to the railroads.
At March 31, 1999, TILC had 10,887 railcars under lease and/or management
agreement.

         Substantially all equipment leased by TILC was purchased from the
Registrant at prices comparable to the prices for equipment sold by the
Registrant to third parties. As of March 31, 1999, TILC had equipment on lease
or available for lease purchased from the Registrant at a cost of $456.4
million. Generally, TILC purchases the equipment to be leased only after a
lessee has committed to lease such equipment.

         The volume of equipment purchased and leased by TILC depends upon a
number of factors, including the demand for equipment manufactured by the
Registrant, the cost and availability of funds to finance the purchase of
equipment, the Registrant's decision to solicit orders for the purchase or lease
of equipment and factors which may affect the decision of the Registrant's
customers as to whether to purchase or lease equipment.


                                       1

<PAGE>   4




         A number of well established companies actively compete with TILC in
the business of owning and leasing railcars, as well as banks, investment
partnerships and other financial and commercial institutions.

         INDUSTRIAL GROUP. The Registrant is engaged in manufacturing metal
containers for the storage and transportation of liquefied petroleum ("LP") gas
and anhydrous ammonia fertilizer. Pressure LP gas containers are utilized at
industrial plants, utilities, small businesses, and in suburban and rural areas
for residential heating and cooking needs. Fertilizer containers are
manufactured for highway and rail transport, bulk storage, farm storage, and the
application and distribution of anhydrous ammonia. The Registrant also makes
heat transfer equipment for the chemical, petroleum, and petrochemical
industries and a complete line of custom vessels, standard steam jacketed
kettles, mix cookers, and custom-fabricated cooking vessels for the food, meat,
dairy, pharmaceutical, cosmetic, and chemical industries.

         The Registrant also manufactures butt weld type fittings, flanges, and
pressure and non-pressure container heads that are made from ferrous and
non-ferrous metals and their alloys. The weld fittings include caps, elbows,
return bends, concentric and eccentric reducers, full and reducing outlet tees,
and a full line of pipe flanges, all of which are pressure rated. The Registrant
manufactures and stocks, in standard, extra-heavy, and double-extra-heavy
weights and in various diameters, weld caps, tees, reducers, elbows, return
bends, flanges, and also manufactures to customer specifications. The basic raw
materials for weld fittings and flanges are carbon steel, stainless steel,
aluminum, chrome-moly, and other metal tubing or seamless pipe and forgings. The
Registrant sells its weld fittings and flanges to distributors and to other
manufacturers of weld fittings.

         Container heads manufactured by the Registrant are pressed metal
components used in the further manufacture of a finished product. In addition,
the Registrant sells container heads to other manufacturers. Container heads are
manufactured in various shapes and may be pressure rated or non-pressure,
depending on the intended use in further manufacture. Other pressed shapes are
also hot- or cold-formed to customer requirements.

         The demand for LP gas containers is seasonal and mild winters for the
past three years reduced demand for LP gas containers in the United States.
Competitors range from large to small local companies. Competition from Asian
imports for fittings and flanges has been intense and has resulted in sharply
reduced prices for these products.

         HIGHWAY CONSTRUCTION PRODUCTS GROUP. The highway construction products
manufactured by the Registrant include highway guardrail and highway safety
devices and related barrier products, and beams and girders. These products are
used in the highway construction industries. Generally, customers for highway
guardrail and highway safety devices are highway departments or subcontractors
on highway projects. Sales of beams and girders are to general contractors and
subcontractors on highway construction projects.

         The Registrant holds patents and is a licensee for certain of its
guardrail and end-treatment products that enhance its worldwide competitive
position for these products. The Registrant is the largest producer of these
products in North America, with products in use in all 50 states, as well as
Canada, Mexico, the Caribbean and Europe.

                                       2

<PAGE>   5


         INLAND BARGE GROUP. The Registrant produces river hopper barges, inland
tank barges and fiberglass barge covers. River hopper barges are used to carry
coal, grain and other commodities by various barge transport companies. Tank
barges are used to transport liquid products. The Registrant is North America's
leading producer of inland barges and one of the largest producers of fiberglass
barge covers. The inland barge business is made up of a few major manufacturers.
The Registrant strives to compete through efficiency in operations and quality
of product.

         CONCRETE, AGGREGATE & ALL OTHER GROUP. The Registrant is engaged in the
production and manufacturing of ready-mix concrete and aggregates primarily in
Texas and Louisiana. Ready-mix concrete and aggregates are used in the building
and foundation industry, and customers include primarily owners, contractors,
and sub-contractors. The concrete and aggregate business is extremely
competitive depending upon the geographical area. The Registrant strives to
compete through service and efficiency of operations.

Various financial information concerning the Registrant's segments for each of
the last three fiscal years is included in the Registrant's 1999 Annual Report
to Stockholders beginning on page 27 under the heading "Segment Information",
and such section is incorporated herein by reference.

         MARKETING, RAW MATERIALS AND EMPLOYEES. As of March 31, 1999, the
Registrant operated in the continental United States, Mexico, and Brazil. The
Registrant sells substantially all of its products through its own salesmen
operating from offices in the following states and foreign countries: Alabama,
Illinois, Kentucky, Louisiana, Michigan, North Carolina, Ohio, Pennsylvania,
Texas, Utah, Brazil and Mexico. Independent sales representatives are also used
to a limited extent. The Registrant primarily markets its transportation and
industrial products throughout the United States. Except in the case of weld
fittings, guardrail, and standard size LP gas containers, the Registrant's
products are ordinarily fabricated to the customer's specifications pursuant to
a purchase order.

         The principal materials used by the Registrant are steel plate,
structural steel shapes, steel forgings, aluminum and cement and aggregate
material for ready-mix concrete. There are numerous domestic and foreign sources
of such steel and most other materials used by the Registrant.

         The Registrant currently has approximately 17,450 employees, of which
approximately 14,000 are production employees and 3,450 are administrative,
sales, supervisory, and office employees.

         RECENT DEVELOPMENTS. Information concerning the Registrant's business
acquisitions are included in the Registrant's 1999 Annual Report to Stockholders
under the heading "Acquisitions and Divestiture," beginning on page 29, and such
section is incorporated herein by reference.


         ENVIRONMENTAL MATTERS. The Registrant is subject to comprehensive and
frequently changing federal, state and local environmental laws and regulations,
including those governing emissions of air pollutants, discharges of wastewater
and storm waters, and the disposal of nonhazardous and hazardous waste. The
Registrant anticipates that it may incur costs in the future to comply with
currently existing laws and regulations and any new statutory requirements. Such
costs are not expected to be material to the Registrant.

         OTHER MATTERS. To date, the Registrant has not suffered any material
shortages with respect to obtaining sufficient energy supplies to operate its
various plant facilities or its


                                       3


<PAGE>   6


transportation vehicles. Future limitations on the availability or consumption
of petroleum products (particularly natural gas for plant operations and diesel
fuel for vehicles) could have an adverse effect upon the Registrant's ability to
conduct its business. The likelihood of such an occurrence or its duration, and
its ultimate effect on the Registrant's operations, cannot be reasonably
predicted at this time.

ITEM 2. PROPERTIES.

         The Registrant principally operates in various locations throughout the
United States with other facilities in Mexico and Brazil, all of which are
considered to be in good condition, well maintained, and adequate for its
purposes.

<TABLE>
<CAPTION>

                                                      Approximate
                                                      Square Feet            Productive
                                               --------------------------     Capacity
                                                  Owned         Leased        Utilized
                                               ------------  ------------   ------------

<S>                                            <C>           <C>            <C>
Railcar Group                                     6,162,000       434,000            90%
Industrial Group                                  1,683,000       317,000            50%
Highway Construction Products Group               1,573,000        10,000            75%
Inland Barge Group                                  765,000        45,000            70%
Concrete, Aggregate, & All Other                    224,000            --            85%
Executive Offices                                   173,000            --           N/A
                                                 ----------       -------
                                                 10,580,000       806,000
</TABLE>


ITEM 3.  LEGAL PROCEEDINGS.

         The Registrant is involved in various claims and lawsuits incidental to
its business. In the opinion of management, these claims and suits in the
aggregate will not have a material adverse effect on the Registrant's
consolidated financial statements.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.   None.


                                     PART II

ITEM 5.  MARKET FOR THE REGISTRANT'S COMMON STOCK AND RELATED STOCKHOLDER
         MATTERS.

         Market for the Registrant's common stock and related stockholder
matters are incorporated herein by reference from the information contained on
page 1 under the heading "Company Profile" and on page 36 under the heading
"Common Stock Closing Price Range" of the Registrant's 1999 Annual Report to
Stockholders.

ITEM 6.  SELECTED FINANCIAL DATA.

         Selected financial data is incorporated herein by reference from the
information contained on page 18 under the heading "Selected Financial Data" of
the Registrant's 1999 Annual Report to Stockholders.

ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS.

         Management's discussion and analysis of financial condition and results
of operations is incorporated herein by reference from the Registrant's 1999
Annual Report to Stockholders, pages 18 through 22.





                                       4
<PAGE>   7

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

         Quantitative and qualitative disclosures about market risk is
incorporated herein by reference from the information contained on page 21 under
the heading "Market Risk" of the Registrant's 1999 Annual Report to
Stockholders.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

         Financial statements of the Registrant at March 31, 1999 and 1998 and
for each of the three years in the period ended March 31, 1999 and the auditor's
report thereon, and the Registrant's unaudited quarterly financial data for the
two year period ended March 31, 1999, are incorporated herein by reference from
the Registrant's 1999 Annual Report to Stockholders, pages 23 through 36.

ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURE.

         None.

                                    PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT.

         DIRECTORS OF THE REGISTRANT.

         Information concerning the directors of the Registrant is incorporated
herein by reference from the Registrant's proxy statement dated June 18, 1999
for the 1999 Annual Meeting of Stockholders, beginning on page 4, under the
heading "Nominees".

         EXECUTIVE OFFICERS OF THE REGISTRANT.*

         The following table sets forth the names and ages of all executive
officers of the Registrant, all positions and offices with the Registrant
presently held by them, the year each person first became an officer and the
term of each person's office:

<TABLE>
<CAPTION>


                                                                                Officer               Term
Name(1)                            Age                     Office                Since               Expires
- -------                            ---           -------------------------      -------            ----------


<S>                                <C>           <C>                            <C>               <C>
Timothy R. Wallace                 45            Chairman & Chief                  1993            July 1999
                                                    Executive Officer

John L. Adams                      54            Executive Vice President          1999            July 1999

Mark W. Stiles                     50            Senior Vice President             1993            July 1999

Jim S. Ivy                         55            Vice President &
                                                    Chief Financial Officer        1998            July 1999

Michael G. Fortado                 55            Vice President, General
                                                    Counsel, & Secretary           1997            July 1999

Jack L. Cunningham, Jr.            54            Vice President                    1982            July 1999

John M. Lee                        38            Vice President                    1994            July 1999

Michael J. Lintner                 56            Vice President                    1999            July 1999

R. A. Martin                       64            Vice President                    1974            July 1999

Joseph F. Piriano                  62            Vice President                    1992            July 1999

Linda S. Sickels                   48            Vice President                    1995            July 1999

Neil O. Shoop                      55            Treasurer                         1985            July 1999

John E. Rutzler III                58            Controller                        1999            July 1999
</TABLE>









                                       5
<PAGE>   8

* This data is furnished as additional information pursuant to instructions to
Item 401 to Regulation S-K and in lieu of inclusion in the Registrant's Proxy
Statement.

(1)   Mr. Adams joined the Registrant in 1999. Prior to this year, Mr. Adams
      served as chief executive officer for a national financial institution.
      Mr. Ivy joined the Registrant in 1998. Prior to that, Mr. Ivy was a senior
      audit partner for a national public accounting firm. Mr. Fortado joined
      the Registrant in 1997. Prior to that, Mr. Fortado served one year as
      senior vice president, general counsel, and corporate secretary for an oil
      and gas exploration company and prior to that as vice president, corporate
      secretary, and assistant general counsel for an integrated energy company.
      Mr. Lintner joined the Registrant in 1999. Prior to this year, Mr. Lintner
      held executive officer positions with administrative outsourcing and
      professional staffing businesses. Mr. Rutzler joined the Registrant in
      1999. Prior to this year, Mr. Rutzler was vice president-controller for a
      plumbing products company. All of the other above-mentioned executive
      officers have been in the full-time employ of the Registrant or its
      subsidiaries for more than five years. Although the titles of certain such
      officers have changed during the past five years, all have performed
      essentially the same duties during such period of time except for Timothy
      R. Wallace and Mark W. Stiles. Mr. Wallace became Chairman and Chief
      Executive Officer on December 31, 1998. He was previously the President
      and Chief Operating Officer. In addition to Group President, Mr.
      Stiles became Senior Vice President on June 10, 1999.

ITEM 11.  EXECUTIVE COMPENSATION.

         Information on executive compensation is incorporated herein by
reference from the Registrant's proxy statement dated June 18, 1999 for the 1999
Annual Meeting of Stockholders beginning on page 7 under the heading "Executive
Compensation and Other Matters".

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.

         Information concerning security ownership of certain beneficial owners
and management is incorporated herein by reference from the Registrant's proxy
statement dated June 18, 1999 for the 1999 Annual Meeting of Stockholders, page
2, under the heading "Voting Securities and Stockholders".

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.   None.

                                     PART IV

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K.

                  (a)   1&2. Financial statements and financial statement
                             schedules.
                                The financial statements and schedules listed in
                                the accompanying indices to financial statements
                                and financial statement schedules are filed as
                                part of this Annual Report Form 10-K.

                        3.   Exhibits.
                                The exhibits listed in the Index to Exhibits to
                                this report are incorporated herein by
                                reference. Management contracts and compensatory
                                plan arrangements are indicated by a double
                                asterisk ("**") in the Index to Exhibits.




                                       6
<PAGE>   9

                  (b)  Reports on Form 8-K

                             Form 8-K was filed on March 31, 1999 that reported
                             the adoption by the Registrant of a Rights
                             Agreement replacing an existing agreement.



                            Trinity Industries, Inc.
                          Index to Financial Statements
                        and Financial Statement Schedules
                                  (Item 14(a))


<TABLE>
<CAPTION>

                                                                         REFERENCE
                                                                -----------------------------
                                                                                1999 Annual
                                                                   Form          Report to
                                                                   10-K         Stockholders
                                                                  (Page)           (Page)
                                                                -----------    --------------
<S>                                                              <C>           <C>
Consolidated balance sheet at
 March 31, 1999 and 1998 ..............................               --               24
For each of the three years in the
  period ended March 31, 1999:
   Consolidated income statement ......................               --               23
   Consolidated statement of cash flows ...............               --               25
   Consolidated statement of
     stockholders' equity .............................               --               26
   Notes to consolidated financial
     statements .......................................               --               27

Supplemental information:
  Selected quarterly financial data ...................               --               36

Consolidated financial statement schedule
  for each of the three years in the
  period ended March 31, 1999:
      II - Allowance for doubtful accounts ............                9               --

</TABLE>

         All other schedules have been omitted since the required information is
not present or is not present in amounts sufficient to require submission of the
schedules, or because the information required is included in the consolidated
financial statements, including the notes thereto.

         The consolidated financial statements and supplemental information
listed in the above index which are included in the 1999 Annual Report to
Stockholders are incorporated by reference.




                                       7
<PAGE>   10


                                                                     SCHEDULE II

                            Trinity Industries, Inc.
                         Allowance for Doubtful Accounts
                    Years Ended March 31, 1999, 1998 and 1997
                                  (in millions)

<TABLE>
<CAPTION>

                                                          Additions
                                        Balance at       charged to        Accounts        Balance
                                        beginning        costs and         charged         at end
                                         of year          expenses           off           of year
                                     ---------------  ---------------  ---------------  ---------------

<S>                                  <C>              <C>              <C>              <C>
Year Ended March 31, 1999            $           1.7  $           0.7  $           0.5  $           1.9
                                     ===============  ===============  ===============  ===============

Year Ended March 31, 1998            $           1.0  $           0.9  $           0.2  $           1.7
                                     ===============  ===============  ===============  ===============

Year Ended March 31, 1997            $           1.1  $           1.4  $           1.5  $           1.0
                                     ===============  ===============  ===============  ===============
</TABLE>







                                       8
<PAGE>   11


                                   SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the Registrant has duly caused this Annual Report to be signed on
its behalf by the undersigned, thereunto duly authorized.

Trinity Industries, Inc.                      By /s/ Michael G. Fortado
- ------------------------                        -------------------------------
Registrant                                       Michael G. Fortado
                                                 Vice President,
                                                 General Counsel, and
                                                 Secretary
                                                 June 25, 1999

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following persons of the Registrant and in the
capacities and on the dates indicated:

Directors:                                      Directors (continued)

/s/ David W. Biegler                            /s/ Diana Natalicio
- ----------------------------                    ------------------------------
David W. Biegler                                Diana Natalicio
Director                                        Director
June 25, 1999                                   June 25, 1999


/s/ Barry J. Galt                               /s/ W. Ray Wallace
- ----------------------------                    ------------------------------
Barry J. Galt                                   W. Ray Wallace
Director                                        Director
June 25, 1999                                   June 25, 1999


/s/ Clifford J. Grum
- ----------------------------
Clifford J. Grum                                Principal Executive Officer:
Director
June 25, 1999                                   /s/ Timothy R. Wallace
                                                ----------------------
                                                Timothy R. Wallace
/s/ Dean P. Guerin                              Chairman
- ----------------------------                    June 25, 1999
Dean P. Guerin
Director
June 25, 1999
                                                Principal Financial Officer:

/s/ Jess T. Hay                                 /s/ Jim S. Ivy
- ----------------------------                    ------------------------------
Jess T. Hay                                     Jim S. Ivy
Director                                        Vice President
June 25, 1999                                   June 25, 1999

                                                Principal Accounting Officer:

                                                /s/ John M. Lee
- ----------------------------                    ------------------------------
Edmund M. Hoffman                               John M. Lee
Director                                        Vice President
June 25, 1999                                   June 25, 1999







                                      9
<PAGE>   12

                            Trinity Industries, Inc.
                                Index to Exhibits
                                  (Item 14(a))

<TABLE>
<CAPTION>

 NO.                              DESCRIPTION
- -----     ------------------------------------------------------------------------

<S>       <C>                                                                                       <C>
(3.1)     Certificate of Incorporation of Registrant (incorporated by reference to
          Exhibit 3.A to Registration Statement No. 33-10937 filed April 8, 1987).                  *

(3.2)     By-Laws of Registrant

(4.1)     Specimen Common Stock Certificate of Registrant

(4.2)     Rights Agreement dated March 31, 1999 (incorporated by reference to
          Form 8-K filed March 31, 1999).                                                           *

(10.1)    Fixed Charges Coverage Agreement dated as of January 15, 1980, between
          Registrant and Trinity Industries Leasing Company (incorporated by
          reference to Exhibit 10.1 to Registration Statement No. 2-70378 filed
          January 29, 1981).                                                                        *

(10.2)    Tax Allocation Agreement dated as of January 22, 1980 between Registrant
          and its subsidiaries (including Trinity Industries Leasing Company)
          (incorporated by reference to Exhibit 10.2 to Registration Statement
          No. 2-70378 filed January 29, 1981).                                                      *

(10.3)    Form of Executive Severance Agreement, as amended, entered into between
          the Registrant and executive officers of the Registrant. **

(10.4)    Trinity Industries, Inc., Stock Option Plan With Stock Appreciation Rights
          (incorporated by reference to Registration Statement No. 2-64813 filed
          July 5, 1979, as amended by Post-Effective Amendment No. 1 dated July 1, 1980,
          Post-Effective Amendment No.2 dated August 31, 1984, and Post-Effective
          Amendment No. 3 dated July 13, 1990).  **                                                 *

(10.5)    Directors' Retirement Plan adopted December 11, 1986, as amended by
          Amendment No. 1 dated September 10, 1998.  **

(10.6)    1989 Stock Option Plan with Stock Appreciation Rights (incorporated by
          reference to Registration Statement No. 33-35514 filed June 20, 1990).  **                *

(10.7)    Supplemental Retirement Benefit Plan for W. Ray Wallace, effective
          July 18, 1990, as amended by Amendment No. 1 dated September 14,
          1995, Amendment No. 2 dated May 6, 1997, and Amendment No. 3
          dated September 10, 1998.  **

(10.8)    1993 Stock Option and Incentive Plan (incorporated by reference to
          Registration Statement No. 33-73026 filed December 15, 1993)  **                          *
</TABLE>




                                       10
<PAGE>   13


                            Trinity Industries, Inc.
                        Index to Exhibits -- (Continued)
                                  (Item 14(a))

<TABLE>
<CAPTION>

 NO.                              DESCRIPTION
- -----     ------------------------------------------------------------------------

<S>       <C>                                                                                       <C>
(10.9)    Supplemental Profit Sharing Plan for Employees of Trinity Industries Inc.
          and Certain Affiliates dated July 1, 1990, as amended by Amendment
          No. 1 dated August 9, 1991, Amendment No. 2 dated May 18, 1992,
          Amendment No. 3 dated December 6, 1994, Amendment No. 4 dated
          January 13, 1997, Amendment No. 5 dated May 6, 1997, Amendment
          No. 6 dated April 1, 1999, and Amendment No. 7 dated April 1, 1999.  **

(10.10)   Supplemental Profit Sharing and Deferred Director Fee Trust dated
          March 31, 1999.  **

(10.11)   Supplemental Retirement Plan dated April 1, 1995, as amended by
          Amendment No. 1 dated September 14, 1995 and Amendment No. 2
          dated May 6, 1997.  **

(10.12)   Deferred Plan for Director Fees dated July 17, 1996, as amended by
          Amendment No. 1 dated September 10, 1998.  **

(10.13)   Trinity Industries, Inc. 1998 Stock Option and Incentive Plan (incorporated
          by reference to Registration Statement No. 333-77735 filed May 4, 1999).      **          *

(10.14)   Form of Deferred Compensation Plan and Agreement entered into between
          Trinity Industries, Inc. and certain officers of the Registrant.  **

(13)      Annual Report to Stockholders. With the exception of the information
          incorporated by reference into Items 1, 3, 5, 6, 7 and 8 of Form 10-K,
          the 1999 Annual Report to Stockholders is not deemed a part of this
          report.

(21)      Listing of subsidiaries of the Registrant.

(23)      Consent of Independent Auditors.

(27)      Financial Data Schedules for the fiscal year ended March 31, 1999.

(99.1)    Annual Report on Form 11-K for employee stock purchase, savings and
          similar plans filed pursuant to Rule 15d-21.
</TABLE>


*  Incorporated herein by reference from previous filings with the Securities
   and Exchange Commission.

** Management contracts and compensatory plan arrangements.

NOTICE: Exhibits 10.3, 10.5, 10.7, 10.9, 10.10, 10.11, 10.12, 10.14, 13, 27, and
99.1 have been omitted from the reproduction of this Form 10-K. A copy of the
Exhibits will be furnished upon written request to Michael E. Conley, Director
of Investor Relations, Trinity Industries, Inc., P.O. Box 568887, Dallas, Texas
75356-8887. The Registrant may impose a reasonable fee for its expenses in
connection with providing the above-referenced Exhibits.




                                       11

<PAGE>   1

                                                                     EXHIBIT 3.2

                                              As Amended Effective June 10, 1999


                                     BYLAWS

                                       OF

                            TRINITY INDUSTRIES, INC.



                                   ARTICLE I.

                                     Offices

         Section 1. The registered office shall be located in the City of
Wilmington, County of New Castle, State of Delaware.

         Section 2. The corporation may also have offices at such other places
within or without the State of Delaware as the Board of Directors may from time
to time determine, or as the business of the corporation may require.

                                   ARTICLE II.

                            Meetings of Stockholders

         Section 1. Meetings of the stockholders for any purpose shall be held
at such time and place, either within or without the State of Delaware, as shall
be designated from time to time by the Board of Directors and stated in the
notice of the meeting or in a duly executed waiver of notice thereof.

         Section 2. The annual meeting of stockholders shall be held on such
date and at such time as shall be designated from time to time by the Board of
Directors and stated in the notice of the meeting. At such meeting, the
stockholders entitled to vote thereat shall elect by a plurality vote a Board of
Directors.



<PAGE>   2

Nominations for election to the Board of Directors shall be made at such meeting
only by or at the direction of the Board of Directors, by a nominating committee
or person appointed by the Board of Directors, or by a stockholder of the
corporation entitled to vote for the election of directors at the meeting who
complies with the notice procedures set forth in this Section 2. Such
nominations, other than those made by or at the direction of the Board of
Directors, shall be made pursuant to timely notice in writing to the Secretary
of the corporation. To be timely, a stockholder's notice shall be delivered to,
or mailed and received at, the principal executive offices of the corporation
not less than sixty days nor more than ninety days prior to the anniversary date
of the immediately preceding annual meeting of stockholders; provided, however,
that in the event that the annual meeting is called for a date that is not
within thirty days before or after such anniversary date, notice by the
stockholder in order to be timely must be so received not later than the close
of business on the tenth day following the day on which such notice of the date
of the annual meeting was mailed or public disclosure of the date of the annual
meeting was made, whichever first occurs. Such stockholder's notice to the
Secretary shall set forth (a) as to each person whom the stockholder proposes to
nominate for election or re-election as a director, (i) the name, age, business
address and residence address of the person, (ii) the principal occupation or
employment of the person, (iii) the class and number of shares



                                       2
<PAGE>   3

of capital stock of the corporation which are beneficially owned by the person,
and (iv) any other information relating to the person that is required to be
disclosed in solicitations for proxies for election of directors pursuant to
Regulation 14A under the Securities Exchange Act of 1934, as amended; and (b) as
to the stockholder giving the notice, (i) the name and record address of the
stockholder, (ii) the class and number of shares of capital stock of the
corporation which are beneficially owned by the stockholder, (iii) a description
of all arrangements or understandings between such stockholder and each proposed
nominee and any other person or persons (including their names) pursuant to
which the nomination(s) are to be made by such stockholder, (iv) a
representation that such stockholder intends to appear in person or by proxy at
the meeting to nominate the persons named in its notice and (v) any other
information relating to such stockholder that would be required to be disclosed
in a proxy statement or other filings required to be made in connection with
solicitations of proxies for election of directors pursuant to Section 14 of the
Exchange Act and the rules and regulations promulgated thereunder. The
corporation may require any proposed nominee to furnish such other information
as may reasonably be required by the corporation to determine the eligibility of
such proposed nominee to serve as director of the corporation. No person shall
be eligible for election as a director of the


                                       3
<PAGE>   4

corporation unless nominated in accordance with the procedures set forth herein.

         The Chairman of the meeting shall, if the facts warrant, determine and
declare to the meeting that a nomination was not made in accordance with the
foregoing procedure, and if he should so determine, he shall so declare to the
meeting and the defective nomination shall be disregarded.

         At each annual meeting of the stockholders, only such business shall be
conducted as shall have properly been brought before the meeting. To be properly
before the meeting, the business to be conducted must be specified in the notice
of meeting (or any supplement thereto) given by or at the direction of the Board
of Directors, otherwise properly brought before the meeting by or at the
direction of the Board of Directors, or otherwise properly brought before the
meeting by a stockholder entitled to vote at the meeting. In addition to any
other applicable requirements, for business to be properly brought before the
meeting by a stockholder, the stockholder must have given timely notice thereof
in writing to the Secretary of the corporation. To be timely, a stockholder's
notice shall be delivered to, or mailed and received at, the principal executive
offices of the corporation not less than sixty days nor more than ninety days
prior to the anniversary date of the immediately preceding annual meeting of
stockholders; provided, however, that in the event that the annual meeting is
called for a date that is



                                       4
<PAGE>   5

not within thirty days before or after such anniversary date, notice by the
stockholder in order to be timely must be so received not later than the close
of business on the tenth day following the day on which such notice of the date
of the annual meeting was mailed or such public disclosure of the date of the
annual meeting was made, whichever first occurs. A stockholder's notice to the
Secretary of the corporation shall set forth as to each matter that the
stockholder proposes to bring before the annual meeting, (i) a brief description
of the business desired to be brought before the annual meeting and the reasons
for conducting such business at the annual meeting, (ii) the name and record
address of the stockholder proposing such business, (iii) the class and number
of shares of the corporation which are beneficially owned by the stockholder,
(iv) a description of all arrangements or understandings between such
stockholder and any other person or persons (including their names) in
connection with the proposal of such business by such stockholder and any
material interest of such stockholder in such business and (v) a representation
that such stockholder intends to appear in person or by proxy at the annual
meeting to bring the foregoing provisions of this Section 2, a stockholder
seeking to have a proposal included in the corporation's proxy statement shall
comply with the requirements of Regulation 14A under the Securities Exchange Act
of 1934, as amended (including, but not limited to, Rule 14a-8 or its successor
provision).



                                       5
<PAGE>   6

         Notwithstanding anything in these By-Laws to the contrary, no business
shall be conducted at the annual meeting except in accordance with the
procedures set forth in this Section 2; provided, however, that nothing in this
Section 2 shall be deemed to preclude discussion by any stockholder of any
business properly brought before the annual meeting in accordance with the
procedures set forth in this Section 2.

         The Chairman of the meeting shall, if the facts warrant, determine and
declare to the meeting that the business sought to be so conducted was not
properly brought before the meeting in accordance with the provisions of this
Section 2, and if he should so determine, he shall so declare to the meeting and
any such business not properly brought before the meeting shall not be
transacted.

         Section 3. Special meetings of the stockholders may be called by the
chief executive officer or a majority of the Board of Directors.

         Section 4. Written or printed notice stating the place, day and hour of
the meeting and, in the case of a special meeting, the purpose or purposes for
which the meeting is called, shall be given not less than ten (10) nor more than
sixty (60) days before the date of the meeting, either personally or by mail, by
or at the direction of the President, the Secretary, or the officer or person
calling the meeting, to each stockholder of record entitled to vote at such
meeting.



                                       6
<PAGE>   7

         Section 5. Business transacted at any special meeting shall be confined
to the purposes stated in the notice thereof.

         Section 6. The holders of a majority of the shares entitled to vote,
represented in person or by proxy, shall constitute a quorum at meetings of
stockholders except as otherwise provided by any applicable statute. If,
however, a quorum shall not be present or represented at any meeting of the
stockholders, the presiding officer at the meeting or the stockholders present
in person or represented by proxy, shall have the power to adjourn the meeting
from time to time, without notice other than announcement at the meeting, until
a quorum shall be present or represented. At such adjourned meeting at which a
quorum shall be present or represented, any business may be transacted which
might have been transacted at the meeting as originally notified. In addition,
the presiding officer at any meeting of stockholders shall have the power to
adjourn the meeting at the request of the Board of Directors if the Board of
Directors determines that adjournment is necessary or appropriate to enable
stockholders to consider fully information which the Board of Directors
determines has not been made sufficiently or timely available to stockholders or
to otherwise exercise effectively their voting rights.

         Section 7. Except as provided in Section 2 hereof with respect to the
election of the Board of Directors, at a meeting at which a quorum is present,
the vote of the holders of a majority of the shares present in person or
represented by proxy at the



                                       7
<PAGE>   8

meeting and entitled to vote shall be the act of the stockholders' meeting,
unless the vote of a greater number is required by law or the Certificate of
Incorporation.

         Section 8. Each outstanding share, regardless of class, shall be
entitled to one vote on each matter submitted to a vote at a meeting of
stockholders, except to the extent that the voting rights of the shares of any
class are limited or denied by the Certificate of Incorporation.

         Section 9. At any meeting of the stockholders, every stockholder having
the right to vote may vote either in person, or by proxy appointed by an
instrument in writing as to a particular meeting and any adjournment or
adjournments thereof subscribed by such stockholder or by his duly authorized
attorney-in-fact. A proxy shall be revocable unless expressly provided therein
to be irrevocable and unless otherwise provided by law.

         Section 10. The officer or agent having charge of the stock transfer
books shall make, at least ten (10) days before each meeting of stockholders, a
complete list of the stockholders entitled to vote at such meeting or any
adjournment thereof, arranged in alphabetical order, with the address of and
number of shares held by each, which list, for a period of ten (10) days prior
to such meeting, shall be kept on file at the registered office of the
corporation, and shall be subject to inspection by any stockholder at any time
during usual business hours. Such list shall also be produced and kept open at
the time and place of



                                       8
<PAGE>   9

the meeting, and shall be subject to the inspection of any stockholder during
the whole time of the meeting. The original stock transfer books shall be prima
facie evidence as to who are the stockholders entitled to examine such list or
transfer book or to vote at any such meeting of stockholders.

         Section 11. Notwithstanding any inconsistent provision which may be
contained in these By-Laws, in order that the corporation may determine the
stockholders entitled to consent to corporate action in writing without a
meeting, the Board of Directors may fix a record date, which record date shall
not precede the date on which the resolution fixing the record date is adopted
by the Board of Directors, and which date shall not be more than ten days after
the date upon which the resolution fixing the record date is adopted by the
Board of Directors. Any stockholder of record seeking to have the stockholders
authorize or take corporate action by written consent shall, by written notice
to the Secretary, request the Board of Directors to fix a record date. The Board
of Directors shall promptly, but in all events within ten days after the date on
which such a request is received, adopt a resolution fixing the record date. If
no record date has been fixed by the Board of Directors within ten days of the
date upon which such a request is received, the record date for determining
stockholders entitled to consent to corporate action in writing without a
meeting, when no prior action by the Board of Directors is required by
applicable law, shall be the first date on which a



                                       9
<PAGE>   10

signed written consent setting forth the action taken or proposed to be taken is
delivered to the corporation by delivery to its registered office in the State
of Delaware, its principal place of business, or any officer or agent of the
corporation having custody of the book in which proceedings of stockholders'
meeting are recorded, to the attention of the Secretary of the corporation.
Delivery shall be by hand or by certified or registered mail, return receipt
requested. If no record date has been fixed by the Board of Directors and prior
action by the Board of Directors is required by applicable law, the record date
for determining stockholders entitled to consent to corporate action in writing
without a meeting shall be at the close of business on the date on which the
Board of Directors adopts the resolution taking such prior action.

                                  ARTICLE III.

                                    Directors

         Section 1. The number of directors of the corporation shall be nine
(9). The directors shall be elected at the annual meeting of the stockholders,
except as provided in Section 2 of this Article, and each director elected shall
hold office until his successor is elected and qualified; provided, any director
may be removed at any time, with or without cause, by the holders of a majority
of the shares entitled to vote, represented in person or by proxy, at any duly
constituted meeting of stockholders called for the purpose of removing any such
director or directors.


                                       10
<PAGE>   11

Directors need not be residents of the State of Delaware or stockholders of the
corporation.

         Section 2. Any vacancy occurring in the Board of Directors may be
filled by the affirmative vote of a majority of the remaining directors though
less than a quorum of the Board of Directors. A director elected to fill a
vacancy shall be elected for the unexpired term of his predecessor in office.
Any newly created directorship(s) resulting from an increase in the authorized
number of directors elected by all stockholders entitled to vote as a single
class shall be filled by the affirmative vote of a majority of the remaining
directors, even though less than a quorum of the proposed Board of Directors.

         Section 3. The business and affairs of the corporation shall be managed
by its Board of Directors which may exercise all such powers of the corporation
and do all such lawful acts and things as are not by statute, the Certificate of
Incorporation, or these Bylaws directed or required to be exercised and done by
the stockholders.

         Section 4. Meetings of the Board of Directors, regular or special, may
be held either within or without the State of Delaware.

         Section 5. The first meeting of each newly elected Board of Directors
shall be held at such time and place as shall be fixed by the vote of the
stockholders at the annual meeting, and no notice of such meeting shall be
necessary to the newly elected



                                       11
<PAGE>   12

directors in order legally to constitute the meeting, provided a quorum shall be
present. In the event of the failure of the stockholders to fix the time and
place of such first meeting of the newly elected Board of Directors, or in the
event such meeting is not held at the time and place so fixed by the
stockholders, the meeting may be held at such time and place as shall be
specified in a notice given as hereinafter provided for special meetings of the
Board of Directors, or as shall be specified in a written waiver signed by all
of the directors.

         Section 6. Regular meetings of the Board of Directors may be held at
such time and at such place as shall from time to time be determined by the
Board. Special meetings of the Board of Directors may be called by the Secretary
on the written request of two directors.

         Section 7. Written notice of regular meetings of the Board of Directors
shall not be required. Special meetings of the Board of Directors may be called
upon twenty-four (24) hours' notice to each director, or such shorter period of
time as the person calling the meeting deems appropriate in the circumstances,
either personally or by mail, telephone or telegram. Neither the business to be
transacted at, nor the purposes of, any special meeting of the Board of
Directors need be specified in the notice or waiver of notice of such special
meeting.

         Section 8. A majority of the directors shall constitute a quorum for
the transaction of business, and the act of the



                                       12
<PAGE>   13

majority of the directors present at a meeting at which a quorum is present
shall be the act of the Board of Directors, unless a greater number is required
by the Certificate of Incorporation. If a quorum shall not be present at any
meeting of the Board of Directors, the directors present thereat may adjourn the
meeting from time to time, without notice other than announcement at the
meeting, until a quorum shall be present.

         Section 9. The Board of Directors, by resolution adopted by a majority
of the whole Board, may designate three or more directors to constitute an
executive committee, which committee, unless its authority shall be otherwise
expressly limited by such resolution, shall have and may exercise all of the
authority of the Board of Directors in the business and affairs of the
corporation except where action of the Board of Directors is specified by
statute. Vacancies in the membership of the committee shall be filled by the
Board of Directors at a regular or special meeting of the Board of Directors.
The executive committee shall keep regular minutes of its proceedings and report
the same to the Board when required. The designation of such committee and the
delegation thereto of authority shall not operate to relieve the Board of
Directors, or any member thereof, of any responsibility imposed upon it or him
by law.



                                       13
<PAGE>   14

                                   ARTICLE IV.

                                     Notices

         Section 1. Except as otherwise provided in these Bylaws, notices to
directors and stockholders shall be in writing, and delivered personally or
mailed to the directors or stockholders at their addresses appearing on the
books of the corporation. If mailed, such notice shall be deemed to be given
when deposited in the United States mail with postage thereon prepaid. Notice to
directors may also be given by telegram.

         Section 2. Whenever any notice is required to be given to any
stockholder or director under the provisions of the statutes, the Certificate of
Incorporation or these Bylaws, a waiver thereof in writing, signed by the person
or persons entitled to such notice, whether before or after the time stated
therein, shall be equivalent to the giving of such notice.

         Section 3. Attendance of a director at a meeting shall constitute a
waiver of notice of such meeting, except where a director attends a meeting for
the express purpose of objecting to the transaction of any business on the
ground that the meeting is not lawfully called or convened.

                                   ARTICLE V.

                                    Officers

         Section 1. The executive officers of the corporation shall consist of a
President, one or more Vice Presidents, a Secretary and a Treasurer and may
include a Chairman of the Board, one or more Senior Vice Presidents and one or
more Executive Vice



                                       14
<PAGE>   15

Presidents, each of whom shall be elected by the Board of Directors.

         Section 2. The Board of Directors, at its first meeting after each
annual meeting of stockholders, shall choose a President, one or more Vice
Presidents, a Secretary and a Treasurer, none of whom need be a member of the
Board, and may appoint one of their number Chairman of the Board.

         Section 3. Such other officers and assistant officers and agents as may
be deemed necessary may be appointed by the chief executive officer of the
corporation, including a Chairman, a President, and one or more Vice Presidents
of the respective Divisions. The President or the Vice Presidents of the
Division who, in the order of their seniority, unless otherwise determined by
the chief executive officer of the corporation, shall perform the duties of the
Chairman or President, as the case may be, of the Division in the absence or
disability of the Chairman or President, as the case may be, of that Division.
Each President or Vice President, as the case may be, of a Division shall
perform such other duties and have such other powers as the chief executive
officer of the corporation or the Chairman or President, as the case may be, of
that Division shall prescribe. Division officers shall hold office until their
respective successors shall have been chosen and shall have qualified. Any
Division officer appointed by the chief executive officer may be removed by the
chief executive officer whenever, in his judgment, the best



                                       15
<PAGE>   16

interests of the corporation will be served thereby. Any vacancy occurring in
any office of a Division by death, resignation, removal or otherwise shall be
filled by the chief executive officer of the corporation.

         Section 4. The salaries of all executive officers of the corporation
shall be fixed by the Board of Directors or by a committee of one or more
directors, the members of which shall be selected by the Board of Directors and
which, unless its authority shall be otherwise limited by resolution of the
Board of Directors, shall have the power to fix the salaries of all executive
officers of the corporation.

         Section 5. The executive officers of the corporation shall hold office
until their respective successors shall have been chosen and shall have
qualified. Any officer or agent or member of the executive committee elected or
appointed by the Board of Directors may be removed by the Board of Directors
whenever, in its judgment, the best interests of the corporation will be served
thereby, but such removal shall be without prejudice to the contract rights, if
any, of the person so removed. Any vacancy occurring in any executive office of
the corporation by death, resignation, removal or otherwise shall be filled by
the Board of Directors.

         Section 6. The Board of Directors may designate whether the Chairman of
the Board, if such an officer shall have been appointed, or the President, shall
be the chief executive officer



                                       16
<PAGE>   17

of the corporation. The officer so designated as the chief executive officer
shall preside at all meetings of the stockholders and the Board of Directors,
and shall have such other powers and duties as usually pertain to such office or
as may be delegated by the Board of Directors. The President shall have such
powers and duties as usually pertain to such office, except as the same may be
modified by the Board of Directors. Unless the Board of Directors shall
otherwise delegate such duties, the chief executive officer shall have general
and active management of the business of the corporation and shall see that all
orders and resolutions of the Board of Directors are carried into effect.

         Section 7. The chief executive officer or his designee shall have the
authority to execute bonds, mortgages and other contracts requiring a seal,
under the seal of the corporation, except where required or permitted by law to
be otherwise signed and executed, and except where the signing and execution
thereof shall be expressly delegated by the Board of Directors to some other
officer or agent of the corporation.

         Section 8. The Vice Presidents, in the order of their seniority, unless
otherwise determined by the Board of Directors, shall, in the absence or
disability of the President, perform the duties and exercise the powers of the
President. The Vice Presidents shall also have the authority to execute bonds,
mortgages and other contracts requiring a seal, under the seal of



                                       17
<PAGE>   18

the corporation, except where required or permitted by law to be otherwise
signed and executed, and except where the signing and execution thereof shall be
expressly delegated by the Board of Directors to some other officer or agent of
the corporation. The Vice Presidents shall perform such other duties and have
such other powers as the Board of Directors or the chief executive officer of
the corporation shall prescribe.

         Section 9. The Secretary shall attend all meetings of the Board of
Directors and all meetings of the stockholders and shall record all the
proceedings of the meetings of the stockholders and of the Board of Directors in
a book to be kept for that purpose and shall perform like duties for the
standing committees, when requested. He shall give, or cause to be given, notice
of all meetings of the stockholders and special meetings of the Board of
Directors and shall perform such other duties as may be prescribed by the Board
of Directors or the President, under whose supervision he shall be. He shall
keep in safe custody the seal of the corporation, and, when authorized by the
Board of Directors or directed by the President or any Vice President, affix the
same to any instrument requiring it and, when so affixed, it shall be attested
by his signature or by the signature of the Treasurer or any Assistant
Secretary.

         Section 10. The Assistant Secretaries, in the order of their seniority,
unless otherwise determined by the Board of Directors, shall, in the absence or
disability of the Secretary, perform the



                                       18
<PAGE>   19

duties and exercise the powers of the Secretary. They shall perform such other
duties and have such other powers as the Board of Directors may from time to
time prescribe.

         Section 11. The Treasurer shall be the financial officer of the
corporation. He shall have the custody of the corporate funds and securities and
shall deposit all monies and other valuable effects in the name and to the
credit of the corporation in such depositaries as may be designated from time to
time by the Board of Directors. He shall disburse the funds of the corporation
as may be ordered by the Board of Directors, taking proper vouchers for such
disbursements, and shall render to the President and the Board of Directors at
its regular meetings, or when the Board of Directors so requires, an account of
all his transactions as Treasurer. He shall also perform such other duties as
may be assigned to him by the Board of Directors.

         Section 12. If required by the Board of Directors, the Treasurer shall
give the corporation a bond in such sum and with such surety or sureties as
shall be satisfactory to the Board of Directors for the faithful performance of
the duties of his office and for the restoration to the corporation, in case of
his death, resignation, retirement or removal from office, of all books, papers,
vouchers, money and other property of whatever kind in his possession or under
his control belonging to the corporation.

         Section 13. The Assistant Treasurers, in the order of their seniority,
unless otherwise determined by the Board of Directors,



                                       19
<PAGE>   20

shall, in the absence or disability of the Treasurer, perform the duties and
exercise the powers of the Treasurer. They shall perform such other duties and
have such other powers as the Board of Directors may from time to time
prescribe.

                                   ARTICLE VI.

                    Indemnification of Directors and Officers

         Section 1. The corporation shall indemnify any person who was or is a
party or is threatened to be made a party to any threatened, pending or
completed action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of the corporation) by
reason of the fact that he is or was or has agreed to become a director, officer
or Division officer of the corporation, or is or was serving or has agreed to
serve at the request of the corporation as a director, officer or Division
officer of another corporation, partnership, joint venture, trust or other
enterprise, or by reason of any action alleged to have been taken or omitted in
such capacity, against costs, charges, expenses (including attorneys' fees),
judgments, fines and amounts paid in settlement actually and reasonably incurred
by him or on his behalf in connection with such action, suit or proceeding and
any appeal therefrom, if he acted in good faith and in a manner he reasonably
believed to be in or not opposed to the best interests of the corporation, and,
with respect to any criminal action or proceeding, had no reasonable cause to
believe his conduct was unlawful. The



                                       20
<PAGE>   21

termination of any action, suit or proceeding by judgment, order, settlement,
conviction, or upon a plea of nolo contendere or its equivalent, shall not, of
itself, create a presumption that the person did not act in good faith and in a
manner which he reasonably believed to be in or not opposed to the best
interests of the corporation, and, with respect to any criminal action or
proceeding, had reasonable cause to believe that his conduct was unlawful.

         Section 2. The corporation shall indemnify any person who was or is a
party or is threatened to be made a party to any threatened, pending or
completed action or suit by or in the right of the corporation to procure a
judgment in its favor by reason of the fact that he is or was or has agreed to
become a director, officer or Division officer of the corporation, or is or was
serving or has agreed to serve at the request of the corporation as a director,
officer or Division officer of another corporation, partnership, joint venture,
trust or other enterprise, or by reason of any action alleged to have been taken
or omitted in such capacity, against costs, charges and expenses (including
attorneys' fees) actually and reasonably incurred by him or on his behalf in
connection with the defense or settlement of such action or suit and any appeal
therefrom, if he acted in good faith and in a manner he reasonably believed to
be in or not opposed to the best interests of the corporation except that no
indemnification shall be made in respect of any claim, issue or matter as to
which



                                       21
<PAGE>   22

such person shall have been adjudged to be liable to the corporation unless and
only to the extent that the Court of Chancery of Delaware or the court in which
such action or suit was brought shall determine upon application that, despite
the adjudication of such liability but in view of all the circumstances of the
case, such person is fairly and reasonably entitled to indemnity for such costs,
charges and expenses which the Court of Chancery or such other court shall deem
proper.

         Section 3. Notwithstanding the other provisions of this Article, to the
extent that a director, officer or Division officer of the corporation has been
successful on the merits or otherwise, including, without limitation, the
dismissal of an action without prejudice, in defense of any action, suit or
proceeding referred to in Sections 1 and 2 of this Article, or in defense of any
claim, issue or matter therein, he shall be indemnified against all costs,
charges and expenses (including attorneys' fees) actually and reasonably
incurred by him or on his behalf in connection therewith.

         Section 4. Any indemnification under Sections 1 and 2 of this Article
(unless ordered by a court) shall be paid by the corporation unless a
determination is made (1) by the Board of Directors by a majority vote of a
quorum consisting of directors who were not parties to such action, suit or
proceeding, or (2) if such a quorum is not obtainable, or, even if obtainable a
quorum of disinterested directors so directs, by independent legal



                                       22
<PAGE>   23

counsel in a written opinion, or (3) by the stockholders, that indemnification
of the director, officer, employee or agent is not proper in the circumstances
because he has not met the applicable standard of conduct set forth in Sections
1 and 2 of this Article.

         Section 5. Costs, charges and expenses (including attorneys' fees)
incurred by a person referred to in Sections 1 and 2 of this Article in
defending a civil or criminal action, suit or proceeding shall be paid by the
corporation in advance of the final disposition of such action, suit or
proceeding; provided, however, that the payment of such costs, charges and
expenses incurred by a director, officer or Division officer in his capacity as
a director, officer or Division officer (and not in any other capacity in which
service was or is rendered by such person while a director, officer or Division
officer) in advance of the final disposition of such action, suit or proceeding
shall be made only upon receipt of an undertaking by or on behalf of the
director, officer or Division officer to repay all amounts so advanced in the
event that it shall ultimately be determined that such director, officer or
Division officer is not entitled to be indemnified by the corporation as
authorized in this Article. The Board of Directors may, in the manner set forth
above, and upon approval of such director, officer or Division officer of the
corporation, authorize the corporation's counsel to represent such


                                       23
<PAGE>   24

person, in any action, suit or proceeding, whether or not the corporation is a
party to such action, suit or proceeding.

         Section 6. Any indemnification under Sections 1, 2 and 3, or advance of
costs, charges and expenses under Section 5 of this Article, shall be made
promptly, and in any event within 60 days, upon the written request of the
director, officer or Division officer. The right to indemnification or advances
as granted by this Article shall be enforceable by the director, officer or
Division officer in any court of competent jurisdiction, if the corporation
denies such request, in whole or in part, or if no disposition thereof is made
within 60 days. Such persons' costs and expenses incurred in connection with
successfully establishing his right to indemnification, in whole or in part, in
any such action shall also be indemnified by the corporation. It shall be a
defense to any such action (other than an action brought to enforce a claim for
the advance of costs, charges and expenses under Section 5 of this Article where
the required undertaking, if any, has been received by the corporation) that the
claimant has not met the standard of conduct set forth in Sections 1 or 2 of
this Article, but the burden of proving such defense shall be on the
corporation. Neither the failure of the corporation (including its Board of
Directors, its independent legal counsel, and its stockholders) to have made a
determination prior to the commencement of such action that indemnification of
the claimant is proper in the circumstances because he has met the applicable



                                       24
<PAGE>   25

standard of conduct set forth in Sections 1 or 2 of this Article, nor the fact
that there has been an actual determination by the corporation (including its
Board of Directors, its independent legal counsel, and its stockholders) that
the claimant has not met such applicable standard of conduct, shall be a defense
to the action or create a presumption that the claimant has not met the
applicable standard of conduct.

         Section 7. The indemnification and advancement of costs, charges and
expenses provided by this Article shall not be deemed exclusive of any other
rights to which a person seeking indemnification or advancement of costs,
charges and expenses may be entitled under any law (common or statutory),
agreement, vote of stockholders or disinterested directors or otherwise, both as
to action in his official capacity and as to action in another capacity while
holding office or while employed by or acting as agent for the corporation, and
shall continue as to a person who has ceased to be a director, officer or
Division officer as to actions taken while he was such a director, officer or
Division officer, and shall inure to the benefit of the estate, heirs, executors
and administrators of such person. All rights to indemnification under this
Article shall be deemed to be a contract between the corporation and each
director, officer or Division officer of the corporation who serves or served in
such capacity at any time while this Article is in effect. Any repeal or
modification of this Article or any repeal or modification of



                                       25
<PAGE>   26

relevant provisions of the Delaware General Corporation Law or any other
applicable laws shall not in any way diminish any rights to indemnification of
such director, officer or Division officer or the obligations of the corporation
arising hereunder.

         Section 8. In addition to the specific indemnification provided for
herein, the corporation shall indemnify each person who is or was or has agreed
to become a director, officer or Division officer of the corporation, or is or
was serving or has agreed to serve at the request of the corporation as a
director, officer or Division officer of another corporation, partnership, joint
venture, trust or other enterprise, to the fullest extent authorized or
permitted (i) by the General Corporation Law of Delaware, or any other
applicable law, or by any amendment thereof or other statutory provisions in
effect on the date hereof, or (ii) by the corporation's Certificate of
Incorporation as in effect on the date hereof. The corporation shall also
advance expenses to any of the foregoing individuals to the fullest extent
authorized or permitted (i) by the General Corporation Law of Delaware, or any
other applicable law, or by any amendment thereof or other statutory provision
in effect on the date hereof, or (ii) by the corporation's Certificate of
Incorporation as in effect on the date hereof.

         Section 9. Notwithstanding the foregoing, the corporation shall have
the power to purchase and maintain insurance on behalf of any person who is or
was or has agreed to become a director,



                                       26
<PAGE>   27

officer or Division officer of the corporation, or is or was serving at the
request of the corporation as a director, officer or Division officer of another
corporation, partnership, joint venture, trust or other enterprise against any
liability asserted against him and incurred by him or on his behalf in any such
capacity, or arising out of his status as such, whether or not the corporation
would have the power to indemnify him against such liability under the
provisions of this Article.

         Section 10. If this Article or any portion hereof shall be invalidated
on any ground by any court of competent jurisdiction, then the corporation shall
nevertheless indemnify each director, officer or Division officer of the
corporation as to costs, charges and expenses (including attorneys' fees),
judgments, fines and amounts paid in settlement with respect to any action, suit
or proceeding, whether civil, criminal, administrative or investigative,
including an action by or in the right of the corporation, to the full extent
permitted by any applicable portion of this Article that shall not have been
invalidated and to the full extent permitted by applicable law.

                                  ARTICLE VII.

                             Certificates for Shares

         Section 1. The corporation shall deliver certificates representing all
shares to which stockholders are entitled; and such certificates shall be signed
by the President or a Vice



                                       27
<PAGE>   28

President, and the Secretary or an Assistant Secretary of the corporation, and
may be sealed with the seal of the corporation or a facsimile thereof. No
certificate shall be issued for any share until the consideration therefor has
been fully paid. Each certificate representing shares shall state upon the face
thereof that the corporation is organized under the laws of the State of
Delaware, the name of the person to whom issued, the number and class and the
designation of the series, if any, which such certificate represents, and the
par value of each share represented by such certificate or a statement that the
shares are without par value.

         Section 2. The signatures of the President or Vice President, and the
Secretary or Assistant Secretary, upon a certificate may be facsimiles if the
certificate is countersigned by a transfer agent, or registered by a registrar,
other than the corporation itself or an employee of the corporation. In case any
officer who has signed or whose facsimile signature has been placed upon such
certificate shall have ceased to be such officer before such certificate is
issued, it may be issued by the corporation with the same effect as if he were
such officer at the date of the issuance.

         Section 3. The Board of Directors may direct a new certificate or
certificates to be issued in place of any certificate or certificates
theretofore issued by the corporation alleged to have been lost or destroyed,
upon the making of an



                                       28
<PAGE>   29

affidavit of that fact by the person claiming the certificate of stock to be
lost or destroyed. When authorizing such issue of a new certificate or
certificates, the Board of Directors may, in its discretion and as a condition
precedent to the issuance thereof, require the owner of such lost or destroyed
certificate or certificates, or his legal representative, to advertise the same
in such manner as it shall require and/or to give the corporation a bond in such
sum as it may direct as indemnity against any claim that may be made against the
corporation with respect to the certificate alleged to have been lost or
destroyed.

         Section 4. Upon surrender to the corporation or the transfer agent of
the corporation of a certificate for shares duly endorsed or accompanied by
proper evidence of succession, assignment or authority to transfer, it shall be
the duty of the corporation to issue a new certificate to the person entitled
thereto, cancel the old certificate, and record the transaction upon its books.

         Section 5. For the purpose of determining stockholders entitled to
notice of or to vote at any meeting of stockholders or any adjournment thereof,
or entitled to receive payment of any dividend, or in order to make a
determination of stockholders for any other proper purpose, the Board of
Directors may provide that the stock transfer books shall be closed for a stated
period but not to exceed, in any case, sixty (60) days. If the stock transfer
books shall be closed for the purpose of determining stockholders entitled to
notice of or to vote at a meeting of


                                       29
<PAGE>   30
stockholders, such books shall be closed for at least ten (10) days immediately
preceding such meeting. In lieu of closing the stock transfer books, the Board
of Directors may fix in advance a date as the record date for any such
determination of stockholders, such date in any case to be not more than sixty
(60) days, and, in case of a meeting of stockholders, not less than ten (10)
days prior to the date on which the particular action requiring such
determination of stockholders is to be taken. If the stock transfer books are
not closed and no record date is fixed for the determination of stockholders
entitled to notice of or to vote at a meeting of stockholders or any adjournment
thereof, or stockholders entitled to receive payment of a dividend, or in order
to make a determination of stockholders for any other proper purpose, the close
of business on the day next preceding the day on which notice of the meeting of
stockholders is given shall be the record date with respect to such meeting, and
the close of business on the day on which the Board of Directors adopts a
resolution declaring a dividend or with respect to any other proper purpose, as
the case may be, shall be the record date for the determination of stockholders
with respect thereto. When a determination of stockholders entitled to vote at
any meeting of stockholders has been made as provided in this section, such
determination shall apply to any adjournment thereof, except where the
determination has been made through the



                                       30
<PAGE>   31

closing of stock transfer books and the stated period of closing has expired.

         Section 6. The corporation shall be entitled to recognize the exclusive
rights of a person registered on its books as the owner of shares to receive
dividends, and to vote as such owner, and shall not be bound to recognize any
equitable or other claim to or interest in such share or shares on the part of
any other person, whether or not it shall have express or other notice thereof,
except as otherwise provided by the laws of the State of Delaware.

                                  ARTICLE VIII.

                               General Provisions

         Section 1. The Board of Directors may declare and the corporation may
pay dividends on its outstanding shares in cash, property, or its own shares
pursuant to law and subject to the provisions of its Certificate of
Incorporation.

         Section 2. The Board of Directors may by resolution create a reserve or
reserves out of earned surplus for any purpose or purposes, and may abolish any
such reserve in the same manner.

         Section 3. The Board of Directors must, when requested by the holders
of at least one-third of the outstanding shares of the corporation, present
written reports of the business and financial affairs of the corporation.

         Section 4. All checks or demands for money and notes of the corporation
shall be signed by such officer or officers or such


                                       31
<PAGE>   32

other person or persons as the Board of Directors may from time to time
designate as provided in these bylaws.

         Section 5. The fiscal year of the corporation shall be fixed by
resolution of the Board of Directors.

         Section 6. The corporate seal shall have inscribed thereon the name of
the corporation and may be used by causing it or a facsimile thereof to be
impressed or affixed or in any other manner reproduced.

                                   ARTICLE IX.

                                   Amendments

         These Bylaws may be altered, amended or repealed at any regular or
special meeting of, or by the unanimous written consent of, the Board of
Directors.



                                       32


<PAGE>   1
<TABLE>
<S>                               <C>                                                                             <C>

         [NUMBER]                                              [GRAPHIC]                                              [SHARES]

     DX

THIS CERTIFICATE IS TRANSFERABLE IN                                                                               CUSIP 896522 10 9
     NEW YORK, NEW YORK                                                                                      SEE REVERSE FOR CERTAIN
                                                                                                                   DEFINITIONS
                                          INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
      COMMON STOCK                                                                                                COMMON STOCK
     $1.00 PAR VALUE                                     TRINITY INDUSTRIES, INC.                                $1.00 PAR VALUE

               This Certifies that





               is the owner of


                                          SHARES OF FULLY PAID AND NON-ASSESSABLE COMMON STOCK OF


Trinity Industries, Inc. transferable on the books of the Corporation by the holder hereof in person or by duly authorized
attorney, upon surrender of this certificate properly endorsed.  This certificate is not valid until countersigned by the Transfer
Agent and registered by the Registrar.

        Witness the seal of the Corporation and the facsimile signatures of its duly authorized officers.


                                                                                 DATE

                                                                                 COUNTERSIGNED AND REGISTERED:

                        /s/ TIMOTHY R. WALLACE                                             THE BANK OF NEW YORK
                                            PRESIDENT                                                              TRANSFER AGENT
                                                                                                                   AND REGISTRAR.
[TRINITY INDUSTRIES
     INC. LOGO]                                             [SEAL]
                                                                                 BY
                        /s/ [ILLEGIBLE]
                                            SECRETARY                                                        AUTHORIZED SIGNATURE
</TABLE>
<PAGE>   2

                            TRINITY INDUSTRIES, INC.

        Trinity Industries, Inc. will furnish without charge to each stockholder
who so requests a statement of the powers, designations, preferences and
relative, participating, optional or other special rights of each class of stock
or series thereof which Trinity Industries, Inc. is authorized to issue and the
qualifications, limitations or restrictions of such preferences and/or rights.

        The following abbreviations, when used in the inscription on the face
of this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:


<TABLE>
        <S>                                             <C>
        TEN COM -- as tenants in common                 UNIF GIFT MIN ACT -                Custodian
                                                                             -------------           -----------
        TEN ENT -- as tenants by the entireties                                 (Cust)                  (Minor)
        JT TEN  -- as joint tenants with right of                            under Uniform Gifts to Minors
                   survivorship and not as tenants                           Act
                                                                                 -----------------
                   in common                                                           (State)
</TABLE>

     Additional abbreviations may also be used though not in the above list.


     For value received,                    hereby sell, assign and transfer
                         ------------------
unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
   IDENTIFYING NUMBER OF ASSIGNEE
[                                    ]
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING POSTAL ZIP CODE OF ASSIGNEE

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

                                                                         Shares
- ------------------------------------------------------------------------
of the capital stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint
                                   -------------------------------------------

Attorney to transfer the said stock on the books of the within-named
Company with full power of substitution in the premises.

Dated,
      -------------------

                                     X
                                      --------------------------------------
                                                    (SIGNATURE)
                NOTICE:

      THE SIGNATURE(S) TO THIS
      ASSIGNMENT MUST CORRESPOND
      WITH THE NAME(S) AS WRITTEN
      UPON THE FACE OF THE
      CERTIFICATE IN EVERY
      PARTICULAR WITHOUT
      ALTERATION OR ENLARGEMENT
      OR ANY CHANGE WHATEVER.

                                     X
                                        ------------------------------------
                                                    (SIGNATURE)

                                     ----------------------------------------
                                     THE SIGNATURE(S) SHOULD BE GUARANTEED BY
                                     AN ELIGIBLE GUARANTOR INSTITUTION
                                     (BANKS, STOCKBROKERS, SAVINGS AND LOAN
                                     ASSOCIATIONS AND CREDIT UNIONS WITH
                                     MEMBERSHIP IN AN APPROVED SIGNATURE
                                     GUARANTEE MEDALLION PROGRAM), PURSUANT
                                     TO S.E.C. RULE 17Ad-15.
                                     ---------------------------------------
                                          SIGNATURE(S) GUARANTEED BY:







                                     ----------------------------------------

        This certificate also evidences and entitles the holder hereof to
certain Rights as set forth in the Rights Agreement, dated as of March 11, 1999,
by and between Trinity Industries, Inc. (the "Company") and The Bank of New
York, as Rights Agent (the "Rights Agreement"), the terms of which are hereby
incorporated herein by reference and a copy of which is on file at the principal
offices of the Company. Under certain circumstances, as set forth in the Rights
Agreement, such Rights will be evidenced by separate certificates and will no
longer be evidenced by this certificate. The Company will mail to the holder of
this certificate a copy of the Rights Agreement, as in effect on the date of
mailing, without charge promptly after receipt of a written request therefor.
Under certain circumstances set forth in the Rights Agreement, Rights issued
to, or held by, any Person who is, was or becomes an Acquiring Person or any
Affiliate or Associate thereof (as such terms are defined in the Rights
Agreement), whether currently held by or on behalf of such Person or by any
subsequent holder, may become null and void.


                NOTICE:

      THE SIGNATURE TO THIS
      ASSIGNMENT MUST CORRESPOND
      WITH THE NAME AS WRITTEN
      UPON THE FACE OF THE
      CERTIFICATE IN EVERY
      PARTICULAR, WITHOUT
      ALTERATION OR ENLARGEMENT,
      OR ANY CHANGE WHATEVER.

<PAGE>   1
                         EXECUTIVE SEVERANCE AGREEMENT

         THIS AGREEMENT, dated as of ___________, 1999, between Trinity
Industries, Inc., a Delaware corporation (the "Company"), and _________________
(the "Executive")

                                  WITNESSETH:

         WHEREAS, the Company's Board of Directors has determined that it is
appropriate to reinforce and encourage the continued attention and dedication of
members of the Company's management, including the Executive, to their assigned
duties without distraction in potentially disturbing circumstances arising from
the possibility of a Change in Control of the Company (as hereinafter defined).

         NOW, THEREFORE, this Agreement sets forth the severance compensation
which the Company agrees it will pay to the Executive if the Executive's
employment with the Company terminates under one of the circumstances described
herein following a Change in Control of the Company.

         1. TERM. This Agreement shall terminate, except to the extent that any
obligation of the Company hereunder remains unpaid as of such time, upon the
earliest of:

               (i) June 8, 2000; provided, however, that, commencing on June 8,
          1999 and on each anniversary date thereafter (each such date, an
          "Anniversary Date"), the expiration date under this clause (i) shall
          automatically be extended for one additional year unless, not later
          than the December 31 immediately prior to such Anniversary Date,
          either party shall have given written notice that it does not wish to
          extend this Agreement;

               (ii) the termination of the Executive's employment with the
          Company based on death, Disability (as defined in Section 3(b) hereof)
          or Cause (as defined in Section 3(d) hereof) or by the Executive for
          Good Reason (as defined in Section 3(e) hereof); and

               (iii) two years from the date of a Change in Control of the
          Company if the Executive has not terminated his employment for Good
          Reason as of such time.

         2. CHANGE IN CONTROL. No compensation shall be payable under this
Agreement unless and until (a) there shall have been a Change in Control of the
Company, while the Executive is still an employee of the Company and (b) the
Executive's employment by the Company


<PAGE>   2



thereafter shall have been terminated in accordance with Section 3.

For purposes of this Agreement, a "Change in Control" of the Company shall be
deemed to have occurred if the event set forth in any one of the following
paragraphs shall have occurred:

               (i) any Person is or becomes the Beneficial Owner, directly or
          indirectly, of securities of the Company (not including in the
          securities beneficially owned by such Person any securities acquired
          directly from the Company or its affiliates) representing 30% or more
          of the combined voting power of the Company's then outstanding
          securities, excluding any Person who becomes such a Beneficial Owner
          in connection with a transaction described in clause (A) of paragraph
          (iii) below; or

               (ii) the following individuals cease for any reason to constitute
          a majority of the number of directors then serving: individuals who,
          on May 6, 1997, constitute the Board and any new director (other than
          a director whose initial assumption of office is in connection with an
          actual or threatened election contest, including but not limited to a
          consent solicitation, relating to the election of directors of the
          Company) whose appointment or election by the Board or nomination for
          election by the Company's stockholders was approved or recommended by
          a vote of at least two-thirds (2/3) of the directors then still in
          office who either were directors on May 6, 1997 or whose appointment,
          election or nomination for election was previously so approved or
          recommended; or

               (iii) there is consummated a merger or consolidation of the
          Company or any direct or indirect subsidiary of the Company with any
          other corporation, other than (A) a merger or consolidation which
          would result in the voting securities of the Company outstanding
          immediately prior to such merger or consolidation continuing to
          represent (either by remaining outstanding or by being converted into
          voting securities of the surviving entity or any parent thereof) at
          least 60% of the combined voting power of the securities of the
          Company or such surviving entity or any parent thereof outstanding
          immediately after such merger or consolidation, or (B) a merger or
          consolidation

                                       2


<PAGE>   3

          effected to implement a recapitalization of the Company (or similar
          transaction) in which no Person is or becomes the Beneficial Owner,
          directly or indirectly, of securities of the Company (not including in
          the securities Beneficially Owned by such Person any securities
          acquired directly from the Company or its Affiliates other than in
          connection with the acquisition by the Company or its Affiliates of a
          business) representing 30% or more of the combined voting power of the
          Company's then outstanding securities; or

               (iv) the stockholders of the Company approve a plan of complete
          liquidation or dissolution of the Company or there is consummated an
          agreement for the sale or disposition by the Company of all or
          substantially all of the Company's assets, other than a sale or
          disposition by the Company of all or substantially all of the
          Company's assets to an entity, at least 60% of the combined voting
          power of the voting securities of which are owned by stockholders of
          the Company in substantially the same proportions as their ownership
          of the Company immediately prior to such sale.

     For purposes hereof:

     "Affiliate" shall have the meaning set forth in Rule 12b-2 promulgated
     under Section 12 of the Exchange Act.

     "Beneficial Owner" shall have the meaning set forth in Rule 13d-3 under the
     Exchange Act.

     "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended
     from time to time.

     "Person" shall have the meaning given in Section 3(a)(9) of the Exchange
     Act, as modified and used in Sections 13(d) and 14(d) thereof, except that
     such term shall not include (i) the Company or any of its subsidiaries,
     (ii) a trustee or other fiduciary holding securities under an employee
     benefit plan of the Company or any of its Affiliates, (iii) an underwriter
     temporarily holding securities pursuant to an offering of such securities
     or (iv) a Corporation owned, directly or indirectly, by the stockholders of
     the Company in substantially the same proportions as their ownership of
     stock of the Company.

                                       3


<PAGE>   4
         3. TERMINATION FOLLOWING CHANGE IN CONTROL. (a) If a Change in Control
of the Company shall have occurred while the Executive is still an employee of
the Company, the Executive shall be entitled to the compensation provided in
Section 4 hereof upon the subsequent termination of the Executive's employment
with the Company by the Executive or by the Company unless such termination is
as a result of:

               (i)   the Executive's death;

               (ii)  the Executive's Disability (as defined in Section (3)(b)
         below);

               (iii) the Executive's termination by the Company for Cause (as
         defined in Section 3(d) below); or

               (iv)  the Executive's decision to terminate employment other than
         for Good Reason (as defined in Section 3(e) below).

         (b) DISABILITY. If, as a result of the Executive's incapacity due to
physical or mental illness, the Executive shall have been absent from his duties
with the Company on a full-time basis for one year and within thirty days after
written Notice of Termination (as hereinafter defined) is thereafter given by
the Company, the Executive shall not have returned to the full-time performance
of the Executive's duties, the Company may terminate this Agreement for
"DISABILITY."

         (c) [subsection intentionally left blank].

         (d) CAUSE. The Company may terminate the Executive's employment for
CAUSE. For purposes of this Agreement only, the Company shall have "Cause" to
terminate the Executive's employment hereunder only on the basis of:

               (i) the willful and continued failure by the Executive to
         substantially perform the Executive's duties with the Company (other
         than any such failure resulting from the Executive's incapacity due
         to physical or mental illness and other than in respect of any duties
         inconsistent with, or more burdensome than, the Executive's duties
         with the Company immediately prior to a Change in Control of the
         Company);

               (ii) the willfully engaging by the Executive in continued
         misconduct which is materially injurious to the Company after having
         been advised in writing of the particular misconduct deemed by the
         Company to be materially injurious to the Company and instructed in



                                       4


<PAGE>   5



     such writing to cease any further misconduct of a similar nature;

          (iii) misappropriation or embezzlement from the Company of any other
     act or acts of dishonesty by the Executive constituting a felony that
     results, or is intended to result, directly or indirectly, in gain to or
     personal enrichment of the Executive at the Company's expense; or

          (iv) the conviction of the Executive of a felony involving the moral
     turpitude of the Executive.

For purposes of this Section 3(d), no act or failure to act on the part of the
Executive shall be considered "willful" unless done, or omitted to be done, by
the Executive not in good faith and without reasonable belief that the action or
omission of the Executive was in the best interest of the Company.
Notwithstanding the foregoing, the Executive shall not be deemed to have been
terminated for Cause unless and until there shall have been delivered to the
Executive a copy of a resolution duly adopted by the affirmative vote of not
less than three-quarters of the entire membership of the Company's Board of
Directors at a meeting of the Board called and held for the purpose (after
reasonable notice to the Executive and an opportunity for the Executive,
together with the Executive's counsel, to be heard before the Board), finding
that the Executive was guilty of conduct set forth in this Section 3(d) and
specifying the particulars thereof in detail.

         (e) GOOD REASON. The Executive may terminate the Executive's employment
for Good Reason at any time after a Change in Control of the Company. For
purposes of this Agreement "GOOD REASON" shall mean any of the following
(without the Executive's express written consent):

          (i) the assignment to the Executive by the Company of duties
     inconsistent with the Executive's position, duties, responsibilities and
     status with the Company immediately prior to a Change in Control of the
     Company, or a change in the Executive's titles or offices as in effect
     immediately prior to a Change in Control of the Company, or any removal of
     the Executive from or any failure to reelect the Executive to any of such
     positions, except in connection with the termination of his employment for
     Disability or Cause or as a result of the Executive's death or by the
     Executive other than for Good Reason;

                                       5


<PAGE>   6






          (ii) a reduction by the Company in the Executive's base salary as in
     effect on the date hereof or as the same may be increased from time to time
     during the term of this Agreement or the Company's failure to increase
     (within 12 months of the Executive's last increase in base salary) the
     Executive's base salary after a Change in Control of the Company in an
     amount which at least equals, on a percentage basis, the average percentage
     increase in base salary for all officers of the Company effected in the
     preceding 12 months;

          (iii) any failure by the Company to continue in effect any benefit
     plan or arrangement (including, without limitation, the Company's pension
     plan, group life insurance plan, and medical, dental, accident and
     disability plans) in which the Executive is participating at the time of a
     Change in Control of the Company (or any other plans providing the
     Executive with substantially similar benefits) (hereinafter referred to as
     "Benefit Plans"), or the taking of any action by the Company which would
     adversely affect the Executive's participation in or materially reduce the
     Executive's benefits under any such Benefit Plan or deprive the Executive
     of any material fringe benefit enjoyed by the Executive at the time of a
     Change in Control of the Company;

          (iv) any failure by the Company to continue in effect any incentive
     plan or arrangement (including, without limitation, the Company's Incentive
     Compensation Plan) in which the Executive is participating at the time of a
     Change in Control of the Company (or any other plans or arrangements
     providing him with substantially similar benefits) (hereinafter referred to
     as "Incentive Plan") or the taking of any action by the Company which would
     adversely affect the Executive's participation in any such Incentive Plan
     or reduce the Executive's benefits under any such Incentive Plan, expressed
     as a percentage of his base salary, in any fiscal year as compared to the
     immediately preceding fiscal year;

          (v) any failure by the Company to continue in effect any plan or
     arrangement to receive securities of the Company (including, without
     limitation, the Company's Stock Option Plan, and any other plan or
     arrangement to receive and exercise stock options, stock appreciation
     rights, restricted stock or grants thereof) in which the Executive is
     participating at the time of a Change in Control of the Company (or plans
     or

                                       6


<PAGE>   7
arrangements providing him with substantially similar benefits) (hereinafter
referred to as "Securities Plans") or the taking of any action by the Company
which would adversely affect the Executive's participation in or materially
reduce the Executive's benefits under any such Securities Plan;

          (vi) a relocation of the Company's principal executive offices to a
     location outside of Dallas County, Texas, or the Executive's relocation to
     any place other than the location at which the Executive performed the
     Executive's duties prior to a Change in Control of the Company, except for
     required travel by the Executive on the Company's business to an extent
     substantially consistent with the Executive's business travel obligations
     at the time of a Change in Control of the Company;

          (vii) any failure by the Company to provide the Executive with the
     number of paid vacation days to which the Executive is entitled at the time
     of a Change in Control of the Company;

          (viii) any material breach by the Company of any provision of this
     Agreement;

          (ix) any failure by the Company to obtain the assumption of this
     Agreement by any successor or assign of the Company; or

          (x) any purported termination of the Executive's employment which is
     not effected pursuant to a Notice of Termination satisfying the
     requirements of Section 3(f) below, and for purposes of this Agreement, no
     such purported termination shall be effective.

         (f) NOTICE OF TERMINATION. Any termination by the Company pursuant to
Section 3(b), 3(c) or 3(d) shall be communicated by a Notice of Termination. For
purposes of this Agreement, a "NOTICE OF TERMINATION" shall mean a written
notice which shall indicate those specific termination provisions in this
Agreement relied upon and which sets forth in reasonable detail the facts and
circumstances claimed to provide a basis for termination of the Executive's
employment under the provision so indicated. For purposes of this Agreement, no
such purported termination by the Company shall be effective without such Notice
of Termination.

         (g) DATE OF TERMINATION. "DATE OF TERMINATION" shall mean (a) if this
Agreement is terminated by the Company for Disability,

                                       7


<PAGE>   8
thirty days after Notice of Termination is given to the Executive (provided that
the Executive shall not have returned to the performance of the Executive's
duties on a full-time basis during such 30-day period) or (b) if the Executive's
employment is terminated by the Company for any other reason, the date on which
a Notice of Termination is given.

         4. SEVERANCE COMPENSATION UPON TERMINATION OF EMPLOYMENT.

          The Company may terminate the Executive's employment at any time;
          however, if the Company shall terminate the Executive's employment
          other than pursuant to Section 3(b) or 3(d) or if the Executive shall
          terminate his employment for Good Reason, then as severance pay and as
          the Executive's sole remedy for such termination:

               (i) the Company shall pay to the Executive in a lump sum, in
          cash, on or before the fifth day following the Date of Termination, an
          amount equal to three times the sum of (A) the Executive's base salary
          as in effect immediately prior to the Change in Control or, if higher,
          in effect immediately prior to the Date of Termination and (B) the
          bonus earned with respect to the fiscal year immediately prior to the
          Change in Control or, if higher, the fiscal year immediately prior to
          the Date of Termination;


               (ii) the Company shall provide, at the Company's sole expense,
          all benefits to which the Executive and anyone entitled to claim under
          or through the Executive would be entitled under the Company's group
          hospitalization plan, health care plan, dental care plan, life or
          other insurance or death benefit plan, or other present or future
          similar group employee benefit plan or program of the Company for
          which key executives are eligible, as such plans are in effect
          immediately prior to the Change in Control (or, if more favorable to
          the Executive, immediately prior to the Notice of Termination), to the
          same extent as if the Executive had continued in the employment of the
          Company during the thirty-six month period following the Date of
          Termination;

               (iii) the Company shall pay to the Executive and, if applicable,
          to his beneficiaries, in cash, on or before the fifth day following
          the Date of Termination, a lump sum representing the present value of
          the excess of (A) the benefit (expressed as a life annuity commencing
          at age 65 or such earlier date as of which the actuarial equivalent of
          such annuity is greatest) that the Executive would have accrued under
          the provi-

                                       8

<PAGE>   9






          sions of the Company's Pension Plan for Salaried Employees in effect
          immediately prior to the Change in Control had the Executive continued
          to be employed for an additional thirty-six months following the Date
          of Termination at the annual rate of compensation taken into account
          under clause (i) hereof over (B) the benefit actually accrued by the
          Executive under such plan. For purposes hereof, "present value" shall
          be determined using a per annum discount rate as established from time
          to time for the Company's Pension Plan for Salaried Employees and
          "actuarial equivalent" shall be determined using the same assumptions
          utilized under such plan.

          The foregoing payments shall be subject to withholding of federal,
          state and local income, FICA and similar taxes, if required by law.

              4.A. Whether or not the Executive becomes entitled to the payments
          under Section 4 hereof, if any of the payments or benefits received or
          to be received by the Executive in connection with a Change in Control
          or the Executive's termination of employment (whether pursuant to the
          terms of this Agreement or any other plan, arrangement or agreement
          with the Company, any Person whose actions result in a Change in
          Control or any Person affiliated with the Company or such Person)
          (such payments or benefits, excluding the Gross-Up Payment, being
          hereinafter referred to as the "Total Payments") would be subject to
          the excise tax imposed under section 4999 of the Internal Revenue Code
          of 1986, as amended (the "Excise Tax"), the Company shall pay to the
          Executive an additional amount (the "Gross-Up Payment") such that the
          net amount retained by the Executive, after deduction of any Excise
          Tax on the Total Payments and any federal, state and local income and
          employment taxes and Excise Tax upon the Gross-Up Payment, shall be
          equal to the Total Payments. For purposes of determining the amount of
          the Gross-Up Payment, the Executive shall be deemed to pay federal
          income taxes at the highest marginal rate of federal income taxation
          in the calendar year in which the Gross-Up Payment is to be made and
          state and local income taxes at the highest marginal rates of taxation
          in the state and locality of the residence of the Executive on the
          Date of Termination, net of the maximum reduction in federal income
          taxes which could be obtained from deduction of such state and local
          taxes. All determinations made under this Section 4.A. shall be made
          by the accounting firm which served as the

                                       9


<PAGE>   10








          Company's auditor immediately prior to the Change in Control.

         5. NO OBLIGATION TO MITIGATE DAMAGES; NO EFFECT ON OTHER CONTRACTS.
(a) The Executive shall not be required to mitigate damages or the amount of
any payment provided for under this Agreement by seeking other employment or
otherwise, nor shall the amount of any payment provided for under this Agreement
be reduced by any compensation earned by the Executive as the result of
employment by another employer after the Date of Termination, or otherwise.

         (b) The provisions of this Agreement, and any payment provided for
hereunder, shall not reduce any amounts otherwise payable, or in any way
diminish the Executive's existing rights, or rights which would accrue solely as
a result of the passage of time, under any other agreement, contract, plan or
arrangement with the Company.

         6. SUCCESSOR TO THE COMPANY. (a) The Company will require any successor
(whether direct or indirect, by purchase, merger, consolidation or otherwise)
to all or substantially all of the business and/or assets of the Company by
written agreement in form and substance satisfactory to the Executive,
expressly, absolutely and unconditionally to assume and agree to perform this
Agreement in the same manner and to the same extent that the Company would be
required to perform it if no such succession had taken place. Any failure of the
Company to obtain such agreement prior to the effectiveness of any such
succession shall be a material breach of this Agreement and shall entitle the
Executive to terminate the Executive's employment for Good Reason. As used in
this Agreement, "Company" shall mean the Company as hereinbefore defined and any
successor to its business and/or assets as aforesaid which executes and delivers
the agreement provided for in this Section 6 or which otherwise becomes bound by
all the terms and provisions of this Agreement by operation of law.

         (b) This Agreement shall inure to the benefit of and be enforceable by
the Executive's personal and legal representatives, executors, administrators,
successors, heirs, distributees, devisees and legatees. If the Executive should
die while any amounts are still payable to him hereunder, all such amounts,
unless otherwise provided herein, shall be paid in accordance with the terms of
this Agreement to the Executive's devisee, legatee, or other designee or, if
there be no such devisee, legatee or other designee, to executor or
administrator of the Executive's estate.

         7. NOTICE. For purposes of this Agreement, notices and all other
communications provided for in the Agreement shall be in writing and shall be
deemed to have been duly given when delivered

                                       10


<PAGE>   11






or mailed by United States registered mail, return receipt requested, postage
prepaid, as follows:

               If to the Company:

                    Trinity Industries, Inc.
                    P. O. Box 568887
                    Dallas, Texas 75356-8887
                    Attention: President

               If to the Executive:

                    Name of Executive
                    Address

or such other address as either party may have furnished to the other in writing
in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         8. MISCELLANEOUS. No waiver by either party hereto at any time of any
breach by the other party hereto of, or compliance with, any condition or
provision of this Agreement to be performed by such other party shall be deemed
a waiver of similar or dissimilar provisions or conditions at the same or at any
prior or subsequent time. No agreements or representations, oral or otherwise,
express or implied with respect to the subject matter hereof have been made by
either party which are not set forth expressly in this Agreement. This Agreement
shall be governed by and construed in accordance with the laws of the State of
Texas.

         9. VALIDITY. The invalidity or unenforceability of any provisions of
this Agreement shall not affect the validity or enforceability of any other
provision of this Agreement, which shall remain in full force and effect.

         10. COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same instrument.

         11. LEGAL FEES AND EXPENSES. The Company shall pay all legal fees and
expenses which the Executive may incur as a result of the Company's contesting
the validity, enforceability or the Executive's interpretation of, or
determinations under, this Agreement.

         12. CONFIDENTIALITY. The Executive shall retain in confidence any and
all confidential information known to the Executive concerning the Company and
its business so long as such information is not otherwise publicly disclosed.

                                       11


<PAGE>   12






         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first above written.

                                        TRINITY INDUSTRIES, INC.

                                        By
                                          --------------------------------------
                                        Name: Timothy R. Wallace
                                        Title: Chairman and President

                                             EXECUTIVE

                                        By
                                          --------------------------------------
                                        Name:
                                        Title:

                                       12

<PAGE>   1
                             AMENDMENT NO. 1 TO THE
                            TRINITY INDUSTRIES, INC.
                           DIRECTORS' RETIREMENT PLAN



         Pursuant to the provisions of Section 12 thereof, the Trinity
Industries, Inc. Directors' Retirement Plan (the "Plan") is hereby amended
effective as of September 10, 1998 in the following respects only:

         FIRST: Section 1 of the Plan is hereby amended by adding the following
paragraph to the end thereof:

              The preceding provisions of this Section 1 to the contrary
         notwithstanding, any former Director who has commenced receiving
         monthly payments under this Plan following his retirement or disability
         and who has more than one such monthly payment remaining to be paid may
         elect in writing on a form acceptable to the Company to waive his right
         to continue receiving monthly payments hereunder and in lieu thereof to
         receive one lump sum payment in an amount equal to 90% of the present
         value of the monthly payments remaining to be paid at the time of such
         lump sum payment. The present value shall be determined using the
         actuarial assumptions that would be used for calculating lump sum
         distributions under the Trinity Industries, Inc. Standard Pension Plan,
         and the payment will be made in cash to the former Director no later
         than 15 days following receipt of his election by the Company. In the
         event that a former Director receives a lump sum payment in accordance
         with this provision, no further benefits will be owed to or on account
         of such former Director under this Plan and the remaining 10% of the
         present value of the monthly payments shall be forfeited.

         SECOND: Section 2 of the Plan is hereby amended by adding the following
paragraph to the end thereof:

              The preceding provisions of this Section 2 to the contrary
         notwithstanding, any beneficiary of a former Director who is receiving
         monthly payments under the provisions of this Section 2 and who has
         more than one such monthly payment remaining to be paid may elect in
         writing on a form acceptable to the Company to waive his right to
         continue receiving monthly payments hereunder and in lieu thereof to
         receive one lump sum payment in an amount equal to 90% of the present
         value of the monthly payments remaining to be paid at the time of such
         lump sum payment. The present value shall be determined using the
         actuarial assumptions that would be used for calculating lump sum
         distributions under the Trinity Industries, Inc. Standard Pension Plan,
         and the payment will be made in cash to the beneficiary no later than
         15 days following receipt of his election by the Company. In the event
         that a beneficiary of a former Director receives a lump sum payment in
         accordance with this provision, no further benefits will be owed to
         such beneficiary on account of such former Director under this Plan and
         the remaining 10% of the present value of the monthly payments shall be
         forfeited.



<PAGE>   2



         THIRD: Section 5 of the Plan is hereby amended by restatement in its
entirety to read as follows:

              5. Notwithstanding anything herein to the contrary, in the event
         of a Change of Control:

              (I)    The vested percentage referred to in Section 3 of this Plan
                     shall be 100% for each member of the Board of Directors at
                     the time of such Change of Control, irrespective of the
                     number of such Director's years of service.

              (II)   Any former Director (or beneficiary of a former Director)
                     who is receiving monthly payments pursuant to Section 1 (or
                     Section 2 with respect to a beneficiary) and any Director
                     who ceases to be a member of the Board of Directors on or
                     after the date of such Change of Control, who elected (or
                     with respect to a beneficiary, if the former Director
                     elected) an accelerated Change of Control payment, as
                     described below, shall receive, in lieu of the monthly
                     payments that otherwise would be owed to the Director under
                     this Plan pursuant to Section 1 hereof (or beneficiary
                     pursuant to Section 2 hereof), either (i) a cash lump sum
                     payment in an amount equal to the present value of such
                     monthly payments, or (ii) equal annual cash installments
                     over five (5), six (6) or seven (7) years in an aggregate
                     amount which is the actuarial equivalent of such monthly
                     payments, whichever method was elected by the Director on
                     the election form. The accelerated Change of Control
                     payment shall be elected by the Director on a separate
                     election form for such purpose at the time the Director
                     initially becomes covered by this Plan or, if later, on or
                     before July 20, 1999 and shall be irrevocable; provided,
                     however, that a Director or former Director may make,
                     revoke or change an accelerated Change of Control
                     distribution election subsequent to the initial election
                     with the new election to be effective only in the event
                     that the new election is made at least 12 months prior to
                     the date payments under this provision commence.

              (III)  Each member of the Board of Directors at the time of such
                     Change of Control and each former Director (or beneficiary
                     of a former Director) who has not yet received the entire
                     benefit to which he is entitled under this Plan, regardless
                     of whether an election was made in accordance with the
                     preceding paragraph (II) and regardless of whether payment
                     has yet commenced, may elect in writing on a form
                     acceptable to the Company to waive his right to any future
                     payment or payments hereunder and in lieu thereof to
                     receive one lump sum payment in an amount equal to 90% of
                     the present value of the payments owed with respect to the
                     Director or former Director under this Plan at the time of
                     such lump sum payment. In the event that a Director or
                     former Director (or beneficiary of a former Director)
                     receives a lump sum payment in accordance with this
                     provision, no further benefits will be owed to or on
                     account of such Director or former Director under this Plan
                     and the


                                                 -2-

<PAGE>   3


                     remaining 10% of the present value of the payments
                     otherwise owed shall be forfeited.

               The amount to be distributed as the lump sum present value or
actuarial equivalent annual installments shall be determined using the actuarial
assumptions that would be used for calculating lump sum distributions or
installment payments, as appropriate, under the Trinity Industries, Inc.
Standard Pension Plan.

               A "Change of Control" shall be deemed to have occurred for
purposes of this Plan if the event set forth in any one of the following
paragraphs shall have occurred:

               (I)   any Person is or becomes the Beneficial Owner, directly or
                     indirectly, of securities of the Company (not including in
                     the securities beneficially owned by such Person any
                     securities acquired directly from the Company or its
                     affiliates) representing 30% or more of the combined voting
                     power of the Company's then outstanding securities,
                     excluding any Person who becomes such a Beneficial Owner in
                     connection with a transaction described in clause (i) of
                     paragraph (III) below; or

               (II)  the following individuals cease for any reason to
                     constitute a majority of the number of directors then
                     serving: individuals who, on May 6, 1997, constitute the
                     Board of Directors and any new director (other than a
                     director whose initial assumption of office is in
                     connection with an actual or threatened election contest,
                     including but not limited to a consent solicitation,
                     relating to the election of directors of the Company) whose
                     appointment or election by the Board of Directors or
                     nomination for election by the Company's stockholders was
                     approved or recommended by a vote of at least two-thirds
                     (2/3) of the directors then still in office who either were
                     directors on May 6, 1997, or whose appointment, election or
                     nomination for election was previously so approved or
                     recommended; or

               (III) there is consummated a merger or consolidation of the
                     Company or any direct or indirect subsidiary of the Company
                     with any other corporation, other than (i) a merger or
                     consolidation which would result in the voting securities
                     of the Company outstanding immediately prior to such merger
                     or consolidation continuing to represent (either by
                     remaining outstanding or by being converted into voting
                     securities of the surviving entity or any parent thereof)
                     at least 60% of the combined voting power of the securities
                     of the Company or such surviving entity or any parent
                     thereof outstanding immediately after such merger or
                     consolidation, or (ii) a merger or consolidation effected
                     to implement a recapitalization of the Company (or similar
                     transaction) in which no Person is or becomes the
                     Beneficial Owner, directly or indirectly, of securities of
                     the Company (not including in the securities Beneficially
                     Owned by such Person any securities acquired directly from
                     the Company or its Affiliates other than in connection with
                     the acquisition by the Company


                                                -3-

<PAGE>   4


                     or its affiliates of a business) representing 30% or more
                     of the combined voting power of the Company's then
                     outstanding securities; or

                (IV) the stockholders of the Company approve a plan of complete
                     liquidation or dissolution of the Company or there is
                     consummated an agreement for the sale or disposition by the
                     Company of all or substantially all of the Company's
                     assets, other than a sale or disposition by the Company of
                     all or substantially all of the Company's assets to an
                     entity, at least 60% of the combined voting power of the
                     voting securities of which are owned by stockholders of the
                     Company in substantially the same proportions as their
                     ownership of the Company immediately prior to such sale.

                For purposes hereof:

                "Affiliate" shall have the meaning set forth in Rule l2b-2
                promulgated under Section 12 of the Exchange Act.

                "Beneficial Owner" shall have the meaning set forth in Rule
                l3d-3 under the Exchange Act.

                "Exchange Act" shall mean the Securities Exchange Act of 1934,
                as amended from time to time.

                "Person" shall have the meaning given in Section 3(a)(9) of the
                Exchange Act, as modified and used in Sections 13(d) and 14(d)
                thereof, except that such term shall not include (i) the Company
                or any of its subsidiaries, (ii) a trustee or other fiduciary
                holding securities under an employee benefit plan of the Company
                or any of its Affiliates, (iii) an underwriter temporarily
                holding securities pursuant to an offering of such securities,
                or (iv) a corporation owned, directly or indirectly, by the
                stockholders of the Company in substantially the same
                proportions as their ownership of stock of the Company.

         FOURTH: Section 12 of the Plan is hereby amended by adding the
following to the end thereof:

         Any provision of this Plan to the contrary notwithstanding, no action
         taken on or after a Change of Control to amend, modify, freeze or
         terminate this Plan shall be effective unless written consent thereto
         is obtained from a majority of the participants who were Directors
         immediately prior to such Change of Control.


                                      -4-

<PAGE>   5



         IN WITNESS WHEREOF, this Amendment has been executed this _____ day of
________________, 1999.


                                             TRINITY INDUSTRIES, INC.

                                             By
                                               -------------------------------
                                               Title:

                                      -5-


<PAGE>   1
                      SUPPLEMENTAL RETIREMENT BENEFIT PLAN
                                       FOR
                                 W. RAY WALLACE

                                 AMENDMENT NO. 1

     WHEREAS, the Board of Directors wishes to amend the definition of "Annual
Compensation" to reflect annual earnings based on "earned" incentive
compensation rather than "paid," the definition of "Annual Compensation" shall
become as follows:

          "Annual Compensation" shall mean the base, incentive, deferred and
     other compensation earned by the Employee for a particular fiscal year, but
     shall not include pension, profit sharing or other retirement plan
     contributions or benefits, the grant or exercise of stock options, life and
     health insurance premiums or benefits, medical reimbursements, reimburse
     expenses, deferred incentive not ultimately paid, or any other perquisites.

     IN WITNESS WHEREOF, the Company and Employee have executed this Amendment
on this 14th day of September 1995, effective as of the date the original plan
was approved by the Board of Directors of the Company.

                                             TRINITY INDUSTRIES, INC.

                                             By: /s/ JACK CUNNINGHAM
                                                -------------------------------
                                                Jack Cunningham
                                                Vice President

                                                /s/ W. RAY WALLACE
                                                -------------------------------
                                                W. Ray Wallace




<PAGE>   2



                      SUPPLEMENTAL RETIREMENT BENEFIT PLAN
                               FOR W. RAY WALLACE
                                 AMENDMENT NO 2

         The Supplemental Retirement Benefit Plan (the "Plan"), effective as of
July 18, 1990 between Trinity Industries, Inc. (the "Company") and W. Ray
Wallace, is hereby amended, effective as of May 6, 1997, as set forth below.

         Any term which is not defined below shall have the meaning set forth
for such term in the Plan.

         1. Section 4 of the Plan is hereby amended and restated by adding the
following sentence at the end thereof:

     Notwithstanding the foregoing or the provisions of Section 5 hereof, in the
     event of a Change in Control of the Company (as hereinafter defined), the
     actuarial value of his Supplemental Retirement Benefits shall be paid into
     a trust immediately following a Change in Control and, upon termination of
     employment following a Change in Control, paid in a lump sum to Mr. W. Ray
     Wallace within five days following such termination.

         2. Section 6 of the Plan is hereby amended and restated to read as
follows:

                                       6.

                     MATERIAL CHANGES AFFECTING THE COMPANY

          In the event of a Change in Control (as hereinafter defined), the
     Company shall deposit in trust for Employee with a national bank designated
     by Employee that has offices in Dallas, Texas and a capital and surplus of
     not less than Twenty-Five Million Dollars, as trustee,



<PAGE>   3

     the actuarial equivalent of the Supplemental Retirement Benefits payable
     hereunder, calculated as if such Supplemental Retirement benefits commence
     twenty (20) days after the date of such Change in Control. The terms of
     the trust shall provide (a) for payments comparable to the payments that
     the Company would otherwise pay under this Agreement, (b) shall create a
     spendthrift trust and (c) shall otherwise be in form and substance
     determined by Employee.

          For purposes hereof, a "Change in Control" shall be deemed to have
     occurred if the event set forth in any one of the following paragraphs
     shall have occurred:

               (I) any Person is or becomes the Beneficial Owner, directly or
     indirectly, of securities of the Company (not including in the securities
     beneficially owned by such Person any securities acquired directly from the
     Company or its affiliates) representing 30% or more of the combined voting
     power of the Company's then outstanding securities, excluding any Person
     who becomes such a Beneficial Owner in connection with a transaction
     described in clause (i) of paragraph (III) below; or

               (II) the following individuals cease for any reason to constitute
     a majority of the number of directors then serving: individuals who, on May
     6, 1997, constitute the Board and any new director (other than a director
     whose initial assumption of office is in connection with an actual or
     threatened election contest, including but not limited to a consent
     solicitation, relating to the election of directors of the Company) whose
     appointment or election by the Board or nomination for election by the
     Company's stockholders was approved or recommended by a vote of at least
     two-thirds (2/3) of the directors then still in office who

                                       2

<PAGE>   4



     either were directors on May 6, 1997 or whose appointment, election or
     nomination for election was previously so approved or recommended; or

               (III) there is consummated a merger or consolidation of the
     Company or any direct or indirect subsidiary of the Company with any other
     corporation, other than (i) a merger or consolidation which would result in
     the voting securities of the Company outstanding immediately prior to such
     merger or consolidation continuing to represent (either by remaining
     outstanding or by being converted into voting securities of the surviving
     entity or any parent thereof) at least 60% of the combined voting power of
     the securities of the Company or such surviving entity or any parent
     thereof outstanding immediately after such merger or consolidation, or (ii)
     a merger or consolidation effected to implement a recapitalization of the
     Company (or similar transaction) in which no Person is or becomes the
     Beneficial Owner, directly or indirectly, of securities of the Company (not
     including in the securities Beneficially Owned by such Person any
     securities acquired directly from the Company or its Affiliates other than
     in connection with the acquisition by the Company or its affiliates of a
     business) representing 30% or more of the combined voting power of the
     Company's then outstanding securities; or

               (IV) the stockholders of the Company approve a plan of complete
     liquidation or dissolution of the Company or there is consummated an
     agreement for the sale or disposition by the Company of all or
     substantially all of the Company's assets, other than a sale or
     disposition by the Company of all or substantially all of the Company's
     assets to an entity, at least 60% of the combined voting power of the
     voting securities of which are owned by stockholders of

                                       3

<PAGE>   5



     the Company in substantially the same proportions as their ownership of the
     Company immediately prior to such sale.

     For purposes hereof,

     "Affiliate" shall have the meaning set forth in Rule 12b-2 promulgated
     under Section 12 of the Exchange Act.

     "Beneficial Owner" shall have the meaning set forth in Rule 13d-3 under the
     Exchange Act.

     "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended
     from time to time.

     "Person" shall have the meaning given in Section 3(a)(9) of the Exchange
     Act, as modified and used in Sections 13(d) and 14(d) thereof, except that
     such term shall not include (i) the Company or any of its subsidiaries,
     (ii) a trustee or other fiduciary holding securities under an employee
     benefit plan of the Company or any of its Affiliates, (iii) an underwriter
     temporarily holding securities pursuant to an offering of such securities
     or (iv) a corporation owned, directly or indirectly, by the stockholders of
     the Company in substantially the same proportions as their ownership of
     stock of the Company.

         3. The definition of "Annual Compensation" in Section 8 of the Plan is
hereby amended and restated as follows:

          "Annual Compensation" shall mean the base, incentive, deferred and
     other compensation earned by the Employee in respect of a particular fiscal
     year, but shall not include pension, profit sharing or other retirement
     plan contributions or benefits, the grant or exercise of

                                       4

<PAGE>   6



     stock options, life and health insurance premiums or benefits, medical
     reimbursements, reimbursed expenses, or any other perquisites.

         IN WITNESS WHEREOF, the Company has caused this Amendment to be
executed by a duly authorized officer of the Company and Executive has executed
this Amendment as of the day and year first above written.


                                        TRINITY INDUSTRIES, INC.

                                        By: /s/ JESS HAY
                                           ------------------------------------


/s/ W. RAY WALLACE
- --------------------------
W. RAY WALLACE

                                       5



<PAGE>   7

                      SUPPLEMENTAL RETIREMENT BENEFIT PLAN
                               FOR W. RAY WALLACE
                                 AMENDMENT NO. 3

     The Supplemental Retirement Benefit Plan (the "Plan"), effective as of July
18, 1990 between Trinity Industries, Inc. (the "Company") and W. Ray Wallace, is
hereby amended, effective as of September 10, 1998 as set forth below:

     1. The last sentence of Section 4 of the Plan is hereby deleted in its
entirety and replaced by the following:

        Notwithstanding the foregoing or the provisions of Section 5 hereof,
        in the event of and immediately following a Change in Control of the
        Company (as hereinafter defined), the Company shall contribute to the
        Trinity Industries, Inc. Supplemental Retirement and Deferred
        Compensation Trust an amount equal to the actuarial present value of
        Employee's Supplemental Retirement Benefits which shall be credited to
        a separate account for Employee pursuant to said Trust. For purposes
        of this Section 4 and Section 5 hereof, "actuarial present value"
        shall be determined using the 1983 Group Annuity Mortality Table and
        the interest rate which would be used by the PBGC as of the first day
        of the calendar year in which the determination is being made for
        valuing lump sum payments upon a plan termination or a reasonably
        determined equivalent thereof if such rate is no longer published.

     2. Section 5 of the Plan is hereby amended by adding the following to the
end thereof:

        At any time after Employee begins to receive monthly payments under
        this Plan, if Employee so requests, 90% of the actuarial present value
        of any remaining Supplemental Retirement Benefits to be paid hereunder
        shall be paid to Employee in the form of a single lump sum payment in
        cash no later than 15 days following receipt of Employee's written
        request therefor by the Company. The remaining 10% shall be forfeited
        at the time of the distribution.

     3. Section 6 of the Plan is hereby amended by deleting the first paragraph
thereof in its entirety.


<PAGE>   8

     4. The Plan is hereby amended by adding the following new Section to the
end thereof:

                                       9.

                           AMENDMENT AND TERMINATION

        This Agreement may be amended or terminated only in a writing signed
        by Employee and a duly authorized representative of the Company.

     IN WITNESS WHEREOF, the Company has caused this Amendment to be executed
by a duly authorized officer of the Company and Executive has executed this
Amendment on this 21st day of December 1998.

                                             TRINITY INDUSTRIES, INC.

                                             By: /s/ JACK CUNNINGHAM
                                                 ------------------------------
                                                 Title:  Vice President


/s/ W. RAY WALLACE
- --------------------------
W. Ray Wallace




<PAGE>   1


                               AMENDMENT NO. 1 TO
                        SUPPLEMENTAL PROFIT SHARING PLAN
                                FOR EMPLOYEES OF
                            TRINITY INDUSTRIES, INC.
                             AND CERTAIN AFFILIATES

         WHEREAS, effective July 1, 1990, TRINITY INDUSTRIES, INC. (the
"Company") adopted, for the benefit of certain executive and managerial
employees, the SUPPLEMENTAL PROFIT SHARING PLAN FOR EMPLOYEES OF TRINITY
INDUSTRIES, INC. AND CERTAIN AFFILIATES (the "Plan"); and

         WHEREAS, pursuant to Article X of the Plan, the Company desires to
amend the Plan in certain particulars.

         NOW, THEREFORE, the Plan is hereby amended, effective as of July 1,
1990, in the following respects:

         1. Section 2.01 of the Plan is hereby revised by amending paragraph (s)
thereof to be and read as follows:

"2.01       Definitions

                                   * * * * *

            (s)     INCOME: The net gain or loss of the Trust Fund from
                    investments, as reflected by interest payments, dividends,
                    realized and unrealized gains and losses on securities,
                    other investment transactions and expenses paid from the
                    Trust Fund. In determining the Income of the Trust Fund for
                    any period, assets shall be valued on the basis of their
                    fair market value, as determined by the Trustee.
                    Notwithstanding the preceding provisions of this paragraph
                    (s), Income need not be determined by reference to the Trust
                    Fund and may be determined pursuant to any other method
                    which may, from time to time, be selected by the Company."

         2. Section 5.02 of the Plan is hereby revised by amending paragraph (a)
thereof to be and read as follows:


<PAGE>   2




"5.02       Account Adjustments

                                   * * * * *

            (a)     Income--For each calendar quarter, Income shall, as a
                    bookkeeping entry, be allocated and credited to the accounts
                    of Participants, Former Participants and Beneficiaries who
                    had unpaid balances in their accounts on the last day of
                    such calendar quarter in proportion to the balances in such
                    accounts at the beginning of the calendar quarter (i)
                    increased by one-half of all Salary Reduction Contributions
                    for such calendar quarter, and (ii) decreased by all
                    withdrawals and distributions from such accounts during such
                    calendar quarter. Notwithstanding the preceding provisions
                    of this paragraph (a), if, pursuant to the agreement
                    creating the Trust (including any appendix thereto),
                    Participants are permitted to direct the investment of their
                    accounts in one or more investment funds, Income, to the
                    extent determined by reference to the Trust Fund, shall be
                    allocated in the following manner:

                    (1)  The Income (hereinafter, the 'Fund Income')
                         attributable to each investment fund (hereinafter,
                         'Fund') which may be established pursuant to the Trust
                         (including, as a separate investment fund, assets, if
                         any, invested at the discretion of the Trustee), shall
                         first be determined.

                    (2)  Fund Income for such calendar quarter shall then, as a
                         bookkeeping entry, be allocated and credited to the
                         accounts of Participants, Former Participants and
                         Beneficiaries who had unpaid balances in their accounts
                         invested in such Fund on the last day of such calendar
                         quarter in proportion to the balances in such accounts
                         invested in such Fund at the beginning of the calendar
                         quarter (i) increased by one-half of all Salary
                         Reduction Contributions invested in such Fund during
                         such calendar quarter, and (ii) decreased by all
                         amounts withdrawn and distributed during such calendar
                         quarter from such accounts but only to the extent
                         theretofore invested in such Fund for such calendar
                         quarter.


                                   * * * * *"



                                       2
<PAGE>   3


         3. Section 6.01 of the Plan is hereby revised to be and read as
follows:

"6.01       Termination of Employment

            As of the last day of the calendar quarter within which a
            Participant terminates employment, the Committee (i) shall certify
            to the Trustee or the Treasurer of the Employer, as applicable, the
            total amount of the allocations to the credit of the Participant on
            the books of each Employer by which the Participant was employed at
            a time when amounts were credited by such Employer to his accounts
            and the Participant's vested interest in such accounts and (ii)
            shall determine whether the payment of the amounts credited to the
            Participant's accounts under the Plan is to be paid directly by the
            applicable Employer, from the Trust Fund, or by a combination of
            such sources (except to the extent the provisions of the Trust
            specify payment from the Trust Fund). Payment of the amounts
            credited to the Participant's accounts shall be made in accordance
            with the following provisions:

            (a)     In the case of an Employee who becomes a Participant prior
                    to January 1, 1992, that portion of such Participant's
                    account balances determined as of December 31, 1991 shall be
                    paid in the form of a lump sum.

            (b)     In the case of an Employee who becomes a Participant on or
                    after January 1, 1992 (or in the case of an Employee who
                    becomes a Participant prior to such date, but only with
                    respect to the post-12/31/91 portion of his account
                    balances), such Participant may irrevocably select the
                    method of payment of such amounts from the following
                    alternatives:

                    (1)  In a lump sum;

                    (2)  In periodic payments of substantially equal amounts for
                         a specified number of years not in excess of 20, in
                         which event the unpaid balance at the end of each
                         quarter shall receive an Income allocation. Such
                         periodic payments shall be made not less frequently
                         than annually; or


                                       3
<PAGE>   4



                    (3)  In any combination of the methods specified in
                         subparagraphs (1) or (2) of this paragraph (b).

                   Any election pursuant to this paragraph (b) must be made
                   prior to the later of (i) January 1, 1992 or (ii) the date on
                   which such Employee's Participation hereunder first
                   commences, with all payments to be made in the form of a lump
                   sum in the absence of a timely election. In addition, any
                   such election may be made separately with respect to payments
                   occasioned by (i) normal retirement (as defined below), death
                   or Disability and (ii) other terminations of employment. The
                   Committee shall, as of the last day of the calendar quarter
                   within which the Participant terminates employment, certify
                   to the Trustee or the Treasurer of the Employer, as
                   applicable, the method of payment selected by the
                   Participant.

            (c)    Payment of amounts credited to the Participant's accounts
                   must be made or commence on the sixtieth (60th) day following
                   the end of the calendar quarter in which the Participant's
                   termination of employment occurs.

The Trustee (to the extent provided in the Trust) or the Treasurer of the
Employer, as applicable, shall thereafter make payments of benefits in the
manner and at the times specified above, subject, however, to all of the other
terms and conditions of this Plan and the Trust. This Plan shall be deemed to
authorize the payment of all or any portion of a Participant's benefits from the
Trust Fund to the extent such payment is required by the provisions of the
Trust.

If a Participant's termination of employment is attributable to his death,
Disability or his retirement on or after age 65 ('normal retirement'), he shall
be entitled to the entire amount credited to his accounts. If a Participant's
termination of employment is not attributable to his death, Disability or normal
retirement and if such termination of employment occurs on or after a 'Change in
Control' (as defined in Section 9.05 hereof), he shall be entitled to the entire
amount credited to his accounts; or if such termination of employment occurs
prior to a Change in Control, he shall be entitled to the entire amount credited
to his Salary Reduction Contribution Account and shall be entitled to


                                       4
<PAGE>   5

a 'vested percentage' of the entire amount credited to his Employer Contribution
Account based on his years of Service, as follows:

<TABLE>
<CAPTION>
                                        Vested                 Forfeited
            Years of Service            Percentage             Percentage
            ----------------            ----------             ----------
<S>                   <C>                      <C>                 <C>
            Less than 1                        0%                  100%
            1 but less than 2                 20%                   80%
            2 but less than 3                 40%                   60%
            3 but less than 4                 60%                   40%
            4 but less than 5                 80%                   20%
            5 or more                        100%                    0%
</TABLE>

            For purposes of this Section 6.01, the 'entire amount' credited to a
            Participant's accounts at termination of employment shall include
            any amounts to be credited pursuant to Section 4.01 hereof for the
            Year of termination of employment but not yet allocated."

         4. Section 6.02 of the Plan is hereby revised to be and read as
follows:

"6.02       Death

            If a Participant shall die while in the service of an Employer, or
            after termination of employment with the Employers and prior to the
            complete distribution of all amounts payable to him under the Plan,
            any remaining amounts payable to the Participant hereunder shall be
            payable to his Beneficiary designated in accordance with Section
            6.04 hereof. The Committee shall cause the Trustee (to the extent
            provided in the Trust) or the Treasurer of the Employer, as
            applicable, to pay to such Beneficiary all of the amounts then
            standing to the credit of the Participant in his accounts, with such
            payment to be made at the time and in the manner specified in
            Section 6.01 hereof."

         5. Section 6.03 of the Plan is hereby revised to be and read as
follows:

"6.03       Plan Termination

            If the Plan is terminated pursuant to the provisions of Article X,
            the Committee shall cause the Trustee or the Treasurer of the
            Employer, as applicable, to pay to all Participants all of the
            amounts then standing to their credit. If the Plan is terminated on
            or after a 'Change in Control' (as defined in Section 9.05 hereof),
            then


                                       5
<PAGE>   6




            such payments shall be in the form of lump sum payments. If the Plan
            is terminated prior to a Change in Control, then such payments shall
            be made at the time and in the manner specified in Section 6.01
            hereof."

         6. Section 6.05 of the Plan is hereby revised to be and read as
follows:

"6.05       In-Service Distributions

            No amounts credited to a Participant's Salary Reduction Contribution
            Account or Employer Contribution Account shall be distributed to or
            on behalf of the Participant prior to the occurrence of one of the
            events specified in the preceding provisions of this Article VI
            except to the extent that the Committee, in its sole discretion,
            consents to such distribution upon a showing, by the Participant, of
            an unforeseeable emergency. For purposes of this Section 6.05, an
            unforeseeable emergency is defined as severe financial hardship to
            the Participant resulting from a sudden and unexpected illness or
            accident of the Participant or of a dependent (as defined in Section
            152(a) of the Code) of the Participant, loss of the Participant's
            property due to casualty, or other similar extraordinary and
            unforeseeable circumstances arising as a result of events beyond the
            control of the Participant. The circumstances that will constitute
            an unforeseeable emergency will depend on the facts of each case,
            but payment may not be made to the extent that such hardship is or
            may be relieved--(a) through reimbursement or compensation by
            insurance or otherwise, (b) by liquidation of the Participant's
            assets, to the extent that the liquidation of such assets would not
            itself cause severe financial hardship, or (c) by cessation of
            deferrals under the Plan."

         7. Section 7.02 of the Plan is hereby revised to be and read as
follows:

"7.02       Funding of Obligation

            Section 7.01 above to the contrary notwithstanding, the Employers
            may elect to transfer assets to the Trust, the provisions of which
            require the use of the Trust's assets to satisfy claims of an
            Employer's general unsecured creditors in the event of such
            Employer's insolvency and direct that no Participant shall at any
            time have a prior


                                       6
<PAGE>   7



            claim to such assets. The assets of the Trust shall not be deemed to
            be assets of this Plan."

         IN WITNESS WHEREOF, the Company has executed this Amendment No. 1 on
the 9th day of August, 1991, effective as of July 1, 1990.


                                              TRINITY INDUSTRIES, INC.

                                              By: /s/ JACK CUNNINGHAM
                                                 ------------------------------
                                              Title:  V.P.
                                                    ---------------------------


ATTEST:

/s/ NEIL O. SHOOP
- -----------------------------------




                                       7
<PAGE>   8
                               AMENDMENT NO. 2 TO
                        SUPPLEMENTAL PROFIT SHARING PLAN
                                FOR EMPLOYEES OF
                            TRINITY INDUSTRIES, INC.
                             AND CERTAIN AFFILIATES

     WHEREAS, effective July 1, 1990, TRINITY INDUSTRIES, INC. (the "Company")
adopted, for the benefit of certain executive and managerial employees, the
SUPPLEMENTAL PROFIT SHARING PLAN FOR EMPLOYEES OF TRINITY INDUSTRIES, INC. AND
CERTAIN AFFILIATES (the "Plan"); and

     WHEREAS, pursuant to Article X of the Plan, the Company desires to amend
the Plan in certain particulars.

     NOW, THEREFORE, the Plan is hereby amended in the following respects:

     1. Effective January 1, 1992, Section 2.01 of the Plan is hereby revised by
amending paragraph (g) thereof to be and read as follows:

"2.01   Definitions

                                    * * * * *

        (g)    COMPENSATION: The total of all amounts paid to a Participant by
               the Employer for personal services as reported on the
               Participant's Federal Income Tax Withholding Statement (Form W-2)
               plus any salary reduction amounts described in Section 4.02
               hereof and any amounts not included in the Participant's gross
               income pursuant to Section 125 of the Code, but excluding (i) any
               other contributions made under this Plan or any other plan of
               deferred compensation, (ii) tuition reimbursement payments, (iii)
               moving expense payments, (iv) excess life insurance imputed
               income, (v) income from nonqualified stock options, (vi)
               automobile allowance payments, (vii) medical allowance payments,
               (viii) safe driving bonuses, (ix) employee awards, (x) lodging
               allowance payments, (xi) tool allowance payments, (xii) road
               expense reimbursement payments, (xiii) commuting allowance
               payments, (xiv) meal allowance payments, (xv)

<PAGE>   9

               third-party sick pay, (xvi) attendance/safety bonuses, (xvii)
               travel allowances and (xviii) company automobile."

     2. Effective January 1, 1993, Section 4.02 of the Plan is hereby revised by
amending the first paragraph thereof to be and read as follows:

"4.02   Participant Salary Reduction

        Prior to commencement of Participation hereunder, a Participant shall
        have entered into a written salary reduction agreement with his
        Employer. The terms of such salary reduction agreement shall provide
        that the Participant agrees to accept a reduction in salary from the
        Employer equal to any whole percentage of his Compensation per payroll
        period. In consideration of such agreement, the Employer will credit
        the Participant's Salary Reduction Contribution Account for each Year
        with an amount equal to the total amount by which the Participant's
        Compensation from the Employer was reduced during the Year pursuant to
        the salary reduction agreement.

                                   * * * * *"

     IN WITNESS WHEREOF, the Company has executed this Amendment No. 2 on the
18th day of May, 1992, effective as of the dates noted above.

                                      TRINITY INDUSTRIES, INC.

                                      By: /s/ JACK CUNNINGHAM
                                         ------------------------------------
                                      Title:     Vice President
                                             --------------------------------

ATTEST:

/s/ NEIL O. SHOOP
- --------------------------



                                       2
<PAGE>   10
                               AMENDMENT NO. 3 TO
                        SUPPLEMENTAL PROFIT SHARING PLAN
                                FOR EMPLOYEES OF
                            TRINITY INDUSTRIES, INC.
                             AND CERTAIN AFFILIATES

     WHEREAS, effective July 1, 1990, TRINITY INDUSTRIES, INC. (the "Company")
adopted, for the benefit of certain executive and managerial employees, the
SUPPLEMENTAL PROFIT SHARING PLAN FOR EMPLOYEES OF TRINITY INDUSTRIES, INC. AND
CERTAIN AFFILIATES (the "Plan"); and

     WHEREAS, pursuant to Article X of the Plan, the Company desires to amend
the Plan in certain particulars.

     NOW, THEREFORE, effective as of April 1, 1995, the Company does hereby
amend the Plan in the following respects:

     1. Section 2.01 of the Plan is hereby revised by amending paragraph (k)
thereof to be and read as follows:

"2.01   Definitions

                                   * * * * *

        (k)    EMPLOYEE: Any individual on the payroll of an Employer (i) whose
               wages from the Employer are subject to withholding for purposes
               of Federal income taxes and for purposes of the Federal Insurance
               Contributions Act, (ii) who is included within a 'select group of
               management or highly compensated employees,' as such term is used
               in Section 401(a)(1) of ERISA, and (iii) who is designated by
               the Plan Committee as eligible to participate in this Plan;
               provided that, under no circumstances shall an individual be an
               eligible Employee hereunder until he has completed one year of
               Service (or, effective for the calendar quarter beginning April
               1, 1995, until the first day of the calendar quarter on or
               immediately following his Employment Commencement Date).

                                   * * * * *"


<PAGE>   11




     2. Section 3.01 of the Plan is hereby revised to be and read as follows:

"3.01   Participation

        An Employee shall become a Participant in this Plan on one of the
        following dates, provided that, prior to such date, he shall first
        have undertaken the actions specified in Section 3.03 hereof:

        (a)    In the case of an individual classified as an Employee under
               Section 2.01(k) hereof prior to July 1, 1990, on July 1, 1990 or
               on the first day of any of his taxable years thereafter;

        (b)    In the case of an individual classified as an Employee under
               Section 2.01(k) hereof on or after July 1, 1990, but prior to
               April 1, 1995, on the thirtieth (30th) day immediately following
               such classification or on the first day of any of his taxable
               years thereafter; or

        (c)    In the case of an individual classified as an Employee under
               Section 2.01(k) hereof on or after April 1, 1995, on the first
               day of the calendar quarter on or immediately following such
               classification or on the first day of any of his taxable years
               thereafter.

        An active Participant who incurs a Severance from Service and who is
        subsequently re-employed by an Employer shall reenter the Plan as an
        active Participant on his Reemployment Commencement Date or the first
        day of his next following taxable year, but only if (i) he continues
        to qualify as an Employee within the meaning of Section 2.01(k)
        hereof and (ii) prior to such date he shall have again undertaken the
        actions specified in Section 3.03 hereof. In the event that a
        Participant shall cease to qualify as an Employee within the meaning
        of Section 2.01(k) hereof, his Participation shall thereupon cease but
        he shall continue to accrue Service hereunder during the period of his
        continued employment with the Employers."

     3. Section 3.03 of the Plan is hereby revised to be and read
as follows:

                                       2



<PAGE>   12
"3.03   Election to Participate

        In order to participate hereunder, an Employee, otherwise eligible to
        participate pursuant to Section 3.01, must, after having received a
        written explanation of the terms of, and the benefits provided under,
        the Plan, elect to participate in such Plan on such form or forms as
        the Committee may provide and must execute a salary reduction
        agreement described in Section 4.02 hereof. Such election to
        participate and execution of a salary reduction agreement shall be
        effected on any date on or prior to the applicable date specified in
        such Section 3.01 for the commencement of Participation and, in all
        events, prior to the rendition of services for which salary subject
        to the salary reduction agreement would otherwise have been paid to
        such Employee."

     4. Section 4.01 of the Plan is hereby revised by amending paragraph (b)
thereof to be and read as follows:

"4.01   Employee Contributions

                                   * * * * *

        (b)    Additional Matching Contributions -- For each Year, each Employer
               shall credit an additional amount to each of its Employees for
               whom an amount was credited pursuant to paragraph (a) of this
               Section 4.01; provided, however, that no such additional amount
               shall be credited prior to the first day of the calendar quarter
               following the date on which such Employee completes one (1) year
               of Service. Such additional amount, when added to the Forfeitures
               which have become available for application as of the end of the
               Year pursuant to Section 4.03 hereof, shall be equal to the
               lesser of (1) or (2), where--(1) is (i) fifty percent (50%) of
               that portion of the Participant's salary reduction for such Year
               pursuant to Section 4.02 hereof which does not exceed six percent
               (6%) of his Compensation for such Year, for Participants with at
               least five (5) years of Service, or (ii) twenty-five percent
               (25%) of that portion of the Participant's salary reduction for
               such Year pursuant to Section 4.02 hereof which does not exceed
               six percent (6%) of his Compensation for such Year, for
               Participants with less than five (5) years of Service; and (2) is
               the amount that would have been credited to the Participant
               pursuant to (1) above if the Participant's salary reduction and
               Compensation for the Year had been limited to the

                                       3



<PAGE>   13




               extent provided in, respectively, Sections 402(g) and 401(a)(17)
               of the Code (and rulings and regulations issued thereunder);
               provided, however, that no portion of a Participant's salary
               reduction shall be taken into account for purposes of this
               computation if, prior to the end of such Year, such portion is
               withdrawn by, or otherwise distributed to, the Participant or his
               Beneficiary, or if such portion represents amounts credited
               pursuant to paragraph (a) of this Section 4.01 prior to the first
               day of the calendar quarter following the date on which such
               Participant completes one (1) year of Service; provided, further,
               that no Matching Employer Contributions shall be credited to
               Participants for a Year unless (i) the Company's earnings per
               share for such Year are sufficient to cover dividends to
               stockholders, or (ii) the Company's net profits for such Year are
               at least Thirty-three and one-third Cents ($.33-1/3) per share.
               Notwithstanding the preceding provisions of this paragraph (b),
               the amount of Matching Employer Contribution credited to a
               Participant for a Year shall be reduced to the extent of any
               matching employer contributions made to or on behalf of the
               Participant for such Year under the Profit Sharing Plan for
               Employees of Trinity Industries, Inc. and Certain Affiliates."

     5. Section 4.02 of the Plan is hereby revised by amending paragraph (b)
thereof to be and read as follows:

"4.02   Participant Salary Reduction

                                   * * * * *

        (b)    A salary reduction agreement shall have been entered into by a
               Participant on or prior to commencement of Participation
               hereunder and shall remain in effect until terminated or amended
               by the Participant in accordance with the procedures set forth
               herein. Any amendment or termination of a salary reduction
               agreement shall not be effective until the first day of the
               Participant's taxable year immediately following the taxable year
               of the Participant in which an election so to amend or terminate
               is executed by the Participant and his Employer and must be
               received by the Corporate Benefits department of the Company at
               least fifteen (15) days prior to the end of the taxable year of
               execution. If a Participant terminates his salary reduction
               agreement as hereinabove provided, then he may elect to enter
               into another salary reduction agreement to be effective as of the
               first day of any of his taxable years following his taxable year
               in which such termination was first effective, provided that
               written notice of such election must be received by the Corporate
               Benefits department of

                                       4


<PAGE>   14




               the Company at least fifteen (15) days prior to such effective
               date."

     IN WITNESS WHEREOF, the Company has executed this Amendment No. 3 on the
6th day of December 1994, effective as of April 1, 1995.


                                   TRINITY INDUSTRIES, INC.

                                   By: /s/ JACK CUNNINGHAM
                                       -------------------------------------
                                   Title:      Vice President
                                          ----------------------------------

ATTEST:

/s/ NEIL O. SHOOP
- ----------------------------
<PAGE>   15
                               AMENDMENT NO. 4 TO
                        SUPPLEMENTAL PROFIT SHARING PLAN
                                FOR EMPLOYEES OF
                            TRINITY INDUSTRIES, INC.
                             AND CERTAIN AFFILIATES

         WHEREAS, TRINITY INDUSTRIES, INC. (the "Company") has heretofore
adopted the SUPPLEMENTAL PROFIT SHARING PLAN FOR EMPLOYEES OF TRINITY
INDUSTRIES, INC. AND CERTAIN AFFILIATES (the "Plan"); and

         WHEREAS, effective as of October 1, 1996, HALTER MARINE GROUP, INC.
("HMGI") and its subsidiaries (the "Participating Affiliates") have adopted the
Plan; and

         WHEREAS, effective as of January 1, 1997, HMGI and the Participating
Affiliates will withdraw from the Plan; and

         WHEREAS, effective as of January 1, 1997, the Company desires to
transfer all benefit obligations relating to Participants who are employees of
HMGI and the Participating Affiliates to a separate supplemental profit sharing
plan maintained by HMGI; and

         WHEREAS, pursuant to those provisions of the Plan permitting the
Company to amend the Plan from time to time, the Company desires to amend the
Plan in order to reflect the transactions described above.

         NOW THEREFORE, the Plan is hereby amended as follows:

         1. Effective January 1, 1997, new Article XI of the Plan is hereby
adopted to be and to read as follows:



<PAGE>   16


                                   "ARTICLE XI
                             WITHDRAWING EMPLOYERS

         In the event that a Participating Employer elects to discontinue or
revoke its participation in this Plan:

         (i)      the Company shall cause to be prepared a new plan (the
                  "Successor Plan") for the withdrawing Participating Employer,
                  which plan's terms shall be identical to the terms of this
                  Plan;

         (ii)     the Company shall transfer, deliver and assign any and all
                  benefit obligations under this Plan which relate to
                  Participants who are employees of the withdrawing
                  Participating Employer or its subsidiaries to the Successor
                  Plan; and

         (iii)    the withdrawing Participating Employer shall be deemed to have
                  consented to the adoption of the Successor Plan.

For purposes of this provision, the Successor Plan shall treat all benefit
obligations described under (ii) above as if they had accrued due to an
individual's service with the withdrawing Participating Employer. Subsequent to
the withdrawing Participating Employer's adoption of the Successor Plan, and the
transfer of benefit obligations from this Plan to the Successor Plan,
Participants whose benefits were transferred to the Successor Plan shall not be
entitled to receive any amounts from this Plan which relate to benefit
obligations which accrued prior to the transfer.

         IN WITNESS WHEREOF, the Company has caused this AMENDMENT NO. 4 TO THE
SUPPLEMENTAL PROFIT SHARING PLAN FOR EMPLOYEES OF TRINITY INDUSTRIES, INC. AND
CERTAIN AFFILIATES to be executed in its name and on its behalf this 13th day of
January, 1997, effective as noted above.

                                        TRINITY INDUSTRIES, INC.



                                        By: /s/ JOHN T. SANFORD
                                           --------------------------------
                                        Title:  Executive Vice President
                                              -----------------------------


ATTEST:

/s/ NEIL O. SHOOP
- -----------------------------------



                                      -2-

<PAGE>   17





THE STATE OF TEXAS            )
                              )
COUNTY OF DALLAS              )


         This instrument was acknowledged before me on the 13th day of January,
1997, by John T. Sanford, Executive Vice President of TRINITY INDUSTRIES, INC.,
a Delaware corporation, on behalf of said corporation.


                                             /s/ JANET L. SNYDER
[SEAL]                                       ----------------------------------
                                             Notary Public in and for
                                             the State of Texas


My Commission Expires:                      Printed Name of Notary:

   3-19-97                                  Janet L. Snyder
- -------------------------------             ----------------------------------







                                      -3-
<PAGE>   18

                               AMENDMENT NO. 5 TO
                        SUPPLEMENTAL PROFIT SHARING PLAN

         The Supplemental Profit Sharing Plan for Employees of Trinity
Industries, Inc. and Certain Affiliates, as amended from time to time (the
"Plan"), is hereby further amended, effective as of May 6, 1997, as set forth
below.

         Any term which is not defined below shall have the meaning set forth
for such term in the Plan.

         1. Section 9.05 of the Plan is hereby amended and restated to read as
follows:

     For purposes hereof, a "Change in Control" shall be deemed to have occurred
     if the event set forth in any one of the following paragraphs shall have
     occurred:

                  (I) any Person is or becomes the Beneficial Owner, directly or
         indirectly, of securities of the Company (not including in the
         securities beneficially owned by such Person any securities acquired
         directly from the Company or its affiliates) representing 30% or more
         of the combined voting power of the Company's then outstanding
         securities, excluding any Person who becomes such a Beneficial Owner
         in connection with a transaction described in clause (i) of paragraph
         (III) below; or

                  (II) the following individuals cease for any reason to
         constitute a majority of the number of directors then serving:
         individuals who, on May 6, 1997, constitute the Board and any new
         director (other than a director whose initial assumption of office is
         in connection with an actual or threatened election contest, including
         but not limited to a consent solicitation, relating to the election of
         directors of the Company) whose appointment or election by the Board or
         nomination for election by the Company's stockholders was approved or
         recommended by a vote of at least two-thirds (2/3) of the directors
         then still in office who either were directors on May 6, 1997, or
         whose appointment,


<PAGE>   19




         election or nomination for election was previously so approved or
         recommended; or

                  (III) there is consummated a merger or consolidation of the
         Company or any direct or indirect subsidiary of the Company with any
         other corporation, other than (i) a merger or consolidation which would
         result in the voting securities of the Company outstanding immediately
         prior to such merger or consolidation continuing to represent (either
         by remaining outstanding or by being converted into voting securities
         of the surviving entity or any parent thereof) at least 60% of the
         combined voting power of the securities of the Company or such
         surviving entity or any parent thereof outstanding immediately after
         such merger or consolidation, or (ii) a merger or consolidation
         effected to implement a recapitalization of the Company (or similar
         transaction) in which no Person is or becomes the Beneficial owner,
         directly or indirectly, of securities of the Company (not including in
         the securities Beneficially Owned by such Person any securities
         acquired directly from the Company or its Affiliates other than in
         connection with the acquisition by the Company or its affiliates of a
         business) representing 30% or more of the combined voting power of the
         Company's then outstanding securities; or

                  (IV) the stockholders of the Company approve a plan of
         complete liquidation or dissolution of the Company or there is
         consummated an agreement for the sale or disposition by the Company of
         all or substantially all of the Company's assets, other than a sale or
         disposition by the Company of all or substantially all of the Company's
         assets to an entity, at least 60% of the combined voting power of the
         voting securities of which are owned by stockholders of the Company in
         substantially the same proportions as their ownership of the Company
         immediately prior to such sale.





                                       2
<PAGE>   20


For purposes hereof:

         "Affiliate" shall have the meaning set forth in Rule 12b-2 promulgated
         under Section 12 of the Exchange Act.

         "Beneficial Owner" shall have the meaning set forth in Rule 13d-3 under
         the Exchange Act.

         "Exchange Act" shall mean the Securities Exchange Act of 1934, as
         amended from time to time.

         "Person" shall have the meaning given in Section 3(a)(9) of the
         Exchange Act, as modified and used in Sections 13(d) and 14(d) thereof,
         except that such term shall not include (i) the Company or any of its
         subsidiaries, (ii) a trustee or other fiduciary holding securities
         under an employee benefit plan of the Company or any of its Affiliates,
         (iii) an underwriter temporarily holding securities pursuant to an
         offering of such securities or (iv) a corporation owned, directly or
         indirectly, by the stockholders of the Company in substantially the
         same proportions as their ownership of stock of the Company.

         IN WITNESS WHEREOF, the Company has caused this Amendment to be
executed by a duly authorized officer of the Company as of the day and year
first above written.

                                             TRINITY INDUSTRIES, INC.


                                             By: /s/ W. RAY WALLACE
                                                -------------------------------

ATTEST:

/s/ NEIL O. SHOOP
- -----------------------------------




                                       3

<PAGE>   21
                             AMENDMENT NO. 6 TO THE
                        SUPPLEMENTAL PROFIT SHARING PLAN
                                FOR EMPLOYEES OF
                            TRINITY INDUSTRIES, INC.
                             AND CERTAIN AFFILIATES

     Pursuant to the provisions of Article X thereof, the Supplemental Profit
Sharing Plan for Employees of Trinity Industries, Inc. and Certain Affiliates
(the "Plan") is hereby amended effective as of April 1, 1999 in the following
respects only:

     FIRST: Section 2.01 of the Plan is hereby amended by deleting subsection(s)
therefrom in its entirety.

     SECOND: Section 2.01 of the Plan is hereby amended by restating subsections
(cc), (dd) and (ee) thereof in their entirety to read as follows:

          (cc) TRUST (or TRUST FUND): The fund known as the SUPPLEMENTAL PROFIT
               SHARING TRUST FOR EMPLOYEES OF TRINITY INDUSTRIES, INC. AND
               CERTAIN AFFILIATES or, with respect to periods on and after April
               1, 1999, known as the TRINITY INDUSTRIES, INC. SUPPLEMENTAL
               PROFIT SHARING AND DEFERRED DIRECTOR FEE TRUST, maintained in
               accordance with the terms of the trust agreement, as from time to
               time amended, which constitutes a part of this Plan.

          (dd) TRUSTEE: The corporation, individual or individuals appointed to
               administer the Trust in accordance with the agreement governing
               the Trust.

          (ee) VALUATION DATE: The last day of each calendar quarter and such
               other dates as the Committee in its discretion may prescribe.

     THIRD: Section 2.01 of the Plan is hereby amended by adding the following
to the end thereof:

          (gg) ACCOUNT: A Participant's Salary Reduction Contribution Account,
               Employer Contribution Account and/or Discretionary Contribution
               Account, as the case may be.

          (hh) DISCRETIONARY CONTRIBUTION ACCOUNT: The account maintained for a
               Participant on the books of his Employer to which is credited
               amounts allocated for the benefit of such Participant pursuant to
               Section 4.01(c) hereof and adjustments related thereto.

     FOURTH: Section 3.01 of the Plan is hereby amended by adding the following
to the end thereof:



<PAGE>   22


          Any provision of this Plan to the contrary notwithstanding, effective
          on and after the date of a Change in Control, the term "Participant"
          shall be limited to those individuals who satisfy the requirements set
          forth for participation in this Plan and who were Participants in this
          Plan as of the date immediately prior to the date of such Change in
          Control.

     FIFTH: Section 4.01 of the Plan is hereby amended by restating paragraph
(b) thereof in its entirety and by adding the following new paragraph (c) to the
end thereof:

          (b)  Additional Matching Contributions--As of the last day of each
               Year, each Employer shall credit an additional amount to the
               Employer Contribution Account of each of its Employees for whom
               an amount was credited pursuant to paragraph (a) of this Section
               4.01; provided, however, that no such additional amount shall be
               credited to the Account of an Employee for a Plan Year unless
               such Employee (i) has completed one year of Service prior to the
               first day of any calendar quarter during such Year, (ii) is in
               the employ of the Employer as of the last day of such Year (or,
               who, while employed by the Employer during the Year, terminated
               employment with the Employer on account of death, Disability or
               retirement, as defined by the Trinity Industries, Inc. Standard
               Pension Plan), and (iii) has made the maximum elective
               contributions for such Year permitted under the terms of the
               Profit Sharing Plan for Employees of Trinity Industries, Inc. and
               Certain Affiliates. Such additional amount shall be equal to the
               lesser of (1) or (2), where--

                    "(1)" is an amount equal to a percentage of that portion of
                    the Participant's salary reduction for such Year pursuant to
                    Section 4.02 hereof that does not exceed six percent (6%) of
                    his Compensation for such Year, based on his years of
                    Service as follows:

<TABLE>
<CAPTION>
                    Years of Service                     Additional Percentage
                    ----------------                     ---------------------
<S>                                                      <C>
                    Less than 1                                    0%
                    1 but less than 2                             25%
                    2 but less than 3                             30%
                    3 but less than 4                             35%
                    4 but less than 5                             40%
                    5 or more                                     50%
</TABLE>

                    and "(2)" is the amount that would have been credited to the
                    Participant pursuant to (1) above if the Participant's
                    salary reduction and Compensation for the Year had been
                    limited to the extent provided in, respectively, Sections
                    402(g) and 401(a)(17) of the Code (and rulings and
                    regulations issued thereunder);


                                       2
<PAGE>   23


                    provided, however, that no portions of a Participant's
                    salary reduction shall be taken into account for purposes of
                    this computation if, prior to the end of such Year, such
                    portion is withdrawn by, or otherwise distributed to, the
                    Participant or his Beneficiary, or if such portion
                    represents amounts credited pursuant to paragraph (a) of
                    this Section 4.01 prior to the first day of the calendar
                    quarter following the date on which such Participant
                    completes one year of Service; provided, further, that no
                    Matching Employer Contributions shall be credited to
                    Participants for a Year unless (i) the Company's earnings
                    per share for such Year are sufficient to cover dividends to
                    stockholders, or (ii) the Company's net profits for such
                    Year are at least Thirty-three and one third Cents
                    ($.33-1/3) per share. Notwithstanding the preceding
                    provisions of this paragraph (b), the amount of Matching
                    Employer Contribution credited to a Participant for a Year
                    shall be reduced to the extent of any matching employer
                    contributions made to or on behalf of the Participant for
                    such Year under the Profit Sharing Plan for Employees of
                    Trinity Industries, Inc. and Certain Affiliates.

               (c)  Discretionary Contributions--In addition to the
                    contributions described above, for each Year, an Employer
                    may, but shall not be required to, credit the Discretionary
                    Contribution Account of any one or more Participants in its
                    employ during such Year, with such amount as the Employer
                    may determine in its absolute discretion.

     SIXTH: Section 4.03 of the Plan is hereby amended by restatement in its
entirety to read as follows:

     4.03 Forfeitures

          If, upon a Severance from Service, a Participant is not entitled to a
          distribution of the entire balance in his Employer Contribution
          Account and/or Discretionary Contribution Account, then the amount to
          which the Participant is not entitled shall become a Forfeiture and
          shall be deducted from the Participant's Accounts at such time. The
          portion of the Participant's Accounts which is not a Forfeiture shall
          continue to be adjusted as provided in Section 5.02(a) until it is
          distributed in full. The Participant shall receive a distribution of
          the nonforfeitable portion of his Accounts pursuant to Section 6.01.

     SEVENTH: The third sentence of Section 5.01 of the Plan is hereby amended
by restatement in its entirety to read as follows:

          When appropriate, a Participant shall have two or three separate
          Accounts, an Employer Contribution Account, a Salary Reduction
          Contribution Account and a Discretionary Contribution Account.


                                       3

<PAGE>   24


     EIGHTH: Section 5.02 of the Plan is hereby amended by restating subsection
(a) thereof in its entirety to read as follows:

          (a)  Valuation Adjustments--As of each Valuation Date, the amount
               credited to a Participant's Accounts as of the preceding
               Valuation Date, less any distributions or Forfeitures with
               respect to such Accounts since such preceding Valuation Date,
               shall be adjusted by reference to the fluctuations in value,
               taking into account gain, loss, expenses and other adjustments,
               of the investment indices selected by the Participant for the
               investment adjustment of his or her Accounts, with such
               adjustments to be made in the manner prescribed by the Committee.
               Following such adjustment, the amounts credited to a
               Participant's Accounts shall be increased to take into account
               additional deferrals and contributions credited to such Accounts
               since the preceding Valuation Date. The Committee shall have sole
               and absolute discretion with respect to the number and type of
               investment indices made available for selection by Participants
               pursuant to this Section, the timing of Participant elections and
               the method by which adjustments are made. The designation of
               investment indices by the Committee shall be for the sole purpose
               of adjusting Accounts pursuant to this Section and this provision
               shall not obligate the Company or any of the Employers to invest
               or set aside any assets for the payment of benefits hereunder;
               provided, however, that the Company or an Employer may invest a
               portion of its general assets in investments, including
               investments which are the same as or similar to the investment
               indices designated by the Committee and selected by Participants,
               but any such investments shall remain part of the general assets
               of the Company or such Employer and shall not be deemed or
               construed to grant a property interest of any kind to any
               Participant, designated beneficiary or estate. The Committee
               shall notify the Participants of the investment indices available
               and the procedures for making and changing elections.

     NINTH: Section 5.02 of the Plan is hereby amended by adding the following
to the end thereof:

          (d)  Discretion Contributions--Any amount credited to a Participant by
               an Employer pursuant to Section 4.01 (c) during a Year shall be
               allocated to the Participant's Discretionary Contribution Account
               at the time determined by the Employer in its absolute
               discretion.

     TENTH: Section 6.01 of the Plan is hereby amended by restating paragraphs
(a) and (b) thereof in their entirety to read as follows:

          (a)  All payments with respect to a Participant's termination of
               employment for reasons other than death, Disability or retirement
               (as defined by the Trinity Industries, Inc. Standard Pension
               Plan) shall be made in the form of a lump


                                       4

<PAGE>   25
               sum. Payments made with respect to a Participant's termination of
               employment on account of death, Disability or retirement (as
               defined by the Trinity Industries, Inc. Standard Pension Plan),
               shall be made in such form as the Participant may elect from the
               following alternatives:

               (1)  In a lump sum;

               (2)  In annual periodic payments for a specified number of years,
                    not in excess of 20, with the first payment to be made in
                    the calendar quarter following the calendar quarter in which
                    the Participant terminates employment and subsequent
                    payments to be made in the same calendar quarter of each
                    succeeding year, where the payment made during each year
                    shall be in an amount equal to a fraction of the
                    Participant's Account balances as of the last day of the
                    calendar quarter preceding the calendar quarter in which the
                    payment is made, and where such fraction for each payment
                    shall be one (1) divided by the number of payments remaining
                    (including the current payment), and in which event the
                    unpaid balance shall continue to be adjusted as provided in
                    Section 5.02(a) until it is distributed in full; or

               (3)  In a combination of the methods specified in subparagraphs
                    (1) or (2) of this paragraph (a).

               Any election pursuant to this paragraph (a) must be made prior to
               the date on which such Employee's Participation hereunder first
               commences, with all payments to be made in the form of a lump sum
               in the absence of a timely election and, except as expressly
               provided otherwise in this Plan, shall be irrevocable; provided,
               however, that a Participant may change such election once during
               any Year, with the new election to be effective for a
               distribution arising from termination of employment of the
               Participant only if such distribution is to be made or commence
               more than 12 months after the date of the new election. The
               Committee shall, as of the last day of the calendar quarter
               within which the Participant terminates employment, certify to
               the Trustee or the Treasurer of the Employer, as applicable, the
               method of payment selected by the Participant.

          (b)  Notwithstanding the preceding, with respect to an Employee who
               became a Participant prior to April 1, 1999, such Participant's
               election with respect to the form of payment made pursuant to the
               provisions of the Plan in effect prior to April 1, 1999 shall
               remain in effect unless changed by the Participant in
               accordance with the provisions of paragraph (a) above.

    ELEVENTH: The last paragraph of Section 6.01 of the Plan is hereby amended
by restatement in its entirety to read as follows:



                                       5
<PAGE>   26


          If a Participant's termination of employment is attributable to his
          death, Disability or his retirement on or after age 65 ("normal
          retirement"), he shall be entitled to the entire amount credited to
          his Accounts. If a Participant's termination of employment is not
          attributable to his death, Disability or normal retirement and if such
          termination of employment occurs on or after a "Change in Control" (as
          defined in Section 9.05 hereof), he shall be entitled to the entire
          amount credited to his Accounts; or if such termination of employment
          occurs prior to a Change in Control, he shall be entitled to (i) the
          entire amount credited to his Salary Reduction Contribution Account,
          (ii) such portion of the amount credited to his Discretionary
          Contribution Account determined in accordance with the criteria
          established by his Employer in its absolute discretion at the time the
          Discretionary Contribution was credited to such Account, and (iii) a
          "vested percentage" of the entire amount credited to his Employer
          Contribution Account based on his years of Service, as follows:

<TABLE>
<CAPTION>
                                       Vested                    Forfeited
          Years of Service           Percentage                  Percentage
          ----------------           ----------                  ----------
<S>                                  <C>                         <C>
          Less than 1                     0%                         100%
          1 but less than 2              20%                          80%
          2 but less than 3              40%                          60%
          3 but less than 4              60%                          40%
          4 but less than 5              80%                          20%
          5 or more                     100%                           0%
</TABLE>

          For purposes of this Section 6.01, the "entire amount" credited to a
          Participant's Accounts at termination of employment shall include any
          amounts to be credited pursuant to Section 4.01 hereof for the Year of
          termination of employment but not yet allocated.

     TWELFTH: Section 6.03 of the Plan is hereby amended by restatement in its
entirety to read as follows:

     6.03 Plan Termination

          If the Plan is terminated pursuant to the provisions of Article X, the
          Committee shall cause the Trustee or the Treasurer of the Employer, as
          applicable, to pay to all Participants all of the amounts then
          standing to their credit, with payment to be made at the time and in
          the manner specified in Section 6.01 hereof; provided, however, that
          if the Plan is terminated on or after a Change in Control, payment
          shall be made in the form of lump sums which shall be paid no later
          than 60 days following the end of the quarter in which the Plan
          termination occurs or, if elected by the Participant at least one full
          year prior to the date payment otherwise would have been made upon
          termination of the Plan, payment may be made in the form of five
          annual installments, with the first installment to be made no later
          than 60 days following the


                                       6
<PAGE>   27


          end of the quarter in which the termination occurs and the remaining
          installments to be paid no later than the last day of February of the
          next four successive calendar years. Each installment shall be in an
          amount equal to a fraction of the total balance in the Participant's
          Accounts as of the end of the immediately preceding calendar quarter,
          where the fraction shall be one (1) divided by the number of
          installments remaining to be paid (including the current installment),
          and where the unpaid balance shall continue to be adjusted as provided
          in Section 5.02(a) until it is distributed in full.

     THIRTEENTH: Section 6.05 of the Plan is hereby amended by restatement in
its entirety to read as follows:

     6.05 In-Service Distributions

          No amounts credited to a Participant's Accounts shall be distributed
          to or on behalf of the Participant prior to the occurrence of one of
          the events specified in the provisions of this Article VI except as
          follows:

          (a)  A distribution may be made to or on behalf of the Participant to
               the extent that the Committee, in its sole discretion, consents
               to such distribution upon a showing by the Participant of an
               unforeseeable emergency. For this purpose, an "unforeseeable
               emergency" is defined as severe financial hardship to the
               Participant resulting from a sudden and unexpected illness or
               accident of the Participant or of a dependent of the Participant,
               loss of the Participant's property due to casualty, or other
               similar extraordinary and unforeseeable circumstances arising as
               a result of events beyond the control of the Participant. The
               circumstances that will constitute an unforeseeable emergency
               will depend on the facts of each case, but payment may not be
               made to the extent that such hardship is or may be relieved--(i)
               through reimbursement or compensation by insurance or otherwise,
               (ii) by liquidation of the Participant's assets, to the extent
               that the liquidation of such assets would not itself cause severe
               financial hardship, or (iii) by cessation of deferrals under the
               Plan.

          (b)  A lump sum distribution may be made to or on behalf of a
               Participant at any time, but no more often than once during any
               Year, of such amount equal to at least 25% of the Participant's
               vested Account balances as the Participant may request; provided,
               however, that (i) an amount equal to 10% of the amount
               distributed from the Accounts of a Participant pursuant to this
               paragraph shall be forfeited from the Accounts at the time of the
               distribution so that the amount distributed to the Participant
               pursuant to this paragraph shall never exceed the amount of the
               Participant's vested Account balances minus the amount so
               forfeited, and (ii) the salary reduction agreement of any
               Participant who receives a distribution pursuant to this
               paragraph shall be suspended for one full year from the date of
               such distribution.


                                               7
<PAGE>   28

         FOURTEENTH: Article VI of the Plan is hereby amended by adding the
following new Section 6.06 to end thereof:

     6.06 Designated Distributions

          Prior to the beginning of a calendar year, a Participant may elect
          that all or any portion of the amount of any salary reduction to be
          credited to the Participant's Account during such calendar year, be
          distributed to or on behalf of the Participant in the form of a lump
          sum in a subsequent calendar year designated by the Participant in the
          election which subsequent calendar year shall not be earlier than the
          third calendar year following the calendar year for which the election
          is made. The distribution shall be made no later than March 31 of the
          designated year. In the event of the Participant's termination of
          employment for any reason prior to the designated year, the election
          shall be void and of no effect.

     FIFTEENTH: Article IX of the Plan is hereby amended by adding the following
three Sections to the end thereof:

     9.07 Claims Procedure/Arbitration

          If any person (hereinafter called the "Claimant") feels that he or she
          is being denied a benefit to which he or she is entitled under this
          Plan, such Claimant may file a written claim for said benefit with the
          Committee. Within sixty days following the receipt of such claim the
          Committee shall determine and notify the Claimant as to whether he or
          she is entitled to such benefit. Such notification shall be in writing
          and, if denying the claim for benefit, shall set forth the specific
          reason or reasons for the denial, make specific reference to the
          pertinent provisions of this Plan, and advise the Claimant that he or
          she may, within sixty days following the receipt of such notice, in
          writing request to appear before the Committee or its designated
          representative for a hearing to review such denial. Any such hearing
          shall be scheduled at the mutual convenience of the Committee or its
          designated representative and the Claimant, and at any such hearing
          the Claimant and/or his or her duly authorized representative may
          examine any relevant documents and present evidence and arguments to
          support the granting of the benefit being claimed. The final decision
          of the Committee with respect to the claim being reviewed shall be
          made within sixty days following the hearing thereon, and the
          Committee shall in writing notify the Claimant of said final decision,
          again specifying the reasons therefor and the pertinent provisions of
          this Plan upon which said final decision is based. The final decision
          of the Committee shall be conclusive and binding upon all parties
          having or claiming to have an interest in the matter being reviewed.

          Any dispute or controversy arising out of, or relating to, the payment
          of benefits pursuant to this Plan shall be settled by arbitration in
          Dallas, Texas (or, if applicable law requires some other forum, then
          such other forum) in accordance with the rules then obtaining of the
          American Arbitration Association. The District Court of Dallas


                                       8

<PAGE>   29

          County, Texas or, as the case may be, the United States District Court
          for the Northern District of Texas shall have jurisdiction for all
          purposes in connection with any such arbitration. Any process or
          notice of motion or other application to either of said courts, and
          any paper in connection with arbitration, may be served by certified
          mail, return receipt requested, or by personal service or in such
          other manner as may be permissible under the rules of the applicable
          court or arbitration tribunal, provided a reasonable time for
          appearance is allowed. Arbitration proceedings must be instituted
          within one year after the claimed breach occurred, and the failure to
          institute arbitration proceedings within such period shall constitute
          an absolute bar to the institution of any proceedings, and a waiver of
          all claims, with respect to such breach.

     9.08 Reimbursement of Costs

          In the event that a dispute arises between a Participant or
          Beneficiary and the Company or other Employer liable for payments with
          respect to the payment of benefits hereunder and the Participant or
          Beneficiary is successful in pursuing a benefit to which he or she is
          entitled under the terms of the Plan against the Company or such other
          Employer or any other party in the course of litigation or otherwise
          and incurs attorneys' fees, expenses and costs in connection
          therewith, the Company or such other Employer against whom the
          Participant or beneficiary has been successful in pursuing a benefit
          under this Plan shall reimburse the Participant or beneficiary for the
          full amount of any such attorneys' fees, expenses and costs.

     9.09 Acceleration of Payment

          In the event that the Internal Revenue Service formally assesses a
          deficiency against a Participant on the grounds that an amount
          credited to such Participant's Accounts under this Plan is subject to
          federal income tax (the "Reclassified Amount") earlier than the time
          payment otherwise would be made to the Participant pursuant to this
          Plan, then the Committee shall direct the Employer maintaining such
          Participant's Accounts to pay to such Participant and deduct from such
          Account the Reclassified Amount.

     SIXTEENTH: Article X of the Plan is hereby amended by adding the following
to the end thereof:

          Any provision of this Plan to the contrary notwithstanding, no action
          to modify, amend, supplement, suspend or terminate the Plan on or
          after the date of a Change in Control shall be effective without the
          consent of a majority of the Participants in the Plan at the time of
          such action.

     SEVENTEENTH: Article XI of the Plan is hereby amended by restatement in its
entirety to read as follows:


                                       9
<PAGE>   30


                                   ARTICLE XI
               WITHDRAWING EMPLOYERS; TRANSFER TO SUCCESSOR PLAN

    11.01 Withdrawing Employers

          In the event that a Participating Employer elects to discontinue or
          revoke its participation in this Plan:

     (a)  the Company shall cause to be prepared a new plan (the "Successor
          Plan") for the withdrawing Participating Employer, the terms of which
          shall be identical to the terms of this Plan;

     (b)  the Company shall transfer, deliver and assign any and all benefit
          obligations under this Plan which relate to Participants who are
          employees of the withdrawing Participating Employer or its
          subsidiaries to the Successor Plan; and

     (c)  the withdrawing Participating Employer shall be deemed to have
          consented to the adoption of the Successor Plan.

     For purposes of this provision, the Successor Plan shall treat all benefit
     obligations described under (b) above as if they had accrued due to an
     individual's service with the withdrawing Participating Employer.
     Subsequent to the withdrawing Participating Employer's adoption of the
     Successor Plan and the transfer of benefit obligations from this Plan to
     the Successor Plan, Participants whose benefits were transferred to the
     Successor Plan shall not be entitled to receive any amounts from this Plan
     which relate to benefit obligations which accrued prior to the transfer.

    11.02 Transfer to Successor Plan

          Any provision of this Plan to the contrary notwithstanding, in the
          event that:

     (a)  the employment of a Participant with the Company or other
          Participating Employer is terminated in connection with the sale,
          spin-off or other disposition of a direct or indirect subsidiary of
          the Company or a sale or other disposition of assets of the Company or
          the assets of a direct or indirect subsidiary of the Company (the
          "Transaction"), and

     (b)  in connection with the Transaction, such terminated Participant
          becomes employed by the subsidiary that is sold, spun-off or otherwise
          disposed of, the purchaser of the subsidiary or assets or other
          surviving entity in the Transaction, as the case may be, or an
          affiliate thereof, (the "Successor Employer"), and


                                       10

<PAGE>   31



     (c)  in connection with and effective as of or prior to the closing of the
          Transaction, the Successor Employer establishes a new plan, the terms
          of which are substantially identical to the terms of this Plan and
          which treat all benefit obligations which relate to the Participant
          (including those transferred to the Successor Plan pursuant to the
          provisions of this Section) as if they had accrued due to the
          Participant's service with the Successor Employer (the "Successor
          Plan"), and a new rabbi trust, the terms of which are substantially
          identical to the terms of the Trust (the "Successor Trust"),

     then the Participant shall not be entitled to a distribution of benefits
     from this Plan on account of such termination of employment, and the
     Company or other Participating Employer which formerly employed the
     Participant and which maintains an Account or Accounts for such Participant
     under this Plan shall transfer, deliver and assign to the Successor Plan
     and Successor Employer as of the date the Participant becomes employed by
     the Successor Employer any and all benefit obligations under this Plan
     which relate to the Participant, and effective with and subsequent to the
     adoption of the Successor Plan by the Successor Employer and the transfer
     of the Participant's benefit obligations from this Plan to the Successor
     Plan, the Participant whose benefits were transferred to the Successor Plan
     shall not be entitled to receive any amounts from this Plan which relate to
     benefit obligations which accrued prior to the transfer. The preceding
     provisions to the contrary notwithstanding, the provisions of this Section
     11.02 shall not be effective for Transactions that occur on or after the
     date of a Change in Control without the written consent of a majority of
     the Participants in the Plan at such time.

IN WITNESS WHEREOF, this Amendment has been executed this 31st day of March,
1999.

                                             TRINITY INDUSTRIES, INC.

                                             By: /s/ JACK CUNNINGHAM
                                                 ------------------------------
                                                 Title: Vice President


                                       11
<PAGE>   32
                             AMENDMENT NO. 7 TO THE
                        SUPPLEMENTAL PROFIT SHARING PLAN
                                FOR EMPLOYEES OF
                            TRINITY INDUSTRIES, INC.
                             AND CERTAIN AFFILIATES

     Pursuant to the provisions of Article X thereof, the Supplemental Profit
Sharing Plan for Employees of Trinity Industries, Inc. and Certain Affiliates
(the "Plan") is hereby amended effective as of April 1, 1999 (except as
otherwise noted herein) in the following respects only:

     FIRST: Section 2.01 of the Plan is hereby amended by deleting subsection(s)
therefrom in its entirety.

     SECOND: Section 2.01 of the Plan is hereby amended by restating subsections
(cc), (dd) and (ee) thereof in their entirety to read as follows:

     (cc) TRUST (or TRUST FUND): The fund known as the SUPPLEMENTAL PROFIT
          SHARING TRUST FOR EMPLOYEES OF TRINITY INDUSTRIES, INC. AND CERTAIN
          AFFILIATES or, with respect to periods on and after April 1, 1999,
          known as the TRINITY INDUSTRIES, INC. SUPPLEMENTAL PROFIT SHARING AND
          DEFERRED DIRECTOR FEE TRUST, maintained in accordance with the terms
          of the trust agreement, as from time to time amended, which
          constitutes a part of this Plan.

     (dd) TRUSTEE: The corporation, individual or individuals appointed to
          administer the Trust in accordance with the agreement governing the
          Trust.

     (ee) VALUATION DATE: The last day of each calendar quarter and such other
          dates as the Committee in its discretion may prescribe.

     THIRD: Section 2.01 of the Plan is hereby amended by adding the following
to the end thereof:

     (gg) ACCOUNT: A Participant's Salary Reduction Contribution Account,
          Employer Contribution Account and/or Discretionary Contribution
          Account, as the case may be.

     (hh) DISCRETIONARY CONTRIBUTION ACCOUNT: The account maintained for a
          Participant on the books of his Employer to which is credited amounts
          allocated for the benefit of such Participant pursuant to Section
          4.01(c) hereof and adjustments related thereto.


                                       1
<PAGE>   33

     FOURTH: Section 3.01 of the Plan is hereby amended by adding the following
to the end thereof:

Any provision of this Plan to the contrary notwithstanding, effective on and
after the date of a Change in Control, the term "Participant" shall be limited
to those individuals who satisfy the requirements set forth for participation in
this Plan and who were Participants in this Plan as of the date immediately
prior to the date of such Change in Control.

     FIFTH: Section 4.01 of the Plan is hereby amended by restating paragraph
(b) thereof in its entirety and by adding the following new paragraph (c) to the
end thereof, with such amended and added provisions to be effective April 1,
1999, except for restated paragraph (b)(1), which shall be effective April 1,
1998:

          (b)  Additional Matching Contribution--For each Year, each Employer
               shall credit an additional amount to each of its Employees for
               whom an amount was credited pursuant to paragraph (a) of this
               Section 4.01; provided, however, that no such additional amount
               shall be credited prior to the date on which such Employee
               completes one (1) year of Service. Such additional amount, when
               added to the Forfeitures which have become available for
               application as of the end of the Year pursuant to Section 4.03
               hereof, shall be equal to the lesser of (1) or (2), where--(1) is
               a percentage of that portion of the Participant's salary
               reduction for such Year pursuant to Section 4.02 hereof which
               does not exceed six percent (6%) of his Compensation for such
               Year, based on his years of Service as follows:

<TABLE>
<CAPTION>
                     Years of Service                Applicable Percentage
                     ----------------                ---------------------
<S>                                                  <C>
                     Less than 1                               0%
                     1 but less than 2                        25%
                     2 but less than 3                        30%
                     3 but less than 4                        35%
                     4 but less than 5                        40%
                     5 or more                                50%
</TABLE>

               and (2) is the amount that would have been credited to the
               Participant pursuant to (1) above if the Participant's salary
               reduction and Compensation for the Year had been limited to the
               extent provided in, respectively, Sections 402(g) and 401(a)(17)
               of the Code (and rulings and regulations issued thereunder);
               provided, however, that, except in the case of a Participant who
               "retires" (as defined in the Trinity Industries, Inc. Standard
               Pension Plan), dies or incurs a Disability, no portion of a
               Participant's salary reduction shall be taken into account for
               purposes of this computation if, prior to the end of such Year,
               such portion is withdrawn by, or otherwise distributed to, the
               Participant or his


                                       2
<PAGE>   34


               Beneficiary; provided, further, that no Matching Employer
               Contributions shall be credited to Participants for a Year
               unless (i) the Company's earnings per share for such Year are
               sufficient to cover dividends to stockholders, or (ii) the
               Company's net profits for such Year are at least Thirty-Three and
               one-third Cents ($.33-1/3) per share. Notwithstanding the
               preceding provisions of subparagraph (1) of this paragraph (b),
               (i) the amount of Matching Employer Contributions, determined
               without regard to any allocations of income or loss under Section
               5.02, credited to a Participant's Account shall not be less than
               the amount credited immediately prior to April 1, 1998; and (ii)
               in no event will the amount of Matching Employer Contribution
               credited to a Participant for a Year under this Plan when
               combined with any matching contribution credited to the
               Participant under the Profit Sharing Plan for Employees of
               Trinity Industries, Inc. and Certain Affiliates exceed the amount
               of matching contribution that would have been credited under such
               Profit Sharing Plan determined as if all Salary Reduction
               Contributions hereunder had been made under such Profit Sharing
               Plan.

          (c)  Discretionary Contributions--In addition to the contributions
               described above, for each Year an Employer may, but shall not be
               required to, credit the Discretionary Contribution Account of any
               one or more Participants in its employ during such Year with such
               amount as the Employer may determine in its absolute discretion.

     SIXTH: Section 4.03 of the Plan is hereby amended by restatement in its
entirety to read as follows:

     4.03 Forfeitures

          If, upon a Severance from Service, a Participant is not entitled to a
          distribution of the entire balance in his Employer Contribution
          Account and/or Discretionary Contribution Account, then the amount to
          which the Participant is not entitled shall become a Forfeiture and
          shall be deducted from the Participant's Accounts at such time. The
          portion of the Participant's Accounts which is not a Forfeiture shall
          continue to be adjusted as provided in Section 5.02(a) until it is
          distributed in full. The Participant shall receive a distribution of
          the nonforfeitable portion of his Accounts pursuant to Section 6.01.

     SEVENTH: The third sentence of Section 5.01 of the Plan is hereby amended
by restatement in its entirety to read as follows:

          When appropriate, a Participant shall have two or three separate
          Accounts, an Employer Contribution Account, a Salary Reduction
          Contribution Account and a Discretionary Contribution Account.


                                       3
<PAGE>   35


     EIGHTH: Section 5.02 of the Plan is hereby amended by restating subsection
(a) thereof in its entirety to read as follows:

          (a)  Valuation Adjustments--As of each Valuation Date, the amount
               credited to a Participant's Accounts as of the preceding
               Valuation Date, less any distributions or Forfeitures with
               respect to such Accounts since such preceding Valuation Date,
               shall be adjusted by reference to the fluctuations in value,
               taking into account gain, loss, expenses and other adjustments,
               of the investment indices selected by the Participant for the
               investment adjustment of his or her Accounts, with such
               adjustments to be made in the manner prescribed by the Committee.
               Following such adjustment, the amounts credited to a
               Participant's Accounts shall be increased to take into account
               additional deferrals and contributions credited to such Accounts
               since the preceding Valuation Date. The Committee shall have sole
               and absolute discretion with respect to the number and type of
               investment indices made available for selection by Participants
               pursuant to this Section, the timing of Participant elections and
               the method by which adjustments are made. The designation of
               investment indices by the Committee shall be for the sole purpose
               of adjusting Accounts pursuant to this Section and this provision
               shall not obligate the Company or any of the Employers to invest
               or set aside any assets for the payment of benefits hereunder;
               provided, however, that the Company or an Employer may invest a
               portion of its general assets in investments, including
               investments which are the same as or similar to the investment
               indices designated by the Committee and selected by Participants,
               but any such investments shall remain part of the general assets
               of the Company or such Employer and shall not be deemed or
               construed to grant a property interest of any kind to any
               Participant, designated beneficiary or estate. The Committee
               shall notify the Participants of the investment indices available
               and the procedures for making and changing elections.

     NINTH: Section 5.02 of the Plan is hereby amended by adding the following
to the end thereof:

          (d)  Discretionary Contributions--Any amount credited to a Participant
               by an Employer pursuant to Section 4.01(c) during a Year shall be
               allocated to the Participant's Discretionary Contribution Account
               at the time determined by the Employer in its absolute
               discretion.

     TENTH: Section 6.01 of the Plan is hereby amended by restating paragraphs
(a) and (b) thereof in their entirety to read as follows:

          (a)  All payments with respect to a Participant's termination of
               employment for reasons other than death, Disability or retirement
               (as defined by the Trinity Industries, Inc. Standard Pension
               Plan) shall be made in the form of a lump


                                       4
<PAGE>   36


               sum. Payments made with respect to a Participant's termination of
               employment on account of death, Disability or retirement (as
               defined by the Trinity Industries, Inc. Standard Pension Plan),
               shall be made in such form as the Participant may elect from the
               following alternatives:

               (1)  In a lump sum;

               (2)  In annual periodic payments for a specified number of years,
                    not in excess of 20, with the first payment to be made in
                    the calendar quarter following the calendar quarter in which
                    the Participant terminates employment and subsequent
                    payments to be made in the same calendar quarter of each
                    succeeding year, where the payment made during each year
                    shall be in an amount equal to a fraction of the
                    Participant's Account balances as of the last day of the
                    calendar quarter preceding the calendar quarter in which the
                    payment is made, and where such fraction for each payment
                    shall be one (1) divided by the number of payments remaining
                    (including the current payment), and in which event the
                    unpaid balance shall continue to be adjusted as provided in
                    Section 5.02(a) until it is distributed in full; or

               (3)  In a combination of the methods specified in subparagraphs
                    (1) or (2) of this paragraph (a).

               Any election pursuant to this paragraph (a) must be made prior to
               the date on which such Employee's Participation hereunder first
               commences, with all payments to be made in the form of a lump sum
               in the absence of a timely election and, except as expressly
               provided otherwise in this Plan, shall be irrevocable; provided,
               however, that a Participant may change such election once during
               any Year, with the new election to be effective for a
               distribution arising from termination of employment of the
               Participant only if such distribution is to be made or commence
               more than 12 months after the date of the new election. The
               Committee shall, as of the last day of the calendar quarter
               within which the Participant terminates employment, certify to
               the Trustee or the Treasurer of the Employer, as applicable, the
               method of payment selected by the Participant.

          (b)  Notwithstanding the preceding, with respect to an Employee who
               became a Participant prior to April 1, 1999, such Participant's
               election with respect to the form of payment made pursuant to the
               provisions of the Plan in effect prior to April 1, 1999 shall
               remain in effect unless changed by the Participant in accordance
               with the provisions of paragraph (a) above.

     ELEVENTH: The last paragraph of Section 6.01 of the Plan is hereby amended
by restatement in its entirety to read as follows:


                                       5
<PAGE>   37


               If a Participant's termination of employment is attributable to
               his death, Disability or his retirement on or after age 65
               ("normal retirement"), he shall be entitled to the entire amount
               credited to his Accounts. If a Participant's termination of
               employment is not attributable to his death, Disability or normal
               retirement and if such termination of employment occurs on or
               after a "Change in Control" (as defined in Section 9.05 hereof),
               he shall be entitled to the entire amount credited to his
               Accounts; or if such termination of employment occurs prior to a
               Change in Control, he shall be entitled to (i) the entire amount
               credited to his Salary Reduction Contribution Account, (ii) such
               portion of the amount credited to his Discretionary Contribution
               Account determined in accordance with the criteria established by
               his Employer in its absolute discretion at the time the
               Discretionary Contribution was credited to such Account, and
               (iii) a "vested percentage" of the entire amount credited to his
               Employer Contribution Account based on his years of Service, as
               follows:

<TABLE>
<CAPTION>
                                          Vested               Forfeited
               Years of Service         Percentage             Percentage
               ----------------         ----------             ----------
<S>                                     <C>                    <C>
               Less than 1                    0%                   100%
               1 but less than 2             20%                    80%
               2 but less than 3             40%                    60%
               3 but less than 4             60%                    40%
               4 but less than 5             80%                    20%
               5 or more                    100%                     0%
</TABLE>

               For purposes of this Section 6.01, the "entire amount" credited
               to a Participant's Accounts at termination of employment shall
               include any amounts to be credited pursuant to Section 4.01
               hereof for the Year of termination of employment but not yet
               allocated.

     TWELFTH: Section 6.03 of the Plan is hereby amended by restatement in its
entirety to read as follows:

     6.03 Plan Termination

          If the Plan is terminated pursuant to the provisions of Article X, the
          Committee shall cause the Trustee or the Treasurer of the Employer, as
          applicable, to pay to all Participants all of the amounts then
          standing to their credit, with payment to be made at the time and in
          the manner specified in Section 6.01 hereof; provided, however, that
          if the Plan is terminated on or after a Change in Control, payment
          shall be made in the form of lump sums which shall be paid no later
          than 60 days following the end of the quarter in which the Plan
          termination occurs or, if elected by the Participant at least one full
          year prior to the date payment otherwise would have been made upon
          termination of the Plan, payment may be made in the form of five
          annual installments, with the first installment to be made no later
          than 60 days following the


                                       6
<PAGE>   38


          end of the quarter in which the termination occurs and the remaining
          installments to be paid no later than the last day of February of the
          next four successive calendar years. Each installment shall be in an
          amount equal to a fraction of the total balance in the Participant's
          Accounts as of the end of the immediately preceding calendar quarter,
          where the fraction shall be one (1) divided by the number of
          installments remaining to be paid (including the current installment),
          and where the unpaid balance shall continue to be adjusted as provided
          in Section 5.02(a) until it is distributed in full.

     THIRTEENTH: Section 6.05 of the Plan is hereby amended by restatement in
its entirety to read as follows:

     6.05 In-Service Distributions

          No amounts credited to a Participant's Accounts shall be distributed
          to or on behalf of the Participant prior to the occurrence of one of
          the events specified in the provisions of this Article VI except as
          follows:

          (a)  A distribution may be made to or on behalf of the Participant to
               the extent that the Committee, in its sole discretion, consents
               to such distribution upon a showing by the Participant of an
               unforeseeable emergency. For this purpose, an "unforeseeable
               emergency" is defined as severe financial hardship to the
               Participant resulting from a sudden and unexpected illness or
               accident of the Participant or of a dependent of the Participant,
               loss of the Participant's property due to casualty, or other
               similar extraordinary and unforeseeable circumstances arising as
               a result of events beyond the control of the Participant. The
               circumstances that will constitute an unforeseeable emergency
               will depend on the facts of each case, but payment may not be
               made to the extent that such hardship is or may be relieved--(i)
               through reimbursement or compensation by insurance or otherwise,
               (ii) by liquidation of the Participant's assets, to the extent
               that the liquidation of such assets would not itself cause severe
               financial hardship, or (iii) by cessation of deferrals under the
               Plan.

          (b)  A lump sum distribution may be made to or on behalf of a
               Participant at any time, but no more often than once during any
               Year, of such amount equal to at least 25% of the Participant's
               vested Account balances as the Participant may request; provided,
               however, that (i) an amount equal to 10% of the amount
               distributed from the Accounts of a Participant pursuant to this
               paragraph shall be forfeited from the Accounts at the time of the
               distribution so that the amount distributed to the Participant
               pursuant to this paragraph shall never exceed the amount of the
               Participant's vested Account balances minus the amount so
               forfeited, and (ii) the salary reduction agreement of any
               Participant who receives a distribution pursuant to this
               paragraph shall be suspended for one full year from the date of
               such distribution.


                                       7
<PAGE>   39


     FOURTEENTH: Article VI of the Plan is hereby amended by adding the
following new Section 6.06 to end thereof.

     6.06 Designated Distributions

          Prior to the beginning of a calendar year, a Participant may elect
          that all or any portion of the amount of any salary reduction to be
          credited to the Participant's Account during such calendar year, be
          distributed to or on behalf of the Participant in the form of a lump
          sum in a subsequent calendar year designated by the Participant in the
          election which subsequent calendar year shall not be earlier than the
          third calendar year following the calendar year for which the election
          is made. The distribution shall be made no later than March 31 of the
          designated year. In the event of the Participant's termination of
          employment for any reason prior to the designated year, the election
          shall be void and of no effect.

     FIFTEENTH: Article IX of the Plan is hereby amended by adding the following
three Sections to the end thereof:

     9.07 Claims Procedure/Arbitration

          If any person (hereinafter called the "Claimant") feels that he or she
          is being denied a benefit to which he or she is entitled under this
          Plan, such Claimant may file a written claim for said benefit with the
          Committee. Within sixty days following the receipt of such claim the
          Committee shall determine and notify the Claimant as to whether he or
          she is entitled to such benefit. Such notification shall be in writing
          and, if denying the claim for benefit, shall set forth the specific
          reason or reasons for the denial, make specific reference to the
          pertinent provisions of this Plan, and advise the Claimant that he or
          she may, within sixty days following the receipt of such notice, in
          writing request to appear before the Committee or its designated
          representative for a hearing to review such denial. Any such hearing
          shall be scheduled at the mutual convenience of the Committee or its
          designated representative and the Claimant, and at any such hearing
          the Claimant and/or his or her duly authorized representative may
          examine any relevant documents and present evidence and arguments to
          support the granting of the benefit being claimed. The final decision
          of the Committee with respect to the claim being reviewed shall be
          made within sixty days following the hearing thereon, and the
          Committee shall in writing notify the Claimant of said final decision,
          again specifying the reasons therefor and the pertinent provisions of
          this Plan upon which said final decision is based. The final decision
          of the Committee shall be conclusive and binding upon all parties
          having or claiming to have an interest in the matter being reviewed.

          Any dispute or controversy arising out of, or relating to, the payment
          of benefits pursuant to this Plan shall be settled by arbitration in
          Dallas, Texas (or, if applicable law requires some other forum, then
          such other forum) in accordance with the rules then obtaining of the
          American Arbitration Association. The District Court of Dallas


                                       8
<PAGE>   40


          County, Texas or, as the case may be, the United States District Court
          for the Northern District of Texas shall have jurisdiction for all
          purposes in connection with any such arbitration. Any process or
          notice of motion or other application to either of said courts, and
          any paper in connection with arbitration, may be served by certified
          mail, return receipt requested, or by personal service or in such
          other manner as may be permissible under the rules of the applicable
          court or arbitration tribunal, provided a reasonable time for
          appearance is allowed. Arbitration proceedings must be instituted
          within one year after the claimed breach occurred, and the failure to
          institute arbitration proceedings within such period shall constitute
          an absolute bar to the institution of any proceedings, and a waiver of
          all claims, with respect to such breach.

     9.08 Reimbursement of Costs

          In the event that a dispute arises between a Participant or
          Beneficiary and the Company or other Employer liable for payments with
          respect to the payment of benefits hereunder and the Participant or
          Beneficiary is successful in pursuing a benefit to which he or she is
          entitled under the terms of the Plan against the Company or such other
          Employer or any other party in the course of litigation or otherwise
          and incurs attorneys' fees, expenses and costs in connection
          therewith, the Company or such other Employer against whom the
          Participant or beneficiary has been successful in pursuing a benefit
          under this Plan shall reimburse the Participant or beneficiary for the
          full amount of any such attorneys' fees, expenses and costs.

     9.09 Acceleration of Payment

          In the event that the Internal Revenue Service formally assesses a
          deficiency against a Participant on the grounds that an amount
          credited to such Participant's Accounts under this Plan is subject to
          federal income tax (the "Reclassified Amount") earlier than the time
          payment otherwise would be made to the Participant pursuant to this
          Plan, then the Committee shall direct the Employer maintaining such
          Participant's Accounts to pay to such Participant and deduct from such
          Account the Reclassified Amount.

     SIXTEENTH: Article X of the Plan is hereby amended by adding the following
to the end thereof:

          Any provision of this Plan to the contrary notwithstanding, no action
          to modify, amend, supplement, suspend or terminate the Plan on or
          after the date of a Change in Control shall be effective without the
          consent of a majority of the Participants in the Plan at the time of
          such action.

     SEVENTEENTH: Article XI of the Plan is hereby amended by restatement in its
entirety to read as follows:


                                       9
<PAGE>   41


                                   ARTICLE XI
               WITHDRAWING EMPLOYERS; TRANSFER TO SUCCESSOR PLAN

    11.01 Withdrawing Employers

          In the event that a Participating Employer elects to discontinue or
          revoke its participation in this Plan:

          (a)  the Company shall cause to be prepared a new plan (the "Successor
               Plan") for the withdrawing Participating Employer, the terms of
               which shall be identical to the terms of this Plan;

          (b)  the Company shall transfer, deliver and assign any and all
               benefit obligations under this Plan which relate to Participants
               who are employees of the withdrawing Participating Employer or
               its subsidiaries to the Successor Plan; and

          (c)  the withdrawing Participating Employer shall be deemed to have
               consented to the adoption of the Successor Plan.

          For purposes of this provision, the Successor Plan shall treat all
          benefit obligations described under (b) above as if they had accrued
          due to an individual's service with the withdrawing Participating
          Employer. Subsequent to the withdrawing Participating Employer's
          adoption of the Successor Plan and the transfer of benefit obligations
          from this Plan to the Successor Plan, Participants whose benefits were
          transferred to the Successor Plan shall not be entitled to receive any
          amounts from this Plan which relate to benefit obligations which
          accrued prior to the transfer.

    11.02 Transfer to Successor Plan

          Any provision of this Plan to the contrary notwithstanding, in the
          event that:

          (a)  the employment of a Participant with the Company or other
               Participating Employer is terminated in connection with the sale,
               spin-off or other disposition of a direct or indirect subsidiary
               of the Company or a sale or other disposition of assets of the
               Company or the assets of a direct or indirect subsidiary of the
               Company (the "Transaction"), and

          (b)  in connection with the Transaction, such terminated Participant
               becomes employed by the subsidiary that is sold, spun-off or
               otherwise disposed of, the purchaser of the subsidiary or assets
               or other surviving entity in the Transaction, as the case may be,
               or an affiliate thereof, (the "Successor Employer"), and


                                       10
<PAGE>   42


          (c)  in connection with and effective as of or prior to the closing of
               the Transaction, the Successor Employer establishes a new plan,
               the terms of which are substantially identical to the terms of
               this Plan and which treat all benefit obligations which relate to
               the Participant (including those transferred to the Successor
               Plan pursuant to the provisions of this Section) as if they had
               accrued due to the Participant's service with the Successor
               Employer (the "Successor Plan"), and a new rabbi trust, the terms
               of which are substantially identical to the terms of the Trust
               (the "Successor Trust"),

          then the Participant shall not be entitled to a distribution of
          benefits from this Plan on account of such termination of employment,
          and the Company or other Participating Employer which formerly
          employed the Participant and which maintains an Account or Accounts
          for such Participant under this Plan shall transfer, deliver and
          assign to the Successor Plan and Successor Employer as of the date the
          Participant becomes employed by the Successor Employer any and all
          benefit obligations under this Plan which relate to the Participant,
          and effective with and subsequent to the adoption of the Successor
          Plan by the Successor Employer and the transfer of the Participant's
          benefit obligations from this Plan to the Successor Plan, the
          Participant whose benefits were transferred to the Successor Plan
          shall not be entitled to receive any amounts from this Plan which
          relate to benefit obligations which accrued prior to the transfer. The
          preceding provisions to the contrary notwithstanding, the provisions
          of this Section 11.02 shall not be effective for Transactions that
          occur on or after the date of a Change in Control without the written
          consent of a majority of the Participants in the Plan at such time.

     IN WITNESS WHEREOF, this Amendment has been executed this 31 day of March,
1999.

                                                  TRINITY INDUSTRIES, INC.

                                                  By:  /s/ JACK CUNNINGHAM
                                                       --------------------
                                                  Title:  Vice President

                                       11

<PAGE>   1


                            TRINITY INDUSTRIES, INC.
          SUPPLEMENTAL PROFIT SHARING AND DEFERRED DIRECTOR FEE TRUST

         This Trust Agreement made by and between TRINITY INDUSTRIES, INC., a
Delaware corporation (the "Company") and CHASE BANK OF TEXAS, N.A., a national
banking association (the "Trustee");

         WHEREAS, the Company and certain affiliates (the Company and its
affiliates collectively referred to as the "Employers") have adopted
nonqualified deferred compensation plans known as the Trinity Industries, Inc.
Supplemental Profit Sharing Plan (the "Supplemental Profit Sharing Plan") and
the Trinity Industries, Inc. Deferred Plan for Director Fees (the "Director
Plan") (each sometimes referred to herein as a "Plan" and collectively referred
to herein as the "Plans"); and

          WHEREAS, the Employers have incurred or expect to incur liability
under the terms of such Plans with respect to the individuals participating in
such Plans; and

          WHEREAS, the Employers have previously established a trust known as
the Supplemental Profit Sharing Trust for Employees of Trinity Industries, Inc.
and Certain Affiliates (hereinafter called the "Trust") pursuant to separate
agreement with the Trustee, to which the Employers have contributed assets to be
used for the satisfaction of the benefit liabilities under the Supplemental
Profit Sharing Plan; and

         WHEREAS, pursuant to Section 11.3 of the agreement governing the
Trust, the Company may amend the trust on behalf of all Employers; and

          WHEREAS, the Company desires to amend and restate the trust agreement
pursuant to which the Trust is maintained and administered in order to add to
the Trust the funding of the Director Plan, to change the name of the Trust, and
to provide that assets contributed by and held for the satisfaction of Plan
benefit liabilities of each Employer shall be allocated to a Separate Account,
as herein defined, for such Employer's Plan Participants and beneficiaries,
subject to the claims of such Employer's creditors in the event of the
Employer's Insolvency, as herein defined, until paid to Plan Participants and
their beneficiaries in such manner and at such times as specified in the Plans;
and

         WHEREAS, it is the intention of the parties that this Trust shall
constitute an unfunded arrangement and shall not affect the status of the
Director Plan as an unfunded plan or the Supplemental Profit Sharing Plan as an
unfunded plan maintained for the purpose of providing deferred compensation for
a select group of management or highly compensated employees for purposes of
Title I of the Employee Retirement Income Security Act of 1974; and

         WHEREAS, it is the intention of the Employers to make contributions to
the Trust to provide a source of funds to assist them in the meeting of their
liabilities under the Plans;

         NOW, THEREFORE, the parties do hereby amend, rename and restate the
Trust and agree that the Trust shall be comprised, held and disposed of as
follows:



<PAGE>   2




         Section 1. Establishment Of Trust.

         (a) The Employers have previously deposited with the Trustee in trust
amounts in excess of $1,000.00, which constitute the principal of the Trust to
be held, administered and disposed of by the Trustee as provided in this Trust
Agreement.

         (b) The Trust hereby established shall be irrevocable.


         (c) The Trust is intended to be a grantor trust, of which each
Employer is the grantor with respect to its Separate Account, within the
meaning of subpart E, part I, subchapter J, chapter 1, subtitle A of the
Internal Revenue Code of 1986, as amended, and shall be construed accordingly.

         (d) The principal of the Trust, and any earnings thereon shall be held
separate and apart from other funds of the Employers and shall be used
exclusively for the uses and purposes of Plan Participants and general
creditors as herein set forth. Plan Participants and their beneficiaries shall
have no preferred claim on, or any beneficial ownership interest in, any
assets of the Trust. Any rights created under the Plans and this Trust
Agreement shall be mere unsecured contractual rights of Plan Participants and
their beneficiaries against the Employers. Any amounts allocated to an
Employer's Separate Account under the Trust will be subject to the claims of
such Employer's general creditors under federal and state law in the event of
Insolvency, as defined in Section 4(a) herein.

         (e) The Employers, in their sole discretion, may at any time, or from
time to time, make additional deposits of cash or other property in trust with
the Trustee to augment the principal to be held, administered and disposed of by
the Trustee as provided in this Trust Agreement; provided, however, that each
12-month period ending March 31 each Employer shall contribute to the Trust an
amount of cash or property at least equal in value to the total amount of
deferrals and contributions credited to the Accounts of Participants employed
by such Employer pursuant to the Supplemental Profit Sharing Plan during such
12-month period and the Company shall contribute to the Trust each 12-month
period ending March 31 an amount of cash or property at least equal in value to
the total amount of deferrals credited to the Accounts of Participants pursuant
to the Director Plan during such 12-month period. In lieu of all or a portion
of the contribution to the Trust required by this paragraph and paragraph 1(f)
below, the Employers may make contributions in the form of premium payments on
insurance policies that are assets of the Trust in such amount and in such
manner as the Trustee may direct.

         (f) Any provision of this Trust Agreement to the contrary
notwithstanding, upon a Change in Control, as defined in the Plans, each
Employer shall (i) as soon as possible, but in no event more than two business
days following the date of such Change in Control, make an irrevocable
contribution to the Trust in an amount, as determined by an Independent
Committee, as defined below, which when added to the total value of the assets
allocated to the Employer's Separate Account under the Trust at such time
equals 125% of the total amount credited to all Accounts under the Supplemental
Profit Sharing Plan and the Director Plan with respect to such Employer's
respective Plan Participants as of the date on which the Change in Control
occurred,

                                      -2-

<PAGE>   3


and (ii) on and after the date of the Change in Control, make monthly
contributions to the Trust in amounts sufficient, as determined by the
Independent Committee, to maintain the total value of the assets allocated to
the Employer's Separate Account at an amount equal to 125% of the total amount
credited to all Accounts under the Supplemental Profit Sharing Plan and the
Director Plan with respect to such Employer's respective Plan Participants. Any
provision of this Trust Agreement to the contrary notwithstanding, on and
after the date of a Change in Control, the assets allocated to each Employer's
Separate Account under this Trust, including any additional contributions made
by such Employer in accordance with this Section 1(f) for the period following
such Change in Control and any earnings on such Separate Account's
proportionate share of the Trust's assets, shall be held exclusively for the
benefit of those Participants in the Plans (or their beneficiaries) employed by
such Employer as of the date immediately prior to the date of such Change in
Control, subject to the claims of general creditors of such Employer under
federal and state law as set forth below.

         (g) In the event that:


                  (i) an Employer, other than the Company, for whom a Separate
         Account is being maintained under this Trust ceases to be a
         "Participating Employer" in the Supplemental Profit Sharing Plan as
         provided in Section 11.01 of that Plan and is deemed to have
         established a Successor Plan as provided in said Section 11.01 to
         which all benefit obligations which are allocable to its employees
         under the Supplemental Profit Sharing Plan have been transferred, the
         Company shall cause to be prepared a new trust (the "Successor Trust")
         for the withdrawing Employer, the terms of which shall be identical to
         the terms of this Trust, and the Trustee shall transfer the assets of
         the Separate Account being maintained for such Employer under this
         Trust to the Successor Trust; or

                  (ii) the benefit obligations which relate to a Participant
         under the Supplemental Profit Sharing Plan are transferred, delivered
         and assigned to a Successor Plan as provided in Section 11.02 of the
         Supplemental Profit Sharing Plan, then the Trustee shall transfer to
         the Successor Trust from the Separate Account of each Employer who,
         immediately prior to such transfer, delivery and assignment,
         maintained an Account under the Supplemental Profit Sharing Plan to
         the Successor Trust assets in an amount equal to the amount that had
         been credited to the Participant's Account or Accounts by such
         Employer under the Supplemental Profit Sharing Plan immediately prior
         to the transfer, delivery and assignment; provided, however, that if
         the total amount in such Separate Account is less than the total
         amount of benefit obligations of such Employer under the Plans at the
         time of transfer, then the amount transferred shall not exceed a pro
         rata portion of such Separate Account determined based upon the amount
         of the benefit obligations of such Participant transferred, delivered
         and assigned by such Employer to the Successor Plan compared to all
         benefit obligations of such Employer under the Plans; and provided,
         further, however that the provisions of this subsection (g)(ii) shall
         not be effective with respect to "Transactions" (as defined in Section
         11.02 of the Supplemental Profit Sharing Plan) that occur on or after
         a Change in Control without the written consent of a majority of the
         Participants in the Plan at such time.

                                      -3-

<PAGE>   4


         Section 2. Payments to Plan Participants and their Beneficiaries.

         (a) The Committee of each Plan shall deliver to the Trustee a schedule
(the "Payment Schedule") that indicates the amounts payable with respect to
each Plan Participant (and his or her beneficiaries) and identifies the
Separate Account of the Employer from which such amounts are payable, that
provides a formula or other instructions acceptable to the Trustee for
determining the amounts so payable, the form in which such amount is to be paid
(as provided for or available under the Plans), and the time of commencement
for payment of such amounts. An updated Payment Schedule shall be provided by
each Committee to the Trustee periodically, but no less frequently than once
each calendar quarter. Except as otherwise provided herein, the Trustee shall
make payments to the Plan Participants and their beneficiaries in accordance
with such Payment Schedule. The Trustee shall make provision for the reporting
and withholding of any federal, state or local taxes that may be required to be
withheld with respect to the payment of benefits pursuant to the terms of the
Plans and shall pay amounts withheld to the appropriate taxing authorities or
determine that such amounts have been reported, withheld and paid by an
Employer under the Supplemental Profit Sharing Plan or by the Company under the
Director Plan.

         (b) The entitlement of a Plan Participant or his or her beneficiaries
to benefits under a Plan shall be determined by each Committee or such other
party as may be designated under the Plan, and any claim for such benefits
shall be considered and reviewed under the procedures set out in the Plan.

         (c) The Employers participating in the Supplemental Profit Sharing
Plan or the Company with respect to the Director Plan may make payments of
benefits directly to Plan Participants or their beneficiaries as they become
due under the terms of each Plan in lieu of payment from the Trust. The
applicable Committee shall notify the Trustee of an Employer's or the Company's
decision to make payments of benefits directly prior to the time amounts are
payable to Participants or their beneficiaries. In addition, if the assets
allocated to an Employer's Separate Account under the Trust are not sufficient
to make payments of benefits to its respective Plan Participants and
beneficiaries in accordance with the terms of the Plans, such Employer shall
make the balance of each such payment as it falls due, and the Separate
Accounts of other Employers hereunder shall not be liable for the payment of
such benefits. The Trustee shall notify the Company immediately when the assets
allocated to an Employer's Separate Account under the Trust are not sufficient
to satisfy all payments due.

         (d) Any provision of this Trust Agreement to the contrary
notwithstanding, upon and after a Change in Control, (i) the Trustee shall make
payments to Plan Participants or their beneficiaries in accordance with the
direction of the Independent Committee rather than a Plan Committee, regardless
of whether the Trustee has received a Payment Schedule or any other form of
direction from a Plan Committee to make such payments, and (ii) to the extent
that an Employer's Separate Account is not sufficient to satisfy all vested
benefit liabilities of such Employer, whether or not then due or payable, at
the time a benefit payment is owed to one or more Plan Participants or
beneficiaries upon or after a Change in Control, then each such Participant or
beneficiary entitled to payment shall receive from such Employer's Separate

                                      -4-

<PAGE>   5


Account under the Trust Fund only a pro-rata share of such Separate Account
determined on the basis of his or her Plan Account balances for which such
Employer is liable compared to the total Plan Account balances for which such
Employer is liable, and the remaining amount owed shall be paid directly by the
Employer.

         Section 3. Appointment of Independent Committee.

         (a) Any provision of this Trust Agreement to the contrary
notwithstanding, upon a Change in Control, an Independent Committee consisting
of at least three members shall be appointed by the Human Resource Committee
subject to the written approval of a majority of the Participants in the Plans
on the date of such Change in Control. The Independent Committee shall:

                  (i) determine the amount of the irrevocable contributions to
         be made by each Employer pursuant to Section 1(f) hereof;

                  (ii) determine in accordance with the Plans the amounts
         payable with respect to each Plan Participant (and his or her
         beneficiaries), the form in which such amounts are to be paid, and the
         time of commencement for payment of such amounts pursuant to Section
         2(a) hereof;

                  (iii) determine the entitlement of Plan Participants and
         beneficiaries to benefits under the terms of the Plans pursuant to
         Section 2(b) hereof;

                  (iv) direct the Trustee to make payments to Plan Participants
         and their beneficiaries pursuant to Section 2 hereof; and

                  (v) select a successor Trustee for the Trust if a Trustee
         resigns or is removed on or after the date of a Change in Control
         pursuant to Section 12.

         (b) Each member of the Independent Committee so appointed shall serve
in such office until his or her death, resignation or removal. The Human
Resource Committee may remove any member of the Independent Committee effective
upon the written approval of a majority of the Plan Participants. Vacancies on
the Independent Committee shall be filled from time to time by the Human
Resource Committee effective upon the written approval of a majority of the
Participants in the Plans on the date such vacancy is filled.

         (c) The Independent Committee shall act by a majority of its members
at the time in office and such action may be taken either by a vote at a
meeting or in writing without a meeting. The Independent Committee may by such
majority action authorize any one or more of its members to execute any
document or documents on behalf of the Independent Committee, in which event
the Independent Committee shall notify the Trustee in writing of such action
and the name or names of its member or members so authorized to act. Every
interpretation, choice, determination or other exercise by the Independent
Committee of any power or discretion given either expressly or by implication
to it shall be conclusive and binding upon all parties having or

                                      -5-

<PAGE>   6


claiming to have an interest under the Trust or otherwise directly or indirectly
affected by such action, without restriction, however, on the right of the
Independent Committee to reconsider and redetermine such action.

         (d) Any provision of this Trust Agreement to the contrary
notwithstanding, in the event that (i) the Human Resource Committee shall not
appoint an Independent Committee within 30 days following a Change in Control or
a majority of the Participants in the Plans do not approve in writing at least
three members selected by the Human Resource Committee to serve on an
Independent Committee within such 30-day period or (ii) the Human Resource
Committee does not fill a vacancy on the Independent Committee within 30 days of
the date such office becomes vacant or a majority of the Participants in the
Plans do not approve in writing the Human Resource Committee's selection to fill
a vacancy on the Independent Committee within such 30-day period, then the
Participants in the Plans shall elect, by majority vote, up to three individuals
to the extent necessary to ensure that the Independent Committee consists of
three members.

         Section 4. Trustee Responsibility Regarding Payments to Trust
Beneficiary when an Employer Is Insolvent.

         (a) The Trustee shall cease payment of benefits to Plan Participants
and their beneficiaries if the Employer liable for such payment of benefits is
Insolvent. An Employer shall be considered "Insolvent" for purposes of this
Trust Agreement if (i) the Employer is unable to pay its debts as they become
due, or (ii) the Employer is subject to a pending proceeding as a debtor under
the United States Bankruptcy Code.

         (b) At all times during the continuance of this Trust, as provided in
Section 1(d) hereof, the principal and income of each Employer's Separate
Account under the Trust shall be subject to claims of general creditors of the
Employer under federal and state law as set forth below.

                  (i) The Human Resource Committee and the Chief Executive
         Officer of an Employer shall have the duty to inform the Trustee in
         writing of the Employer's Insolvency. If a person claiming to be a
         creditor of an Employer alleges in writing to the Trustee that the
         Employer has become Insolvent, the Trustee shall determine whether the
         Employer is Insolvent and, pending such determination, the Trustee
         shall discontinue payment of benefits to the Employer's respective Plan
         Participants or their beneficiaries.

                  (ii) Unless the Trustee has actual knowledge of an Employer's
         Insolvency, or has received notice from the Employer or a person
         claiming to be a creditor alleging that the Employer is Insolvent, the
         Trustee shall have no duty to inquire whether the Employer is
         Insolvent. The Trustee may in all events rely on such evidence
         concerning the Employer's solvency as may be furnished to the Trustee
         and that provides the Trustee with a reasonable basis for making a
         determination concerning the Employer's solvency.

                                      -6-

<PAGE>   7


                  (iii) If at any time the Trustee has determined that an
         Employer is Insolvent, the Trustee shall discontinue payments to the
         Employer's respective Plan Participants and their beneficiaries and
         shall hold the assets allocated to the Employer's Separate Account
         under the Trust for the benefit of the Employer's general creditors.
         Nothing in this Trust Agreement shall in any way diminish any rights
         of Plan Participants or their beneficiaries to pursue their rights as
         general creditors of an Employer with respect to benefits due under
         the Plans or otherwise.

                  (iv) The Trustee shall resume the payment of benefits to an
         Employer's respective Plan Participants and their beneficiaries in
         accordance with Section 2 of this Trust Agreement only after the
         Trustee has determined that the Employer is not Insolvent (or is no
         longer Insolvent).

         (c) Provided that there are sufficient assets allocated to an
Employer's Separate Account under the Trust, if the Trustee discontinues the
payment of benefits from the Trust pursuant to Section 4(b) hereof and
subsequently resumes such payments, the first payment following such
discontinuance shall include the aggregate amount of all payments due to Plan
Participants and their beneficiaries under the terms of the Plans for the period
of such discontinuance, less the aggregate amount of any such Plan benefit
payments made to Plan Participants or their beneficiaries by the Employers in
lieu of the payments provided for hereunder during any such period of
discontinuance.

         Section 5. Payments to the Employers.

         (a) Except as provided in Sections 4 and 5(b) hereof, the Employers
shall have no right or power to direct the Trustee to return to the Employers
or to divert to others any of the Trust assets before payment of all benefits
have been made to Plan Participants and their beneficiaries pursuant to the
terms of the Plans.

         (b) To the extent that a Plan Committee at any time determines based
upon information provided to the Committee by the Trustee that the value of the
assets allocated to an Employer's Separate Account under the Trust exceeds 125%
of the amounts credited to Plan Accounts for which such Employer is liable as
of the most recent Valuation Date plus any deferrals or contributions made
since that date, the Trustee shall pay such excess to such Employer upon
receipt of written request therefor from the Employer; provided, however, that
no such payment of excess assets to an Employer shall be made on or after the
date of a Change in Control without the written approval of two-thirds of the
Participants for whom such Employer maintains an Account pursuant to a Plan.

         Section 6. Investment Authority.

         (a) The Trustee shall establish and maintain a separate account within
the Trust for each Employer (the "Separate Account"). An amount equal to the
value of all current Trust Fund assets as of the effective date of this
agreement shall be allocated to the Separate Account maintained for the
Company. All future amounts deposited with the Trustee by an Employer

                                      -7-

<PAGE>   8


shall be allocated to such Employer's Separate Account. The Separate Accounts
shall be maintained for record keeping purposes only, and the assets of the
Trust may remain invested as a single fund; provided, however, that the Company
may direct the Trustee to segregate all or any portion of the Trust Funds for
investment solely for one or more of the Separate Accounts. At the end of each
calendar quarter and at such other times as the Company may determine, the
Trustee shall determine the fair market value of the assets of the Trust. On
the basis of such valuation, the Trustee shall adjust the Separate Account of
each Employer to reflect its proportionate share of the earnings, losses and
expenses of the Trust for the valuation period then ended.

        (b) The Trustee shall have full power and authority to invest and
reinvest the Trust assets, or any part thereof, in such stocks (common or
preferred), bonds, mortgages, notes, interest-bearing deposits (including such
deposits with any corporate trustee acting hereunder), options and contracts
for the future or immediate receipt or delivery of property of any kind, or
other securities, producing or nonproducing oil and gas royalties and payments
and other producing and nonproducing interests in minerals, or in commodities,
life insurance policies, annuity contracts or other property of any kind or
nature whatsoever, whether real, personal or mixed, as the Trustee, in the
Trustee's absolute discretion and judgment, deems appropriate for the Trust,
and to hold cash uninvested at any time and from time to time in such amounts
and to such extent as the Trustee, in the Trustee's absolute discretion and
judgment, deems appropriate for the Trust. The Trustee shall have full power
and authority to manage, handle, invest, reinvest, sell for cash or credit, or
for part cash or part credit, exchange, hold, dispose of, lease for any period
of time (whether or not longer than the life of the Trust), improve, repair,
maintain, work, develop, use, operate, mortgage, or pledge, all or any part of
the assets and property from time to time constituting any part of the trust
funds held in trust under the Trust; borrow or loan money or securities; write
options and sell securities or other property short or for future delivery;
engage in hedging procedures; buy and sell futures contracts; execute
obligations, negotiable and nonnegotiable; vote shares of stock in person and
by proxy, with or without power of substitution; register investments in the
name of a nominee; sell, convey, lease and/or otherwise deal with any producing
or nonproducing oil, gas and mineral leases or mineral rights, payments and
royalties; pay all reasonable expenses; execute and deliver any deeds,
conveyances, leases, contracts, or written instruments of any character
appropriate to any of the powers or duties of the Trustee, and shall, in
general, have as broad power respecting the management, operation and handling
of the Trust assets and property as if the Trustee were the owner of such
assets and property in the Trustee's own right. The preceding provisions of
this paragraph to the contrary notwithstanding, the Company shall have the
right and power at any time and from time to time to give the Trustee broad
guidelines within which it shall invest the assets of the Trust; provided,
however, that on and after the date of a Change in Control, the Independent
Committee, rather than the Company, shall have the sole authority to exercise
such right.

         (c) All rights associated with assets of the Trust shall be exercised
by the Trustee or the person designated by the Trustee, and shall in no event
be exercisable by or rest with Plan Participants.

                                      -8-

<PAGE>   9


         (d) Each Employer shall have the right, at any time, and from time to
time in its sole discretion, to substitute assets of equal fair market value
for any asset held by the Trust; provided, however, that on and after the date
of a Change in Control, any assets transferred to the Trust in substitution for
assets held by the Trust must consist of cash or marketable securities
acceptable to the Independent Committee and the fair market value of the
respective assets shall be determined by the Trustee. This right is exercisable
by the Employer in a nonfiduciary capacity without the approval or consent of
any person in a fiduciary capacity.

         Section 7. Disposition of Income. During the term of this Trust, all
income received by the Trust, net of any applicable expenses and taxes paid
from the Trust, shall be accumulated and reinvested; provided, however that the
Employers shall pay all taxes, fees and expenses associated with the Plans and
the Trust. In the event the Employers do not pay all taxes, fees and expenses
owed with respect to the Trust, any portion not paid by the Employers may be
paid from the Trust, provided, that the Trustee shall immediately notify the
Employers in writing that such payment has been made and the Employers shall
reimburse the Trust for such payment within 15 days from the date of such
notice.

         Section 8. Accounting by Trustee. The Trustee shall keep accurate and
detailed records of all investments, receipts, disbursements, and all other
transactions required to be made, including such specific records as shall be
agreed upon in writing between the Company and the Trustee. Within 30 days
following the close of each twelve-month period ending March 31 and within 30
days after the removal or resignation of the Trustee, the Trustee shall deliver
to the Company a written account of its administration of the Trust and to each
Employer a written account of its administration of the Employer's Separate
Account during such year or during the period from the close of the last
preceding year to the date of such removal or resignation, setting forth all
investments, receipts, disbursements and other transactions effected by it,
including a description of all securities and investments purchased and sold
with the cost or net proceeds of such purchases or sales (accrued interest paid
or receivable being shown separately), and showing all cash, securities and
other property held in the Trust at the end of such year or as of the date of
such removal or resignation, as the case may be.

         Section 9. Responsibility of the Trustee.

         (a) The Trustee shall act with the care, skill, prudence and diligence
under the circumstances then prevailing that a prudent person acting in like
capacity and familiar with such matters would use in the conduct of an
enterprise of a like character and with like aims; provided, however, that the
Trustee shall incur no liability to any person for any action taken pursuant to
a direction, request or approval given by an Employer which is contemplated by,
and in conformity with, the terms of the Plans or this Trust and is given in
writing by the Employer.

         (b) If the Trustee undertakes or defends any litigation arising in
connection with this Trust, the Employers agree to indemnify the Trustee
against the Trustee's costs, expenses and liabilities (including, without
limitation, attorneys' fees and expenses) relating thereto and to be primarily
liable for such payments. If the Employers do not pay such costs, expenses and
liabilities in a reasonably timely manner, the Trustee may obtain payment from
the Trust;

                                      -9-

<PAGE>   10


provided, however, that in the event any such costs, expenses and liabilities
are paid from the Trust, the Trustee shall notify the Employers in writing that
such payment has been made and the Employers shall reimburse the Trust for such
payment within 15 days from the date of such notice.

         (c) The Trustee may consult with legal counsel (who may also be counsel
for the Employers generally) with respect to any of its duties or obligations
hereunder.

         (d) The Trustee may hire agents, accountants, actuaries, investment
advisors, financial consultants or other professionals to assist it in
performing any of its duties or obligations hereunder.

         (e) The Trustee shall have, without exclusion, all powers conferred on
trustees by applicable law, unless expressly provided otherwise herein;
provided, however, that except as provided in Sections 5(b) and 6(d) hereof, if
an insurance policy is held as an asset of the Trust, the Trustee shall have no
power to name a beneficiary of the policy other than the Trust, to assign the
policy (as distinct from conversion of the policy to a different form) other
than to a successor Trustee, or to loan to any person the proceeds of any
borrowing against such policy.

         (f) Notwithstanding any powers granted to the Trustee pursuant to this
Trust Agreement or applicable law, the Trustee shall not have any power that
could give this Trust the objective of carrying on a business and dividing the
gains therefrom, within the meaning of Section 301.7701-2 of the Procedure and
Administrative Regulations promulgated pursuant to the Internal Revenue Code.

         Section 10. Compensation and Expenses of the Trustee. The Trustee shall
be paid such reasonable compensation commensurate with the services and
responsibilities involved hereunder as shall from time to time be agreed upon by
the Trustee and the Company. The Employers shall pay all administrative and the
Trustee's fees and expenses, but, if not so paid, such fees and expenses shall
be paid from the Trust; provided, however, that in the event any such fees and
expenses are paid from the Trust, the Trustee shall notify the Employers in
writing that such payment has been made and the Employers shall reimburse the
Trust for such payment within 15 days from the date of such notice.

         Section 11. Resignation and Removal of the Trustee.

         (a) The Trustee may resign at any time by written notice to the
Company, which shall be effective 30 days after receipt of such notice unless
the Company and the Trustee agree otherwise.

         (b) The Trustee may be removed by the Company on 30 days notice or upon
shorter notice accepted by the Trustee; provided, however, that the Trustee may
not be removed by the Company on or after the date of a Change in Control except
with the written consent of a majority of the Plan Participants.

                                     -10-

<PAGE>   11


         (c) Upon resignation or removal of the Trustee and appointment of a
successor Trustee, all assets shall subsequently be transferred to the
successor Trustee. The transfer shall be completed within 30 days after receipt
of notice of resignation, removal or transfer, unless the Company extends the
time limit.

         (d) If the Trustee resigns or is removed, a successor shall be
appointed, in accordance with Section 12 hereof, by the effective date of
resignation or removal under paragraph(s) (a) or (b) of this Section. If no
such appointment has been made, the Trustee may apply to a court of competent
jurisdiction for appointment of a successor or for instructions. All expenses
of the Trustee in connection with the proceeding shall be allowed as
administrative expenses of the Trust.

         Section 12. Appointment of Successor.

         (a) If the Trustee resigns or is removed in accordance with Section
11(a) or (b) hereof, the Company may appoint any third party, such as a bank
trust department or other party that may be granted corporate trustee powers
under state law, as a successor to replace the Trustee upon resignation or
removal; provided, however, that if the Trustee resigns or is removed on or
after the date of a Change in Control, the Independent Committee shall select a
successor Trustee in accordance with this Section 12. The appointment shall be
effective when accepted in writing by the new Trustee, who shall have all of
the rights and powers of the former Trustee, including ownership rights in the
Trust assets. The former Trustee shall execute any instrument necessary or
reasonably requested by the Company or the successor Trustee to evidence the
transfer.

         (b) The successor Trustee need not examine the records and acts of any
prior Trustee and may retain or dispose of existing Trust assets, subject to
Sections 8 and 9 hereof. The successor Trustee shall not be responsible for and
the Employers shall indemnify and defend the successor Trustee from any claim
or liability resulting from any action or inaction of any prior Trustee or from
any other past event, or any condition existing at the time it becomes
successor Trustee.

         Section 13. Amendment or Termination.

         (a) This Trust Agreement may be amended by a written instrument
executed by the Trustee and the Company. Notwithstanding the foregoing, (i) no
such amendment shall conflict with the terms of the Plans or shall make the
Trust revocable, and (ii) this Trust Agreement may not be amended on or after
the date of a Change in Control without the written consent of a majority of
the Participants in the Plans.

         (b) The Trust shall not terminate until the date on which Plan
Participants and their beneficiaries are no longer entitled to benefits
pursuant to the terms of the Plans. Upon termination of the Trust any assets
that remain allocated to an Employer's Separate Account under the Trust shall
be returned to such Employer.

                                     -11-

<PAGE>   12


         (c) Upon written approval of all of the Participants (including any
beneficiaries of deceased Participants entitled to payment of benefits pursuant
to the terms of the Plans), the Company may terminate this Trust prior to the
time all benefit payments under the Plans have been made. All assets allocated
to an Employer's Separate Account under the Trust at termination shall be
returned to such Employer.

         (d) The Company may terminate this Trust with respect to the Separate
Account of any Employer with the written approval of all of such Employer's
respective Plan Participants (including any beneficiaries of deceased
Participants of such Employer who are entitled to payment of benefits pursuant
to the terms of the Plans). All assets allocated to an Employer's Separate
Account under the Trust on the date of such termination shall be returned to
such Employer.

         Section 14. Miscellaneous.

         (a) Any provision of this Trust Agreement prohibited by law shall be
ineffective to the extent of any such prohibition, without invalidating the
remaining provisions hereof.

         (b) Benefits payable to Plan Participants and their beneficiaries
under this Trust Agreement may not be anticipated, assigned (either at law or
in equity), alienated, pledged, encumbered or subjected to attachment,
garnishment, levy, execution or other legal or equitable process.

         (c) This Trust Agreement shall be governed and construed in accordance
with the internal laws (and not the principles relating to conflicts of laws)
of the State of Texas, except where superseded by federal law.

         (d) Unless the context clearly indicates otherwise, when used in this
Trust Agreement:

                  (i) "Committee" or "Plan Committee" shall mean the
         "Committee" appointed to administer the Supplemental Profit Sharing
         Plan and the "Administrative Committee" appointed to administer the
         Director Plan.

                  (ii) "Human Resource Committee" shall mean the Human Resource
         Committee of the Board of Directors of the Company.

                  (iii) "Participant" shall mean each "Participant" as that
         term is defined in the Supplemental Profit Sharing Plan and each
         Director who has an amount credited to his or her Account under the
         Director Plan or who has elected to have all or any portion of his or
         her Annual Fee deferred under the terms of that Plan.

         (e) Except where otherwise defined, capitalized terms used herein
shall have the meaning given to them in the Plans.

                                     -12-

<PAGE>   13


         (f) In the event that a dispute arises between a Plan Participant or
beneficiary and the Participant's Employer, the Company or the Trustee with
respect to the payment of amounts from the Trust and the Participant or
beneficiary is successful in pursuing a benefit to which he or she is entitled
under the terms of the Plans and this Trust against the Participant's Employer,
the Company, the Trustee or any other party in the course of litigation or
otherwise and incurs attorneys' fees, expenses and costs in connection
therewith, the Company or with respect to the Supplemental Profit Sharing Plan,
the Participant's Employer, if other than the Company, shall reimburse the Plan
Participant or beneficiary for the full amount of any such attorneys' fees,
expenses and costs.

         (g) Upon the written consent of the Company delivered to the Trustee,
any other Affiliate of the Company which adopts the Supplemental Profit Sharing
Plan may become a party to this Trust by delivering to the Trustee a certified
copy of a resolution of its board of directors or other governing authority
adopting this Trust. For purposes of this Trust, any such Affiliate which adopts
this Trust with the written consent of the Company shall be an Employer
hereunder.

         (h) Any controversy arising out of, or relating to, the payment of Plan
benefits that are payable from this Trust shall be resolved pursuant to the
provisions of the applicable Plan, including provisions relating to the
procedures for making benefit claims under the Plan and in accordance with the
provisions, if any, requiring arbitration of Plan benefit disputes.

         IN WITNESS WHEREOF, this Agreement has been executed this 31 day of
March, 1999 to be effective as of April 1, 1999.

                                       TRINITY INDUSTRIES, INC.

                                       By /s/ JACK CUNNINGHAM
                                          --------------------------------------
                                        Title: Vice President

                                       CHASE BANK OF TEXAS, N. A.


                                       By
                                          --------------------------------------
                                        Title:

         The undersigned, as members of the Trust Committee appointed pursuant
to the provisions of the Supplemental Profit Sharing Trust for Employees of
Trinity Industries, Inc. and

                                     -13-

<PAGE>   14


Certain Affiliates, hereby approve and agree to the amendment and restatement
of the Trust as set forth herein.


                                       /s/ JACK CUNNINGHAM
                                       ------------------------------------


                                       /s/ [ILLEGIBLE]
                                       ------------------------------------


                                       /s/ NEIL O. SHOOP
                                       ------------------------------------

                                      -14-

<PAGE>   15


THE STATE OF TEXAS               )
                                 )
COUNTY OF DALLAS                 )

         BEFORE ME, the undersigned authority, a notary public in and for said
County and State, on this day personally appeared Jack Cunningham, known to me
to be the person whose name is subscribed to the foregoing instrument and
acknowledged to me that the same was the act of the said TRINITY INDUSTRIES,
INC., a Delaware corporation, and that he/she executed the same as the act of
such corporation for the purposes and consideration therein expressed, and in
the capacity therein stated.

         GIVEN UNDER MY HAND AND SEAL OF OFFICE, this 31st day of March, 1999.

                                       /s/ ANA HORNER
       [SEAL]                          ------------------------------------
                                       Notary Public, State of Texas

My Commission expires:

      3/28/2000
- ----------------------


THE STATE OF TEXAS               )
                                 )
COUNTY OF DALLAS                 )

         BEFORE ME, the undersigned authority, a notary public in and for said
County and State, on this day personally appeared ______________________, known
to me to be the person whose name is subscribed to the foregoing instrument and
acknowledged to me that the same was the act of the said CHASE BANK OF TEXAS,
N. A., a national banking association, and that he/she executed the same as the
act of such banking association for the purposes and consideration therein
expressed, and in the capacity therein stated.

         GIVEN UNDER MY HAND AND SEAL OF OFFICE, this ___ day of
_____________________, 1999.



                                       ------------------------------------
                                       Notary Public, State of Texas


My Commission expires:

- ----------------------

                                     -15-

<PAGE>   1


                            TRINITY INDUSTRIES, INC.
                          SUPPLEMENTAL RETIREMENT PLAN

                                    ARTICLE I
                                  INTRODUCTION

1.1  This Plan shall be known as the Trinity Industries, Inc. Supplemental
     Retirement Plan and shall be effective April 1, 1995.

1.2  This Plan is an unfunded deferred compensation arrangement for a select
     group of management or highly compensated personnel of Trinity Industries,
     Inc. and its Affiliates (as hereinafter defined) in order to supplement
     their retirement benefits to the extent that those benefits are limited by
     Sections 401(a)(17) and 415 of the Internal Revenue Code of 1986.
     Participants will be determined by the Plan Committee.

1.3  The payments made under this Plan shall be made in coordination with any
     benefits to which a Participant is or may become entitled under any Base
     Plan (as hereinafter defined).

1.4  Trinity Industries, Inc. hopes and expects to continue the Plan
     indefinitely, but reserves the right to amend it or terminate it in any
     respect and at any time or from time to time, to the extent provided in
     Article VI hereof.

1.5  This Plan shall apply only to an employee who begins receiving benefits
     from a Base Plan after April 1, 1995, as determined by the Plan Committee.

                                   ARTICLE II

                          DEFINITIONS AND CONSTRUCTION

2.1  Unless the context otherwise requires, the terms used herein shall have the
     meanings set forth in the remaining sections of this Article II.

                                      -1-


<PAGE>   2


2.2  Affiliate shall mean any entity affiliated with Trinity which shall have
     adopted a Base Plan for the benefit of its employees.

2.3  Base Plan shall mean the defined benefit plan or plans sponsored by Trinity
     and/or its Affiliates and qualified under Section 401(a) of the Code, from
     which the Participant is entitled to receive benefits.

2.4  Beneficiary shall mean the individual or individuals entitled to receive
     benefits payable on behalf of any Participant under his Base Plan in the
     event of his death on or after Retirement.

2.5  Board shall mean the Board of Directors of Trinity Industries, Inc.

2.6  Code shall mean the Internal Revenue Code of 1986, as amended from time to
     time.

2.7  Committee shall mean the Supplemental Retirement Plan Committee appointed
     by the Board.

2.8  Company shall mean Trinity Industries, Inc., a Delaware corporation, as
     well as its Affiliates, which are hereinafter collectively referred to as
     the Company.

2.9  Effective Date shall mean April 1, 1995.

2.10 Eligibility Requirements shall mean:

     (i)   having been employed by the Company for at least five (5) years;

     (ii)  receiving compensation from the Company in excess of the Code Section
           401(a)(17) limit (currently $150,000);

     (iii) being a participant under a Base Plan; and,

     (iv)  being included within a group of managerial or highly compensated
           employees of the Company selected by the Plan committee.

2.11 Employee shall mean any person employed by the Company who is included on
     the Federal Insurance Contribution Act rolls of the Company.

2.12 Participant shall mean an Employee who meets the Eligibility Requirements
     as determined by the Plan Committee.

                                      -2-


<PAGE>   3


2.13 Plan shall mean the Trinity Industries, Inc. Supplemental Retirement Plan
     as set forth in this document, as this document may be amended from time
     to time.


2.14 Retirement shall mean the date on which a Participant is eligible to begin
     receiving benefits from any Base Plan.

2.15 Trinity shall mean Trinity Industries, Inc., a Delaware corporation.

2.16 Masculine pronouns used herein shall refer to men or women or both and
     nouns and pronouns when stated in the singular shall include the plural and
     when stated in the plural shall include the singular, wherever appropriate.

                                   ARTICLE III

                           DESIGNATION OF PARTICIPANTS
                            AND FUNDING ARRANGEMENTS

3.1  The Committee shall meet as necessary to verify the eligibility of
     Participants and to approve the amounts of benefits.

3.2  Contributions by Trinity to pay benefits under the Plan will be made solely
     out of the general assets of Trinity. Nothing contained in this Plan and no
     action taken pursuant to the provisions of this Plan shall create or be
     construed to create a trust of any kind, or a fiduciary relationship
     between Trinity or the Plan and any Employee or any other person. Any funds
     which may be set aside or invested relative to the Plan shall continue for
     all purposes to be a part of the general funds of Trinity and no person
     other than Trinity shall, by virtue of the provisions of this Plan, have
     any interest in such funds. To the extent that any person acquires a right
     to receive payment from Trinity under the Plan, such right shall be no
     greater than the right of any unsecured general creditor of Trinity.

                                   ARTICLE IV

                                  PLAN BENEFITS

4.1  This Plan does not provide for the payment of compensation regularly
     payable to an Employee for his customary services to the Company.

                                      -3-

<PAGE>   4




4.2  Benefits payable under this Plan will be paid in coordination with any
     benefits payable to a Participant from his Base Plan.

4.3  If a Participant's services with the Company are terminated prior to his
     eligibility to receive early, normal or late Retirement benefits under his
     Base Plan, he shall forfeit all right, for himself and his Beneficiary, to
     any benefits under this Plan; provided, however, that in the event that
     such services are terminated for any reason other than death or disability
     after the occurrence of a "Change in Control" (as hereinafter defined),
     then such Participant shall not forfeit his right to benefits hereunder and
     shall be entitled to the difference between (i) his "accrued benefit" as
     determined under his Base Plan as of the date of such termination by not
     taking into account Sections 401(a)(17) and 415 of the Code and (ii) his
     "accrued benefit" determined under such Base Plan as of the date of such
     termination by taking into account Sections 401(a)(17) and 415 of the Code,
     with such amount payable to such Employee at the same time and in the same
     manner as Retirement benefits are payable under the Base Plan. For purposes
     of this Plan, a "Change in Control" shall occur in the case of acquisition
     of 50% or more of the outstanding common stock of the Company by a
     corporation, person or other entity pursuant to a tender offer or exchange
     offer for the common stock other than by the Company.

4.4  Benefits from the Plan shall be actuarially computed amounts payable to a
     Participant or Beneficiary so that the annual payments such Participant or
     Beneficiary shall receive from this Plan (as limited by the final sentence
     of this Section) and from the Base Plan shall equal the amount of the
     payments which the Participant would have received at Retirement under the
     Base Plan but for the operation of Section 401(a)(17) or Section 415 of
     the Code. The Plan shall not compensate any Participant or Beneficiary for
     any adverse effects to the Participant which result in a reduction of
     benefits available from the Base Plan due to changes in the Base Plan
     benefit formula, social security laws or other laws and rules.

4.5  In the event of a Participant's death on or after Retirement, Trinity shall
     make any payments called for hereunder to his Beneficiary. Any payment made
     by Trinity in good faith shall fully discharge Trinity from its obligations
     with respect to such payment, and


                                      -4-

<PAGE>   5




     Trinity shall have no further obligation to see to the application of any
     money so paid.

4.6  The benefits payable under this Plan to a Participant who is eligible to
     receive benefits from his Base Plan shall be made according to the form of
     payment elected or mandated under the Base Plan and shall commence at the
     same time as such Base Plan benefits.

                                    ARTICLE V

                                 ADMINISTRATION

5.1  The Committee shall have full power and authority to interpret, construe
     and administer the Plan. The Committee's interpretation and construction
     hereof, and actions hereunder, including any determination of the amount or
     recipient of any payment to be made under the Plan, shall be binding and
     conclusive on all persons and for all purposes. No member of the Committee
     or the Board shall be liable to any person for any action taken or omitted
     in connection with the interpretation and administration Of the Plan.

                                   ARTICLE VI

                            AMENDMENT AND TERMINATION

6.1  The Plan may be amended or terminated in whole or in part from time to time
     by the Board; provided, however, that no such action shall adversely affect
     Participants who shall have begun receiving benefits from the Plan;
     provided further that, in the event of a Change in Control (as defined in
     Section 4.3 hereof), the Plan may be so amended or terminated only upon
     approval (determined as of the date of such approval) by a majority in
     interest of all Participants entitled to benefits under the Plan.

6.2  If Trinity should reorganize, consolidate or merge with another
     corporation, the Plan shall become an obligation of the new entity or of
     any business taking over the assets, duties or responsibilities of Trinity.

6.3  If Trinity liquidates due to insolvency or any other event, the Plan shall
     terminate and be considered as fully and completely discharged.


                                      -5-

<PAGE>   6


                                   ARTICLE VII

                               GENERAL PROVISIONS

7.1  The Plan shall not be deemed to constitute a contract between the Company
     and any Employee or to be a consideration for, or an inducement for, the
     employment of any Employees by the Company. Nothing contained in the Plan
     shall be deemed to give any Employee the right to be retained in the
     service of the Company or to interfere with the right of the Company to
     discharge any Employee at any time, without regard to the effect such
     discharge may have on any rights under the Plan.

7.2  The Plan shall inure to the benefit of and be binding upon the Company, and
     the Participants and their successors and assigns.

7.3  No benefit payable under the Plan will be subject in any manner to
     anticipation, assignment, garnishment or pledge; and any attempt to
     anticipate, assign, garnish or pledge the same will be void; and no such
     benefits will be in any manner liable for or subject to the debts,
     liabilities, engagements or torts of the Participant; and if the
     Participant is adjudicated bankrupt or attempts to anticipate, assign or
     pledge any benefits, then such benefits will, in the discretion of the
     Committee, cease, and in that even the Committee will have the authority to
     cause the same or any part thereof to be held or applied to or for the
     benefit of the Participant, his Beneficiary, his children or other
     dependents, or any of them, in such manner and in such proportion as the
     Committee may deem proper. The foregoing will not, however, preclude or
     affect any pledges, liabilities or other obligations of the Participant to
     the Company.

7.4  If the Committee shall find that any person to whom any payment is payable
     under the Plan is unable to care for his affairs because of mental or
     physical illness, accident, or death, or is a minor, any payment due
     (unless a prior claim therefor shall have been made by a duly appointed
     guardian, committee or other legal representative) may be paid to the
     spouse, a child, a parent, a brother or sister or any person deemed by the
     Committee, in its sole discretion, to have incurred expenses for such
     person otherwise entitled to payment, in such manner and proportions as the
     Committee may determine. Any such payment shall be a complete discharge of
     the liabilities of Trinity under the Plan,


                                      -6-

<PAGE>   7


     and Trinity shall have no further obligation to see to the application of
     any money so paid.

7.5  The payment of Plan benefits to a Participant, as hereinabove provided,
     shall be subject to the following condition, the breach of which shall
     cause the Participant to forfeit all rights in and to any such benefits
     remaining unpaid on the date of such breach:

     Until all payments hereunder have been made in full, such Participant shall
     not, directly or indirectly, become or serve as an officer, employee, owner
     or partner of any business which, in the opinion of the Plan Committee,
     competes in a material manner with the Company, without the prior written
     consent of the Company.

7.6  The provisions of the Plan shall be construed according to the laws of the
     State of Texas.

   EXECUTED this 1st day of April, 1995.


                                           TRINITY INDUSTRIES, INC.

                                           By: /s/ JACK CUNNINGHAM
                                              ----------------------------------
                                           Title: Vice President
                                                 -------------------------------

Attest:

 /s/ NEIL O. SHOOP
- ---------------------------------


                                      -7-

<PAGE>   8


                            TRINITY INDUSTRIES, INC.
                          SUPPLEMENTAL RETIREMENT PLAN

                                AMENDMENT NO. 1

WHEREAS, the Board of Directors wishes to amend the Trinity Industries, Inc.
Supplement Retirement Plan to include "earned and ultimately paid" incentive
compensation rather than "paid" incentive compensation.

NOW, THEREFORE, the annual "Compensation" used when computing any benefit
payable under this plan will include incentive compensation earned under the
Company's Incentive Compensation Agreement, "when earned" rather than "when
paid". To be included as "Compensation" the incentive compensation, must
ultimately be paid.

IN WITNESS HEREOF, the Company has executed this Amendment on this 14th day of
September, 1995, effective as of September 14, 1995.



TRINITY INDUSTRIES, INC.

By: /s/ JACK CUNNINGHAM
   --------------------------------------
   Jack Cunningham
   Vice President


<PAGE>   9




                          SUPPLEMENTAL RETIREMENT PLAN
                                 AMENDMENT NO. 2

         The Trinity Industries, Inc. Supplemental Retirement Plan, as amended
from time to time (the "Plan"), is hereby further amended, effective as of May
6, 1997, as set forth below.

         Any term which is not defined below shall have the meaning set forth
for such term in the Plan.

         1. Section 4.2 of the Plan is hereby amended and restated as follows:

    4.2  Except as provided in Section 4.3 hereof, benefits payable under this
         Plan will be paid in coordination with any benefits payable to a
         Participant from his Base Plan.

         2. Section 4.3 of the Plan is hereby amended and restated as follows:

    4.3  If a Participant's services with the Company are terminated prior to
         his eligibility to receive early, normal or late Retirement benefits
         under his Base Plan, he shall forfeit all right, for himself and his
         Beneficiary, to any benefits under this Plan; provided, however, that
         in the event that such services are terminated for any reason (other
         than death or disability) after the occurrence of a "Change in Control"
         (as hereinafter defined), then such Participant shall not forfeit his
         right to benefits hereunder and shall be entitled to the difference
         between (i) his "accrued benefit" as determined under his Base Plan as
         of the date of such termination by not taking into account Sections
         401(a)(17) and 415 of the Code and (ii) his "accrued benefit"
         determined under


<PAGE>   10




         such Base Plan as of the date of such termination by taking into
         account Sections 401(a)(17) and 415 of the Code, with the actuarial
         value of such difference being payable to the Employee in a lump sum
         cash payment within five days following such termination.

         For purposes of this Plan, a "Change in Control" shall be deemed to
         have occurred if the event set forth in any one of the following
         paragraphs shall have occurred:

                   (I) any Person is or becomes the Beneficial Owner, directly
         or indirectly, of securities of Trinity Industries, Inc. ("Trinity")
         (not including in the securities beneficially owned by such Person any
         securities acquired directly from Trinity or its affiliates)
         representing 30% or more of the combined voting power of Trinity's
         then outstanding securities, excluding any Person who becomes such a
         Beneficial Owner in connection with a transaction described in clause
         (i) of paragraph (III) below; or

                   (II) the following individuals cease for any reason to
         constitute a majority of the number of directors then serving:
         individuals who, on May 6, 1997, constitute the Board and any new
         director (other than a director whose initial assumption of office is
         in connection with an actual or threatened election contest, including
         but not limited to a consent solicitation, relating to the election of
         directors of Trinity) whose appointment or election by the Board or
         nomination for election by Trinity's stockholders was approved or
         recommended by a vote of at


                                       2

<PAGE>   11




         least two-thirds (2/3) of the directors then still in office who either
         were directors on May 6, 1997, or whose appointment, election or
         nomination for election was previously so approved or recommended; or

                 (III) there is consummated a merger or consolidation of Trinity
         or any direct or indirect subsidiary of Trinity with any other
         corporation, other than (i) a merger or consolidation which would
         result in the voting securities of Trinity outstanding immediately
         prior to such merger or consolidation continuing to represent (either
         by remaining outstanding or by being converted into voting securities
         of the surviving entity or any parent thereof) at least 60% of the
         combined voting power of the securities of Trinity or such surviving
         entity or any parent thereof outstanding immediately after such merger.
         or consolidation, or (ii) a merger or consolidation effected to
         implement a recapitalization of Trinity (or similar transaction) in
         which no Person is or becomes the Beneficial Owner, directly or
         indirectly, of securities of Trinity (not including in the securities
         Beneficially Owned by such Person any securities acquired directly from
         Trinity or its Affiliates other than in connection with the acquisition
         by the Company or its affiliates of a business) representing 30% or
         more of the combined voting power of Trinity's then outstanding
         securities; or

                   (IV) the stockholders of Trinity approve a plan of complete
         liquidation or dissolution of Trinity or there is consummated an
         agreement for the sale or disposition by Trinity of all or


                                       3

<PAGE>   12


         substantially all of Trinity's assets, other than a sale or disposition
         by Trinity of all or substantially all of Trinity's assets to an
         entity, at least 60% of the combined voting power of the voting
         securities of which are owned by stockholders of Trinity in
         substantially the same proportions as their ownership of Trinity
         immediately prior to such sale.

         For purposes hereof:

         "Affiliate" shall have the meaning set forth in Rule 12b-2 promulgated
         under Section 12 of the Exchange Act.

         "Beneficial Owner" shall have the meaning set forth in Rule 13d-3 under
         the Exchange Act.

         "Exchange Act" shall mean the Securities Exchange Act of 1934, as
         amended from time to time.

         "Person" shall have the meaning given in Section 3(a)(9) of the
         Exchange Act, as modified and used in Sections 13(d) and 14(d) thereof,
         except that such term shall not include (i) Trinity or any of its
         subsidiaries, (ii) a trustee or other fiduciary holding securities
         under an employee benefit plan of Trinity or any of its Affiliates,
         (iii) an underwriter temporarily holding securities pursuant to an
         offering of such securities or (iv) a corporation owned, directly or
         indirectly, by the stockholders of Trinity in substantially the same
         proportions as their ownership of stock of Trinity.

         3. Section 4.6 of the Plan is hereby amended and restated as follows:


                                       4


<PAGE>   13


         4.6  Except as provided in Section 4.3 hereof, the benefits payable
              under this Plan to a Participant who is eligible to receive
              benefits from his Base Plan shall be made according to the form of
              payment elected or mandated under the Base Plan and shall commence
              at the same time as such Base Plan benefits.

         4.   Section 6.1 of the Plan is hereby amended and restated as follows:

         6.   The Plan may be amended or terminated in whole or in part from
              time to time by the Board; provided, however, that no such action
              shall adversely affect Participants who shall have begun receiving
              benefits from the Plan; and provided further, that during (a) the
              period commencing on the date of occurrence of a Potential Change
              in Control (as defined below) and ending on the earlier of (i) six
              months after the later of (1) the expiration of six months
              following the occurrence of such Potential Change in Control or
              (2) the Board's adoption of a resolution certifying that a
              Potential Change in control ceases to exist or (ii) the date of
              occurrence of a Change in Control, and (b) a period of two years
              following the occurrence of a Change in Control, the Plan may not
              be terminated or amended in any manner adverse to Participants or
              Beneficiaries (including, but not limited to, any adverse
              amendment of this Section 6.1 or any adverse amendment to the
              proviso in Section 4.3 hereof).

              For purposes of this Plan:

              A "Potential Change in Control" shall be deemed to have occurred
              if the event set

                                       5

<PAGE>   14


         forth in any one of the following paragraphs shall have occurred:

                      (1)  Trinity enters into an agreement, the consummation of
                which would result in the occurrence of a Change in Control;

                      (2) Trinity or any Person publicly announces an intention
                to take or to consider taking actions which, if consummated,
                would constitute a Change in Control;

                      (3) any Person becomes the Beneficial Owner, directly or
                indirectly, of securities of Trinity representing 15% or more of
                either the then outstanding shares of common stock of Trinity or
                the combined voting power of Trinity's then outstanding
                securities (not including in the securities beneficially owned
                by such Person any securities acquired directly from Trinity or
                its affiliates); or

                      (4) the Board adopts a resolution to the effect that, for
                purposes of this Plan, a Potential Change in Control has
                occurred.

         5. The second paragraph of Section 7.5 of the Plan is hereby amended by
adding to the end thereof the following clause:

         ; provided, however, that the provisions of this Section 7.5 shall be
         of no force and effect from and after the occurrence of a Change in
         Control (as defined above).


                                       6

<PAGE>   15


         IN WITNESS WHEREOF, the Company has caused this Amendment to be
executed by a duly authorized officer of the Company as of the day and year
first above written.

                                 TRINITY INDUSTRIES, INC.

                                 By: /s/ W. RAY WALLACE
                                    ----------------------------------


                                       7


<PAGE>   1

                            TRINITY INDUSTRIES, INC.

                        DEFERRED PLAN FOR DIRECTOR FEES

     THIS PLAN, made and executed at Dallas, Texas by Trinity Industries, Inc.,
a Delaware corporation (the "Company"), is being established primarily for the
purpose of providing to members of the Board of Directors of the Company the
ability to defer receipt of all or part of their compensation as a Director.

                                       I.

                                   DEFINITIONS

     Whenever used herein, the following terms shall have the meaning set forth
below:

     (a)  "Account" means the separate memorandum account maintained by the
          Company for each Director who elects to participate in the Plan.

     (b)  "Adjustment Date" means the last day of each calendar quarter and such
          other dates as the Administrative Committee in its discretion may
          prescribe.

     (c)  "Administrative Committee" means a committee composed of at least
          three individuals appointed by the Compensation Committee of the Board
          of Directors of the Company to administer the adjustment of
          participant accounts as provided herein, each of whom shall serve in
          such office until a successor is appointed by the Compensation
          Committee or until such person's death, resignation or removal by the
          Compensation Committee.

     (d)  "Annual Fee" means the retainer and meeting fees paid to a Director
          for services rendered as a member of the Board of Directors of the
          Company, including fees for services on a committee, for the Annual
          Period.


<PAGE>   2

     (e)  "Annual Period" means the period commencing with the Annual Meeting of
          Stockholders of the Company at which the Director is elected and
          ending with the next Annual Meeting of Stockholders of the Company.

     (f)  "Board of Directors" means the Board of Directors of the Company.

     (g)  "Change of Control" means the occurrence of either of the following:

          (1)  any person (as such term is used in Section 13(d) and 14(d)(2) of
               the Securities Exchange Act of 1934, as amended (the "Exchange
               Act")), shall become the beneficial owner (within the meaning of
               Rule l3d-3 under the Exchange Act) of 30% or more of the
               Company's outstanding Common Stock; or

          (2)  during any period of two consecutive years, individuals who at
               the beginning of such period constitute the entire Board of
               Directors shall cease for any reason to constitute a majority
               thereof unless the election, or the nomination for election by
               the Company's stockholders, of each new director was approved by
               a vote of at least two-thirds of the directors then still in
               office who were directors at the beginning of the period.

     (h)  "Competitive Business Entity" means any business, proprietorship,
          partnership, corporation engaged in business activities in the same or
          similar markets in which the Company, its subsidiaries, and affiliates
          operate or plan to operate.

     (i)  "Director" means a member of the Board of Directors.

     (j)  "Plan" means the Trinity Industries, Inc. Deferred Plan for Director
          Fees as set forth in this instrument and as it may hereafter be
          amended from time to time.

                                       2

<PAGE>   3

     (k)  "Termination Date" means the date upon which a Director ceases to be a
          member of the Board of Directors.

                                       II.

                                PLAN DESCRIPTION

     A Director may elect to defer receipt of all or a specified part of his or
her Annual Fee. The Company will maintain an Account for each participant into
which the deferred portion of the Annual Fee will be credited on the date the
Director would otherwise be entitled to receive such fee. Sums credited to the
Account will accrue an interest equivalent from the date that they are credited
at a rate equal to the prime rate of interest as announced by Texas Commerce
Bank Dallas as of the first business day following each Adjustment Date. The
accrued interest equivalent shall be credited to the Account on each Adjustment
Date, and shall thereafter be subject to subsequent accruals of an interest
equivalent.

     In lieu of having the Account credited with an interest equivalent as
provided in the preceding paragraph, a Director may elect to have the deferred
portion of his or her Annual Fee treated as if invested in units of Common Stock
of the Company ("Stock Units"). Stock Units will be deemed to be purchased on
the date that the deferred portion of the Annual Fee otherwise would be
credited to the Account. A Stock Unit shall be deemed to be equal in value to a
share of Common Stock of the Company at the closing price of the Company's
Common Stock on the New York Stock Exchange on the date of particular
determination, or if the date of determination is not a trading day on the New
York Stock Exchange, on the next succeeding trading day. Dividend equivalents in
the form of additional Stock Units will be credited to the Account as of the
date of payment of cash dividends on the Company's Common Stock. In case of a
split or other subdivision of the Company's Common Stock,

                                       3


<PAGE>   4


Stock Units will be similarly deemed to be split or subdivided. At each
Adjustment Date, a Participant's Account that has been credited with Stock
Units shall be valued on the basis of shares of the Company's Common Stock at
that date, taking into account any increase or decrease in the market value of
the Company's Common Stock.

     A director must affirmatively elect to have the deferred portion of his or
her Annual Fee treated as if invested in Stock Units. Such an election must be
made prior to the first day of the Annual Period and shall apply to the deferred
portion of the Annual Fee for the entire Annual Period. The failure to timely
elect to have the deferred portion of his or her Annual Fee treated as if
invested in Stock Units will be deemed an election to have the deferred portion
of his or her Annual Fee credited with an interest equivalent. Any amounts
previously treated as invested in Stock Units will continue to be so treated as
invested in Stock Units, except that at any time following a Director's
Termination Date, if he or she has not elected to be paid a lump sum, then he or
she may elect, by written notice to the Company, to have the Stock Units in his
or her Account converted into a dollar value as of the next Adjustment Date to
thereafter accrue an interest equivalent on the value of the Account.

     The amount payable from a participant's Account shall be determined on the
basis of value of the Account as of the Adjustment Date last preceding the date
of payment plus any deferrals credited to and less any distributions made from
such Account since such Adjustment Date. The amount of each payment made with
respect to an Account and any forfeiture amounts applied pursuant to Article X
shall be deducted from the balance of such Account at the time of payment or
forfeiture.

     The participant's Account, as determined in accordance with the preceding
paragraph, will be distributed to the participant, in accordance with the
participant's election, either (i) in


                                       4

<PAGE>   5

annual installments not exceeding ten (10) years or (ii) in a lump sum, with
such installments to begin or lump sum payment to be made, as soon as
practicable following the participant's Termination Date. Any such election by
the participant must be made prior to the participant's Termination Date and
will be irrevocable on and after the Termination Date. If the participant fails
to make an election, the participant's Account will be paid in annual
installments over a ten (10) year period. If the participant is paid in
installments, the interest equivalent sum will continue to accrue on the
undisbursed balance of the Account and the Stock Units will continue to be
credited with dividend equivalents on the Stock Units remaining in the Account.
All distributions will be deemed to be made pro rata from the interest
equivalent balance and from the value of Stock Units, with the portion of the
distribution from Stock Units being treated as if an equivalent number of Stock
Units had been sold (without commission or other expense) as of the last
Adjustment Date in order to make the distribution.

     The Account of a participant who, subsequent to his or her Termination
Date, becomes a proprietor, officer, partner, employee, or otherwise affiliated
with a Competitive Business Entity may, if directed by the Board of Directors in
its sole discretion, be paid immediately in a lump sum the value of his or her
account as of the last Adjustment Date.

     Upon the death of a participant, the value of the Account shall be payable
to such beneficiary or beneficiaries as the participant shall have designated in
writing to the Company (or to his or her estate if no such beneficiary has been
designated) in full as soon as practicable following the date of his or her
death.

                                       5


<PAGE>   6


                                      III.

                        ELECTION TO BECOME A PARTICIPANT

     A Director desiring to become a participant shall execute an "Election and
Agreement to Defer Director's Fees" as described and set forth in the attachment
to this Plan labeled Exhibit "A". This election shall be made in advance of the
performance of services during the Annual Period for which an election to
participate in this Plan is being made and shall be irrevocable.

                                       IV.

                             TERMINATION OF ELECTION

     Participation in the Plan will be automatically terminated at the next
Annual Meeting of Stockholders of the Company unless the participant executes a
new election for the next Annual Period pursuant to Article III. All amounts
credited to a participant's Account shall remain in the Account to be
distributed or forfeited in accordance with the provisions of this Plan.

                                       V.

                             MAINTENANCE OF ACCOUNT

     The Company shall maintain an Account on behalf of each participant in the
form and manner prescribed by acceptable accounting standards, and shall make a
report of same in writing within 90 days after the end of Annual Period to each
participant.

                                       VI.

                                  UNFUNDED PLAN

     This Plan shall be unfunded for tax purposes and for purposes of Title I of
the ERISA. Neither the Company nor the Board of Directors shall be deemed to be
a trustee of any

                                       6


<PAGE>   7




amounts to be paid under this Plan. Said amounts shall continue for all purposes
to be a part of the general funds of the Company, and no person other than the
Company shall, by virtue of the provisions of this Plan, have any interest in
such funds. To the extent that any person acquires a right to receive payments
from the Company under this Plan, such right shall be no greater than the right
of any unsecured general creditor of the Company. Any liability of the Company
to any participant with respect to a payment to be made under this Plan shall be
based solely upon any contractual obligations which may be created by or
pursuant to this Plan; no such obligation shall be deemed to be secured by any
pledge or any encumbrance on any property of the Company.

                                      VII.

                       AMENDMENT AND TERMINATION OF PLAN

     The Board of Directors may terminate this Plan at any time. A termination
of the Plan shall be effective at the end of the Annual Period in which the
Directors vote to terminate the Plan. The Board of Directors may amend this
Plan at any time.

     Any provision of this Plan to the contrary notwithstanding, no amendment to
or termination of this Plan shall reduce the amounts actually credited to a
participant's Account as of the date of such amendment or termination, or
further defer the dates for the payment of such amounts, without the consent of
the affected participant.

     The preceding provisions of this Article to the contrary notwithstanding,
no action taken on or within two years following a Change of Control to amend or
terminate this Plan shall be effective unless written consent thereto is
obtained from a majority of the participants who were Directors immediately
prior to such Change of Control.

                                       7


<PAGE>   8

                                      VIII.

                           EFFECTIVE DATE AND DURATION

     This Plan shall become effective as of July 17, 1996, the date of the next
Annual Meeting of Stockholders of the Company. This Plan shall remain in effect
until it is terminated by the Board of Directors in accordance with Article VII
above.

                                       IX.

                                  GOVERNING LAW

     This Plan and the rights of all persons under the Plan shall be construed
in accordance with and governed by the laws of the State of Texas, wherein the
principal office of the Company is located.

                                       X.

                       OPTION TO REQUEST IMMEDIATE PAYOUT

     In lieu of any other benefits or payments to be made pursuant to this Plan,
each participant shall have the right at any time to elect a lump sum payment in
an amount equal to:

     (a)  the amount credited to the participant's Account, minus

     (b)  a forfeiture amount equal to 20% of (a) above; provided, however, that
          if the election is made on or within two years following the date a
          Change of Control occurs, such forfeiture amount shall be determined
          substituting 10% for 20%.

     A participant's election for an immediate payout pursuant to this Article
must be in the form of a written notice provided to the Administrative
Committee. The Administrative Committee shall notify the Company of the election
and the amount so determined shall be paid to the participant no later than 15
days following receipt of notice by the Administrative


                                       8

<PAGE>   9

Committee. Any amount remaining credited to the participant's Account shall be
forfeited at the time payment is made.

                                      XI.

                            RESTRAINTS ON ALIENATION

     Subject to Article X hereof, no participant or beneficiary of a participant
shall have the right or power to anticipate, by assignment or otherwise, any
future payment to be made under this Plan, or any portion thereof; nor, in
advance of actually receiving the same, shall any participant or beneficiary
have the right or power to sell, transfer, encumber or in anywise charge same;
nor shall any future payment to be made under this Plan, or any portion of same,
be subject to any divorce, execution, garnishment, attachment, insolvency,
bankruptcy or other legal proceeding of any character, or legal sequestration,
levy or sale or in any event or manner be applicable or subject, voluntarily or
involuntarily, to the payment of such participant's or beneficiary's debts or
other obligations.

     IN WITNESS WHEREOF, this Plan has been executed on this 25th day of June,
1996, to be effective as of July 17, 1996.

                                             TRINITY INDUSTRIES, INC.

                                             By:
                                                ------------------------------
                                                W. Ray Wallace, Chairman,
                                                President and Chief Executive
                                                Officer

                                       9


<PAGE>   10


                             AMENDMENT NO. 1 TO THE
                            TRINITY INDUSTRIES, INC.
                         DEFERRED PLAN FOR DIRECTOR FEES

     Pursuant to the provisions of Article VII thereof, the Trinity Industries,
Inc. Deferred Plan for Director Fees (the "Plan") is hereby amended effective as
of September 10, 1998 in the following respects only:

     FIRST: Section (g) of Article I of the Plan is hereby amended by
restatement in its entirety to read as follows:

     (g)  A "Change of Control" shall be deemed to have occurred if the event
          set forth in any one of the following paragraphs shall have occurred:

          (I)   any Person is or becomes the Beneficial Owner, directly or
                indirectly, of securities of the Company (not including in the
                securities beneficially owned by such Person any securities
                acquired directly from the Company or its affiliates)
                representing 30% or more of the combined voting power of the
                Company's then outstanding securities, excluding any Person who
                becomes such a Beneficial Owner in connection with a transaction
                described in clause (i) of paragraph (III) below; or

          (II)  the following individuals cease for any reason to constitute a
                majority of the number of directors then serving: individuals
                who, on May 6, 1997, constitute the Board of Directors and any
                new director (other than a director whose initial assumption of
                office is in connection with an actual or threatened election
                contest, including but not limited to a consent solicitation,
                relating to the election of directors of the Company) whose
                appointment or election by the Board of Directors or nomination
                for election by the Company's stockholders was approved or
                recommended by a vote of at least two-thirds (2/3) of the
                directors then still in office who either were directors on May
                6, 1997, or whose appointment, election or nomination for
                election was previously so approved or recommended; or

          (III) there is consummated a merger or consolidation of the Company or
                any direct or indirect subsidiary of the Company with any other
                corporation, other than (i) a merger or consolidation which
                would result in the voting securities of the Company outstanding
                immediately prior to such merger or consolidation continuing to
                represent (either by remaining outstanding or by being converted
                into voting securities of the surviving entity or any parent
                thereof) at least 60% of the combined voting power of the
                securities of the Company or such surviving entity or any parent
                thereof outstanding immediately after such merger or
                consolidation, or (ii) a merger or consolidation effected to
                implement a recapitalization of the Company (or similar
                transaction) in




<PAGE>   11




                which no Person is or becomes the Beneficial Owner, directly or
                indirectly, of securities of the Company (not including in the
                securities Beneficially Owned by such Person any securities
                acquired directly from the Company or its Affiliates other than
                in connection with the acquisition by the Company or its
                affiliates of a business) representing 30% or more of the
                combined voting power of the Company's then outstanding
                securities; or

          (IV)  the stockholders of the Company approve a plan of complete
                liquidation or dissolution of the Company or there is
                consummated an agreement for the sale or disposition by the
                Company of all or substantially all of the Company's assets,
                other than a sale or disposition by the Company of all or
                substantially all of the Company's assets to an entity, at least
                60% of the combined voting power of the voting securities of
                which are owned by stockholders of the Company in substantially
                the same proportions as their ownership of the Company
                immediately prior to such sale.

          For purposes hereof:

          "Affiliate" shall have the meaning set forth in Rule l2b-2 promulgated
          under Section 12 of the Exchange Act.

          "Beneficial Owner" shall have the meaning set forth in Rule 13d-3
          under the Exchange Act.

          "Exchange Act" shall mean the Securities Exchange Act of 1934, as
          amended from time to time.

          "Person" shall have the meaning given in Section 3(a)(9) of the
          Exchange Act, as modified and used in Sections 13(d) and 14(d)
          thereof, except that such term shall not include (i) the Company or
          any of its subsidiaries, (ii) a trustee or other fiduciary holding
          securities under an employee benefit plan of the Company or any of its
          Affiliates, (iii) an underwriter temporarily holding securities
          pursuant to an offering of such securities, or (iv) a corporation
          owned, directly or indirectly, by the stockholders of the Company in
          substantially the same proportions as their ownership of stock of the
          Company.

     SECOND: The third sentence of the first paragraph of Article II of the Plan
is hereby amended by restatement in its entirety to read as follows:

     Sums credited to the Account will accrue an interest equivalent from the
     date that they are credited at a rate equal to the prime rate of interest
     as announced by Chase Bank of Texas, N.A. or its successor in interest, as
     of the first business day following each Adjustment Date.

                                      -2-


<PAGE>   12

     THIRD: The fifth paragraph of Article II of the Plan is hereby amended by
restatement in its entirety to read as follows:

          The participant's Account, as determined in accordance with the
     preceding paragraph, will be distributed to the participant, in accordance
     with the participant's election, either (i) in annual installments not
     exceeding ten (10) years or (ii) in a lump sum, with such installments to
     begin or lump sum payment to be made, as soon as practicable following the
     participant's Termination Date. Any such election by the participant must
     be made on the "Election and Agreement to Defer Director's Fees" as
     described and set forth in the attachment to this Plan labeled Exhibit "A."
     Such distribution election must be made in advance of the performance of
     services during the Annual Period for which an election to participate in
     the Plan is made and shall be irrevocable unless and until a new "Election
     and Agreement to Defer Director's Fees" is completed for a subsequent
     Annual Period. Upon a participant's Termination Date, the participant's
     distribution shall be made in accordance with the distribution election
     made on the "Election and Agreement to Defer Director's Fees" for the
     Annual Period ending concurrently with or immediately prior to the
     participant's Termination Date. If the participant fails to make an
     election, the participant's Account will be paid in annual installments
     over a ten (10) year period. If the participant is paid in installments,
     the interest equivalent sum will continue to accrue on the undisbursed
     balance of the Account and the Stock Units will continue to be credited
     with dividend equivalents on the Stock Units remaining in the Account. All
     distributions will be deemed to be made pro rata from the interest
     equivalent balance and from the value of Stock Units, with the portion of
     the distribution from Stock Units being treated as if an equivalent number
     of Stock Units had been sold (without commission or other expense) as of
     the last Adjustment Date in order to make the distribution. The preceding
     provisions of this paragraph to the contrary notwithstanding, in the event
     that a participant's Termination Date occurs on or after a Change of
     Control, the participant's Account will be distributed to the participant
     either in a lump sum or in annual installments not exceeding ten (10)
     years, whichever is elected by the participant on a separate election form
     for such purpose, which election shall be made at the time of the
     participant's initial election to participate in the Plan or, if later, on
     or before July 20, 1999 and shall be irrevocable; provided, however, that
     the participant may make, revoke or change this distribution election
     subsequent to the initial election with the new election to be effective
     only in the event that the new election is made at least 12 months prior to
     the date payments under this provision commence.

     FOURTH: The first paragraph of Article X of the Plan is hereby amended by
restatement in its entirety to read as follows:

          In lieu of any other payments to be made pursuant to this Plan, each
     participant shall have the right at any time to elect a lump sum payment in
     an amount equal to:

          (a)  the amount credited to the participant's Account, minus


                                      -3-

<PAGE>   13




          (b)  a forfeiture amount equal to 20% of (a) above; provided, however,
               that if the election (I) is made at any time following a Change
               of Control, or (II) is made by a participant receiving
               installment payments under this Plan, such forfeiture amount
               shall be determined substituting 10% for 20%.

     IN WITNESS WHEREOF, this Amendment has been executed this _______ day of
__________________, 1999.


                                             TRINITY INDUSTRIES, INC.



                                             By
                                               --------------------------------
                                               Title:




                                      -4-


<PAGE>   1
                    DEFERRED COMPENSATION PLAN AND AGREEMENT

THIS PLAN AND AGREEMENT made and entered into as of the ____ day of __________,
1999, between TRINITY INDUSTRIES, INC., a Delaware Corporation with its
principle office at 2525 Stemmons Freeway, Dallas, Texas 75207 (hereinafter
called the "Company") and _____________ , an individual (hereinafter called
"Officer");

                                  WITNESSETH:

     WHEREAS, Officer is in the employ of the Company and serves in a capacity
which will develop and expand the business of the Company; and

     WHEREAS, in recognition of Officer's valued services as an employee and
officer of the Company, and as an inducement to Officer to continue to serve the
Company in the future, the Company desires to provide certain benefits for
Officer and his designated beneficiary through a plan of deferred compensation,
as hereinafter set forth; and

     WHEREAS, Officer is willing to remain in the employ of the Company and to
have the Company defer a portion of his annual compensation in order to provide
such benefits, as hereinafter set forth.

     NOW, THEREFORE, in consideration of the premises and the terms, conditions
and covenants hereinafter set forth, the Company and Officer hereby agree as
follows:

     1.   Deferred Compensation Account. The Company shall establish an account
on the books of the Company in the name of Officer to which will be accrued
deferred compensation in an amount equal to ten percent (10%) of Officer's
combined annual base salary and incentive compensation, payable in the manner
and subject to the conditions hereinafter set forth. Base salary is defined as
that amount specifically approved by the Board of Directors as base salary and
excludes other payments such as car allowance, insurance reimbursements, etc.
Incentive compensation shall mean all amounts earned under a specific plan for a
given year whether payable currently or over a period of future years. Credits
to such account will accrue annually, at the rate of ten per cent (10%) of
Officers combined annual base salary and incentive compensation, commencing with
the Company's fiscal year ended March 31, 1999 and, subject to the annual review
of this Plan by the Board of Directors of the Company, continuing in like matter
for each of the Company's fiscal years thereafter for so long as Officer shall
continue his active, full-time employment with the Company.

     2.   Administration of Account. The Company shall have the right to
segregate from the other general assets of the Company the sums which accrue
monthly hereunder as deferred compensation. Officer's deferred compensation
account shall be credited with interest at the prime rate as published by Chase
Bank of Texas, N.A. or its successor. Neither Officer or his designated
beneficiary shall at any time have any interest in accrued sums which are so
segregated and/or invested and reinvested, and such funds, as they are from time
to time


<PAGE>   2

constituted, shall at all times remain assets of the Company subject to the
claims of the general creditors of the Company.

     3.   Payment of Deferred Compensation. Subject to the conditions
hereinafter set forth, the deferred compensation accrued hereunder and shown to
Officer's credit on the books of the Company shall be payable upon the
termination of the active, full-time employment of Officer for any reason
whatsoever, and shall be paid in such form as Officer may elect from the
following two alternatives:

          (i)  Payment may be made in annual periodic payments for specified
               number of years, not fewer than 5 nor in excess of 20, with the
               first payment to be made one (1) year and one (1) day from the
               date in which Officer's termination occurs and subsequent
               payments to be made on the same date of each succeeding year,
               where the payment made during each year shall be in an amount
               equal to a fraction of the amount shown to Officer's credit on
               the books of the Company as of the last day of the month
               preceding the month in which the payment is made, and where such
               fraction for each payment shall be one (1) divided by the number
               of payments remaining (including the current payment).
               Notwithstanding the preceding, at any time prior to receipt of
               all remaining installments under this paragraph, Officer (of
               Officer's beneficiary in the event of Officer's death) may elect
               a lump sum payment in an amount equal to the total amount
               remaining shown to Officer's credit on the books of the Company
               as of the last day of the month preceding the month in which the
               election is made, minus a forfeiture amount equal to 10% of such
               total amount.

          (ii) Complete payment may be made in a lump sum paid on the first day
               of the month following the date of Officer's termination of
               employment.

Officer's election pursuant to this paragraph must be made as of the effective
date of this amendment and, except as provided below, shall be irrevocable. In
the absence of an election, payment shall be made in the form of annual periodic
payments over a period of 20 years. Officer may change his distribution election
once during any calendar year with the new election to be effective only in the
event that the date of Officer's termination of employment with the Company is
at least 12 months after the date of the new election. All payments shall be
paid to Officer if living, or if not living, to his designated beneficiary or,
upon failure to make such designation or if the designated beneficiary shall
predecease Officer, to Officer's estate.

Notwithstanding the foregoing, in the event that Officer's termination of
employment with the Company occurs on or within two years after a "Change in
Control" of the Company, the amount to the credit of Officer will be distributed
to Officer either in a lump sum or in annual installments not exceeding five (5)
years, whichever is elected by Officer as of the effective date of this
amendment. In the absence of an election, payment shall be made in a lump sum
within five days of termination following a "Change in Control." Officer may
change this election at any time with the new election to be effective only in
the event that the termination of employment with the Company is at least 12
months after the date of the new election. If


                                       2

<PAGE>   3


installment payments are elected, the method of distribution shall be similar to
the method described for installment payments under the preceding paragraph.

     For purposes hereof, a "Change in Control" of the Company shall be deemed
     to have occurred if the event set forth in any one of the following
     paragraphs shall have occurred:

         (I)   any Person is or becomes the Beneficial Owner, directly or
               indirectly, of securities of the Company (not including in the
               securities beneficially owned by such Person any securities
               acquired directly from the Company or its affiliates)
               representing 30% or more of the combined voting power of the
               Company's then outstanding securities, excluding any Person who
               becomes such a Beneficial Owner in connection with a transaction
               described in clause (i) of paragraph (III) below; or

        (II)   the following individuals cease for any reason to constitute a
               majority of the number of directors then serving: individuals
               who, on May 6, 1997, constitute the Board of Directors of the
               Company and any new director (other than a director whose initial
               assumption of office is in connection with an actual or
               threatened election contest, including but not limited to a
               consent solicitation, relating to the election of directors of
               the Company) whose appointment or election by the Board of
               Directors of the Company or nomination for election by the
               Company's stockholders was approved or recommended by a vote of
               at least two-thirds (2/3) of the directors then still in office
               who either were directors on May 6, 1997, or whose appointment,
               election or nomination for election was previously so approved or
               recommended; or

       (III)   there is consummated a merger or consolidation of the Company or
               any direct or indirect subsidiary of the Company with any other
               corporation, other than (i) a merger or consolidation which would
               result in the voting securities of the Company outstanding
               immediately prior to such merger or consolidation continuing to
               represent (either by remaining outstanding or by being converted
               into voting securities of the surviving entity or any parent
               thereof) at least 60% of the combined voting power of the
               securities of the Company or such surviving entity or any parent
               thereof outstanding immediately after such merger or
               consolidation, or (ii) a merger or consolidation effected to
               implement a recapitalization of the Company (or similar
               transaction) in which no Person is or becomes the Beneficial
               Owner, directly or indirectly, of securities of the Company (not
               including in the securities Beneficially Owned by such person any
               securities acquired directly from the Company or its Affiliates
               other than in connection with the acquisition by the Company or
               its affiliates of a business) representing 30% or more of the
               combined voting power of the Company's then outstanding
               securities; or


                                       3
<PAGE>   4


        (IV)   the stockholders of the Company approve a plan of complete
               liquidation or dissolution of the Company or there is consummated
               an agreement for the sale or disposition by the Company of all or
               substantially all of the Company's assets, other than a sale or
               disposition by the Company of all or substantially all of the
               Company's assets to an entity, at least 60% of the combined
               voting power of the voting securities of which are owned by
               stockholders of the Company in substantially the same proportions
               as their ownership of the Company immediately prior to such date.

     For purposes hereof:

     "Affiliate" shall have the meaning set forth in Rule l2b-2 promulgated
     under Section 12 of the Exchange Act.

     "Beneficial Owner" shall have the meaning set forth in Rule l3d-3 under the
     Exchange Act.

     "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended
     from time to time.

     "Person" shall have the meaning given in Section 3(a)(9) of the Exchange
     Act, as modified and used in Sections 13(d) and 14(d) thereof, except that
     such term shall not include (i) the Company or any of its subsidiaries,
     (ii) a trustee or other fiduciary holding securities under an employee
     benefit plan of the Company or any of its Affiliates, (iii) an underwriter
     temporarily holding securities pursuant to an offering of such securities,
     or (iv) a corporation owned, directly or indirectly, by the stockholders of
     the Company in substantially the same proportions as their ownership of
     stock of the Company.

     4.   Conditions. The payment of deferred compensation to Officer, as
hereinabove provided, shall be subject to the following conditions, the breach
of either of which shall cause the forfeiture of all rights in and to any and
all amounts of deferred compensation remaining unpaid upon the date of any such
breach:

          a.   Commencing with the date of termination of the active, full-time
     employment of Officer and continuing until all payments hereunder have been
     made in full, Officer shall not, directly or indirectly, become or serve as
     an officer, employee, owner or partner of any business which competes in a
     material manner with the Company, without prior written consent of the
     Company.

          b.   Commencing with the date of termination of the active, full-time
     employment of Officer and continuing until all payments hereunder have been
     made in full, Officer shall be available for consultation in respect of
     matters pertaining to the business and financial affairs of the Company,
     upon the request of the Company and at such reasonable and convenient times
     and places and for such compensation therefor as may be mutually agreed
     upon.


                                       4
<PAGE>   5


Notwithstanding the foregoing, the conditions set forth in a. and b. above shall
be of no force and effect from and after the occurrence of a Change in Control
(as defined above).

     5.   Death. In the event of Officer's death prior to the receipt of any
or all of the installments of deferred compensation, such installments as are
then unpaid shall be paid to the beneficiary or beneficiaries designated in
writing and filed with the Secretary, of the Company by Officer during his
lifetime or, upon failure to make such designation or if such designee or
designees shall have predeceased Officer, then to Officer's estate. Officer
shall have the right to change the beneficiary designation from time to time by
instrument in writing delivered to the Secretary of the Company.

     6.   Nonassignability. Officer during his lifetime, and his designated
beneficiary or beneficiaries, after his death, shall not be entitled to commute,
encumber, sell or otherwise dispose of his or their rights to receive the
deferred compensation provided for herein, and the right thereto shall be
nonassignable and nontransferable and shall not be subject to execution,
attachment or similar process.

     7.   Participation in Other Plans. Nothing herein contained shall in any
manner modify, impair or effect the existing or future rights or interests of
Officer to receive any employee benefits to which he is or would otherwise be
entitled, or as a participant in the present or any future incentive bonus plan,
stock option plan or pension or profit sharing plan of the Company.

     8.   Benefit. This Agreement shall be binding upon and inure to the benefit
of any successor of the Company, including any person, firm, corporation or
other entity which, by merger, consolidation, purchase or otherwise, acquires
all or substantially all of the assets or business of the Company.

     9.   Amendment or Termination. This Agreement may be amended or terminated
in whole or in part by mutual written agreement of the parties hereto.

     10.  Election. Officer hereby elects, pursuant to paragraph 3 hereof, to
receive payment hereunder after termination following a "Change in Control" as
follows:

          [ ]  in annual installments (choose from 5 to 20) over a period of
               ____________ years, or

          [ ]  in a lump sum

          Officer hereby elects, pursuant to paragraph 3 hereof, to receive
          payment hereunder after termination within two years following a
          "Change in Control" as follows:

          [ ]  in annual installments (choose from 1-5) over a period of
               ____________ years, or

          [ ]  in a lump sum


                                       5
<PAGE>   6


     IN WITNESS WHEREOF, this Agreement has been executed by the parties hereto
as of the day and year first hereinabove written.

                                                  TRINITY INDUSTRIES, INC.

                                                  By:
                                                     --------------------------



                                                     --------------------------
                                                     Officer

I designate the following beneficiary(ies) in the event of my death.

     Primary, if living, otherwise to Secondary



     --------------------------                      --------------------------
     Name                                            Relationship


     Secondary


     --------------------------                      --------------------------
     Name                                            Relationship



     --------------------------                      --------------------------
     Officer's Signature                              Date


                                       6

<PAGE>   1
                             Financial Information

<TABLE>
<CAPTION>
                          Financial Table of Contents
                          ---------------------------
                 <S>      <C>
                 18       Selected Financial Data

                 18       Management's Discussion & Analysis of Financial
                          Condition & Results of Operations

                 23       Consolidated Income Statement

                 24       Consolidated Balance Sheet

                 25       Consolidated Statement of Cash Flows

                 26       Consolidated Statement of Stockholders' Equity

                 27       Notes to Consolidated Financial Statements

                 35       Report of Independent Auditors

                 36       Supplemental Information

                 36       Stockholder Information
</TABLE>



<PAGE>   2

          Selected Financial Data / Management's Discussion & Analysis


<TABLE>
<CAPTION>
    Selected Financial Data                                                         Year Ended March 31
                                                               -------------------------------------------------------
    (in millions except percent and per share data)                1999        1998       1997       1996       1995
                                                               ----------   ----------  ---------  --------   --------
<S>                                                            <C>            <C>        <C>        <C>        <C>
    Revenues                                                   $  2,926.9     2,473.0    2,234.3    2,241.7    2,064.3
    Operating profit                                           $    284.9       255.9      214.2      194.9      148.9

    Income from continuing operations                          $    185.3       103.7      113.7      101.3       73.4

    Income from discontinued operations, net of income taxes   $       --          --       23.8       12.5       15.7
    Net income                                                 $    185.3       103.7      137.5      113.8       89.1
    Total assets                                               $  1,684.9     1,573.9    1,356.4    1,426.6    1,400.5
    Long-term debt                                             $    120.6       149.6      178.6      206.4      242.9
    Stockholders' equity                                       $    959.1       887.5      809.5      746.0      641.2

    Stock data:
       Weighted average number of diluted shares outstanding         43.6        43.9       42.8       41.9       40.5
       Net income per diluted common share:
          Continuing operations                                $     4.25        2.36       2.66       2.42       1.81
          Discontinued operations                                      --          --       0.55       0.30       0.39
                                                               ----------     -------    -------    -------     ------
          Net income per share                                 $     4.25        2.36       3.21       2.72       2.20
    Dividends per share                                        $     0.69        0.68       0.68       0.68       0.68
    Book value per share                                       $    23.22       20.40      18.83      17.93      15.95
</TABLE>

Management's Discussion & Analysis of Financial Condition & Results of
Operations

Basis of Presentation

    Trinity Industries, Inc. is one of the nation's leading diversified
industrial manufacturers. Effective March 31, 1999, the Company changed the way
it reports segment results to provide more helpful information in accordance
with Statement of Financial Accounting Standards No. 131, "Disclosures about
Segments of an Enterprise and Related Information." Segment information is
reported for (i) the Railcar Group, (ii) the Industrial Group, (iii) the
Highway Construction Products Group, (iv) the Inland Barge Group, and (v) the
Concrete, Aggregate, & All Other group. See Notes to Consolidated Financial
Statements for further discussion of business segments. The following
discussion compares results from continuing operations of Trinity for fiscal
1999, 1998, and 1997.

1999 Compared With 1998 - Results of Operations

    Revenues were $2.93 billion in fiscal 1999 compared to $2.47 billion in
fiscal 1998, an 18.6% increase. Operating profit was $284.9 million in fiscal
1999 compared to $255.9 million in fiscal 1998, an 11.3% increase. Increased
revenues and operating profit were primarily attributable to the Railcar Group.
Selling, engineering, and administrative expenses declined as a percentage of
revenue to 5.8% from 6.6%. This decline is primarily a result of reduced legal
costs and pension expense, partially offset by increases in technology and
personnel costs to support the Company's growth.

    Other income/expense changed from $90 million expense in fiscal 1998 to
$11.5 million income in fiscal 1999. In fiscal 1998, other expense included a
litigation settlement of $70 million, while in fiscal 1999 other income
includes a net gain

                                       18

<PAGE>   3
    Management's Discussion & Analysis of Financial Condition & Results of
                                  Operations


on the sale of real estate and other assets in the first quarter of $22.1
million.

    Net income in fiscal 1999 increased 78.7% to $185.3 million, or $4.25 per
diluted share as compared to $103.7 million, or $2.36 per diluted share, in
fiscal 1998. Excluding the net gain and litigation settlement mentioned above,
earnings per share increased $0.57 per diluted share or 17% from fiscal 1998.

<TABLE>
<CAPTION>
    Railcar Group
    (in millions)                  1999          1998
                                ----------    -----------
<S>                             <C>          <C>
    Revenues                    $ 1,959.7     $ 1,303.0
    Operating Profit            $   248.1     $   177.2
    Operating Profit Margin          12.7%         13.6%
</TABLE>

    Revenues increased in the Railcar Group $656.7 million, or 50.4%, in fiscal
1999 due to high demand and the ongoing replacement cycle for railcars, which
also contributed to strong current railcar backlogs. Trinity is a manufacturer
of a broad product line serving various industries and a full-service provider
of railcar maintenance services, management services, and leasing alternatives
which provides more opportunity for stability during fluctuations in demand for
specific car types or services.

    Railcar Group operating profit increased by $70.9 million in the current
fiscal year to $248.1 million from $177.2 million in fiscal 1998. This 40%
increase is primarily a result of the increased volume in fiscal 1999. As a
percentage of revenues, operating profit declined primarily due to the product
mix of railcar sales.

<TABLE>
<CAPTION>
    Industrial Group
    (in millions)                  1999          1998
                                ----------    ----------
<S>                               <C>          <C>
    Revenues                      $ 284.2      $ 371.5
    Operating Profit              $  17.5      $  45.0
    Operating Profit Margin           6.2%        12.1%
</TABLE>

    Revenues in the Industrial Group decreased from $371.5 million in fiscal
1998 to $284.2 million in fiscal 1999, while operating profit decreased from
$45.0 million to $17.5 million. The decline in revenues is primarily due to the
sale of Beaird Industries, Inc. in the quarter ended June 30, 1998, as well as
softness in fittings and flange products and LPG products. The decline in
operating profit was attributable to the Beaird sale, continued price
competition in the fittings and flange business, primarily due to a weak energy
sector and increased imports as a result of the Asian Crisis, and the mild fall
and winter which impacted demand and competition for LPG products.

<TABLE>
<CAPTION>
    Highway Construction Products Group
    (in millions)                  1999          1998
                                 ---------    ----------
<S>                              <C>          <C>
    Revenues                     $   220.6    $    221.9
    Operating Profit             $    36.0    $     33.5
    Operating Profit Margin           16.3%         15.1%
</TABLE>

    Revenues in the Highway Construction Products Group were relatively
unchanged, while operating profit increased from $33.5 million in fiscal 1998
to $36.0 million. The slight decline in revenue was primarily a result of
delays by state government agencies in job lettings under the new federal
highway spending legislation. Improved operating margins in fiscal 1999
resulted from continued focus on cost reduction and efficiency.

    Federal funding for highway construction and improvements is forecasted to
increase up to 40% for approximately four and one-half years from the beginning
of fiscal 2000. Trinity is strategically positioned to serve the states that
will receive the most funding under the recently enacted legislation.

<TABLE>
<CAPTION>
    Inland Barge Group
    (in millions)                 1999           1998
                                ---------      ---------
<S>                             <C>            <C>
    Revenues                    $   202.9      $   339.9
    Operating Profit            $    14.2      $    32.0
    Operating Profit Margin           7.0%           9.4%
</TABLE>

    Revenues decreased in the Inland Barge Group $137.0 million, from $339.9
million in fiscal 1998, to $202.9 million in the current year. Operating profit
decreased by $17.8 million, from $32.0 million in fiscal 1998, to $14.2 million
in the current year. The decline in barge demand was primarily driven by
reduced grain export shipments and other factors which led to lower rates paid
to river freight carriers.

    The volume of barge orders increased in the third and fourth quarters of
fiscal 1999. The Company believes this signals a recovery in the barge business
and improved profitability in fiscal 2000. In the barge industry, the fleet
replacement



                                       19

<PAGE>   4
    Management's Discussion & Analysis of Financial Condition & Results of
                                  Operations


cycle and fleet age are important factors, and since nearly 40% of the nation's
barges are more than 20 years old, the long-term outlook for barges continues
to remain positive.

<TABLE>
<CAPTION>
    Concrete, Aggregate, & All Other
    (in millions)                   1999           1998
                                  ---------     ---------
<S>                               <C>           <C>
    Revenues                      $  259.5      $  236.7
    Operating Profit              $   28.7      $   22.5
    Operating Profit Margin           11.1%          9.5%
</TABLE>

    Revenues increased by $22.8 million in the Concrete, Aggregate, & All Other
group, from $236.7 million in fiscal 1998, to $259.5 million in the current
year. Operating profit in-creased by $6.2 million, or 27.6%. Better weather
conditions in fiscal 1999, internal expansion, and acquisitions contributed to
growth in concrete and aggregate revenues. The demand in residential,
commercial, and municipal construction in the markets served by the Company's
ready-mix concrete and aggregate businesses points to continued growth in this
business.

1998 Compared With 1997

    Record operating profits of $255.9 million were recorded for the fiscal
year ended March 31, 1998, an increase of $41.7 million, or 19.5%, compared to
fiscal 1997. This increase was due primarily to higher operating profit
recorded in the Railcar Group, Inland Barge Group, and Concrete, Aggregate, &
All Other group. The Highway Construction Products Group and Industrial Group
showed slight increases in operating profit. Revenues recorded for fiscal 1998
were $2.47 billion, an increase of $0.24 billion, or 10.8% from the previous
fiscal year.

    Selling, engineering, and administrative expenses increased to $163.1
million in fiscal 1998 from $142.5 million in fiscal 1997, but as a percentage
of revenue increased only slightly as the Company continues to invest in people
and systems to fuel additional growth. Other, net expense decreased to $0.9
million in fiscal 1998 from $12.0 million in the previous fiscal year primarily
due to the recording in fiscal 1997 of certain nonrecurring charges,
principally for valuation of production facilities determined to be in excess
of that required for future business operations.

<TABLE>
<CAPTION>
    Railcar Group
    (in millions)                   1998          1997
                                 ----------    ----------
<S>                              <C>           <C>
    Revenues                     $ 1,303.0     $ 1,247.3
    Operating Profit             $   177.2     $   155.4
    Operating Profit Margin           13.6%         12.5%
</TABLE>

    A surge in demand during fiscal 1998 contributed to revenues of $1.30
billion in fiscal 1998, a $55.7 million increase from fiscal 1997, and
contributed to railcar backlogs that were at record levels. Operating profit of
$177.2 million was reported in fiscal 1998, which is a $21.8 million, or 14%
increase compared to fiscal 1997. Improved production methods, cost reductions,
and volume increases resulted in improved margins.

<TABLE>
<CAPTION>
    Industrial Group
    (in millions)                   1998         1997
                                 ---------    ---------
<S>                              <C>          <C>
    Revenues                     $   371.5    $   327.6
    Operating Profit             $    45.0    $    42.5
    Operating Profit Margin           12.1%        13.0%
</TABLE>

    The Industrial Group benefited primarily from the general improvement in
the economy in fiscal 1998. Revenues were $371.5 million, which is a $43.9
million, or 13.4% increase over fiscal 1997. Operating profit was $45.0
million, or a 5.9% increase over fiscal 1997. Emphasis on protecting the
environment in the chemical and petroleum industries and continued strength in
new housing starts contributed to fiscal 1998 results.

<TABLE>
<CAPTION>
    Highway Construction Products Group
    (in millions)                   1998          1997
                                  ---------    ---------
<S>                               <C>          <C>
    Revenues                      $   221.9    $   192.7
    Operating Profit              $    33.5    $    29.7
    Operating Profit Margin            15.1%        15.4%
</TABLE>

    The Highway Construction Products Group recorded revenues for fiscal 1998
of $221.9 million, which is a $29.2 million, or 15.2% increase compared to
fiscal 1997. Operating profits were $33.5 million, which is a $3.8 million, or
12.8% increase compared to fiscal 1997. Improved results were due to market
acceptance of new highway guardrail products.



                                       20

<PAGE>   5
    Management's Discussion & Analysis of Financial Condition & Results of
                                  Operations


<TABLE>
<CAPTION>
    Inland Barge Group
    (in millions)                  1998          1997
                                 --------      --------
<S>                              <C>           <C>
    Revenues                     $  339.9      $  254.2
    Operating Profit             $   32.0      $   19.7
    Operating Profit Margin           9.4%          7.7%
</TABLE>

    The Inland Barge Group recorded revenues for fiscal 1998 of $339.9 million,
an $85.7 million or 33.7% increase over fiscal 1997. Operating profit was $32.0
million, a $12.3 million, or 62.4% increase over fiscal 1997. The inland river
hopper barge market was very strong in the first part of fiscal 1998 due to the
replacement cycle for barges, but order levels softened in the last two
quarters due to decreasing grain prices and other factors which affected rates
paid to river freight carriers.

<TABLE>
<CAPTION>
     Concrete, Aggregate, & All Other
    (in millions)                   1998        1997
                                  --------     --------
<S>                               <C>          <C>
    Revenues                      $ 236.7      $ 204.0
    Operating Profit              $  22.5      $  12.7
    Operating Profit Margin           9.5%         6.2%
</TABLE>

    The Concrete, Aggregate, & All Other group recorded revenues of $236.7
million, which is a $32.7 million, or 16.0% increase over fiscal 1997.
Operating profit was $22.5 million, which is a $9.8 million, or 77.2% increase
over 1997. The increase in revenues resulted from better weather conditions
than in the prior year and the Company's emphasis on expanding its ready-mix
concrete and aggregate business. Operating profit increased due to expansion
and increases in both production and efficiency.

Market Risk

    The Company's earnings are affected by changes in interest rates due to the
impact those changes have on the Company's variable-rate debt obligations,
which represented approximately 70% of its total debt as of March 31, 1999. If
interest rates average one percent more in fiscal 2000 than they did during
1999, the Company's interest expense would increase by $2.0 million.

Liquidity and Financial Resources

    The Company's cash and equivalents increased $10.4 million from $3.1
million at March 31, 1998 to $13.5 million at March 31, 1999. Net cash provided
by operating activities increased to $176.4 million during fiscal 1999 from
$120.9 million in fiscal 1998. Capital expenditures during fiscal 1999 were
$208.3 million, of which $116.5 million was for additions to the lease fleet.
This compares to $129.4 million of capital expenditures in fiscal 1998, of
which $79.5 million was for additions to the lease fleet. Expenditures for
acquisitions were $82.8 million compared to $60.2 million in the prior year.
Proceeds from the sale of property, plant and equipment and other assets were
$178.7 million in fiscal 1999, composed primarily of the sale of cars from the
lease fleet and a portion of the Company's investment real estate, compared to
$81.4 million in fiscal 1998. The Company repurchased 2.4 million shares of its
common stock for $79.5 million in fiscal 1999. Future operating requirements
are expected to be financed principally with net cash flows from operations.
Internally generated funds and short-term and long-term debt will continue to
be used to finance business acquisitions. Additions to Trinity's assets under
lease are anticipated to be financed through internally generated funds, the
issuance of equipment trust certificates, or similar debt instruments.

Year 2000

    The advent of the year 2000 has become an issue due to dates being
programmed into hardware, software, and embedded chips with only two digits to
identify a year, interpreting 00 to be the year 1900, instead of 2000. This
misinterpretation could cause systems and equipment to produce errors, or fail
to function after December 31, 1999. Some errors may occur even earlier due to
forward processing of orders or purchases.

    Information technology (IT) systems are used throughout the Company to
manage key production and financial processes and embedded chip technology is
used in some of the Company's machinery and equipment.

    Efforts to identify and correct Year 2000 issues began in 1996. The Company
has a Year 2000 Project Management Office that is taking those actions it
believes reasonable so that Year 2000 issues do not materially impact the
Company's operations. In addition, an outside consulting firm has been retained
to advise the Company on general Year 2000 issues, supplier assessment, and
testing of mission critical IT systems.

    The Company's plan to manage compliance of IT systems, non-IT items, and
third-party relationships consists of six phases:


                                       21

<PAGE>   6
    Management's Discussion & Analysis of Financial Condition & Results of
                                  Operations


Identification:

         Inventory of items that may be affected by Year 2000 issues, including
         hardware, software, Trinity products, machinery and equipment with
         embedded technology, and third-party relationships.

Assessment:

         Evaluation of inventoried items to establish risk potential and
         determination of corrective steps to be taken.

Certification:

         Collection of data from third-party suppliers certifying compliance of
         products and services.

Remediation:

         Process of upgrading or replacement of noncompliant systems.

Testing:

         Application and embedded technology testing involving standardized
         methodology.

Contingency Planning:

         Continuity assessment and planning to minimize potential impacts from
         business failures arising from Year 2000 issues.

Mission Critical Y2K Compliance

                                    [GRAPH]

    To date, the Company has spent approximately $3.6 million on compliance
efforts. An additional $3.3 million is expected to be spent by the year 2000.
The Company anticipates that costs to address the Year 2000 issue represent
approximately 13 percent of the total IT budget for fiscal years 1998, 1999,
and 2000.

    While the Company has no way to provide assurance that third-party systems
will be Year 2000 compliant on a timely basis, the Company is surveying and
assessing third parties with whom it has a significant relationship.
Approximately 5,000 suppliers have been surveyed and assessed for Year 2000
compliance. Contingency plans are being developed for suppliers and vendors
believed to be at risk. The Company is also working with key customers on
exchanging Year 2000 status information.

    As a manufacturing company, potential worst-case scenarios facing Trinity
would be: an interruption of utility services that would impact production; an
interruption of transport services by one of the key railroads that would
impact the Company's ability to deliver finished product to its customers,
receive certain materials and affect demand, or the ability of key suppliers to
deliver raw materials or services due to their noncompliance. Contingency plans
are being developed, as deemed appropriate, to deal with the impact of these
matters. However, there is no guarantee that all noncompliant systems of third
parties will be identified and remediated in time, making the number of hours
or days of possible interruption an uncertainty. It is expected that the
occurrence of any one, or all of the above worst-case scenarios, would be of
short-term duration and would not have a material effect on the Company's
long-term results of operations, liquidity, and financial condition. However,
many of these events are outside of the Company's control and there can be no
assurance that an occurrence or event will not happen which could materially
impact operations.

    At this time, the Company believes all significant areas have been
identified, remediation is on schedule, and contingency plans to deal with Year
2000 issues will be in place.

Inflation

    Changes in price levels did not significantly affect the Company's
operations in fiscal 1999, 1998, or 1997.

Forward Looking Statements

    Any statements contained herein that are not historical facts are
forward-looking statements within the meaning of the Private Securities
Litigation Reform Act of 1995, and involve risks and uncertainties. These
forward-looking statements include expectations, beliefs, plans, objectives,
future financial performance, estimates, projections, goals, and forecasts.
Potential factors which could cause the Company's actual results of operations
to differ materially from those in the forward-looking statements include
market conditions and demand for the Company's products, competition,
technologies, steel prices, interest rates and capital costs, taxes, unstable
governments and business conditions in emerging economies, and legal,
regulatory, and environmental issues. Any forward-looking statement speaks only
as of the date on which such statement is made. The Company undertakes no
obligation to update any forward-looking statement to reflect events or
circumstances after the date on which such statement is made.


                                      22

<PAGE>   7

                         Consolidated Income Statement


<TABLE>
<CAPTION>

    Consolidated Income Statement                                                    Year Ended March 31
                                                                           --------------------------------------
    (in millions except per share data)                                       1999          1998          1997
                                                                           ----------    ----------    ----------
<S>                                                                        <C>           <C>           <C>
    Revenues                                                               $  2,926.9    $  2,473.0    $  2,234.3

    Operating costs:
       Cost of revenues                                                       2,472.8       2,054.0       1,877.6
       Selling, engineering, and administrative expenses                        169.2         163.1         142.5
                                                                           ----------    ----------    ----------
                                                                              2,642.0       2,217.1       2,020.1
                                                                           ----------    ----------    ----------
    Operating profit                                                            284.9         255.9         214.2

    Other (income) expense:
       Litigation settlement                                                       --          70.0            --
       Interest income                                                           (4.5)         (1.8)         (0.5)
       Interest expense                                                          20.4          20.9          21.4
       Other, net                                                               (27.4)          0.9          12.0
                                                                           ----------    ----------    ----------
                                                                                (11.5)         90.0          32.9
                                                                           ----------    ----------    ----------

    Income from continuing operations before income taxes                       296.4         165.9         181.3
    Provision (benefit) for income taxes:
       Current                                                                  106.9          53.3          71.2
       Deferred                                                                   4.2           8.9          (3.6)
                                                                           ----------    ----------    ----------
                                                                                111.1          62.2          67.6
                                                                           ----------    ----------    ----------

    Income from continuing operations                                           185.3         103.7         113.7

    Discontinued operations:
       Income (net of income taxes of $10.9)                                       --            --          14 5
       Gain from sale of subsidiary stock in an initial public offering            --            --           9.3
                                                                           ----------    ----------    ----------
                                                                                   --            --          23 8
                                                                           ----------    ----------    ----------
    Net income                                                             $    185.3    $    103.7    $    137.5
                                                                           ==========    ==========    ==========

    Net income per common share:
       Basic:
          Continuing operations                                            $     4.31    $     2.41    $     2.68
          Discontinued operations                                                  --            --          0.56
                                                                           ----------    ----------    ----------
          Net income per share                                             $     4.31    $     2.41    $     3.24
                                                                           ==========    ==========    ==========

       Diluted:
          Continuing operations                                            $     4.25    $     2.36    $     2.66
          Discontinued operations                                                  --            --          0.55
                                                                           ----------    ----------    ----------
          Net income per share                                             $     4.25    $     2.36    $     3.21
                                                                           ==========    ==========    ==========

    Weighted average number of shares outstanding:
          Basic                                                                  43.0          43.1          42.4
          Diluted                                                                43.6          43.9          42.8
</TABLE>

See accompanying notes to consolidated financial statements.

                                       23

<PAGE>   8
                          Consolidated Balance Sheet


<TABLE>
<CAPTION>
    Consolidated Balance Sheet                                                               March 31
                                                                                     ------------------------
    (in millions except per share data)                                                 1999           1998
                                                                                     ----------    ----------
<S>                                                                                  <C>           <C>
    ASSETS
    Cash and equivalents                                                             $     13.5    $      3.1
    Receivables (net of allowance for doubtful accounts
       of $1.9 in 1999 and $1.7 in 1998)                                                  357.4         390.5
    Inventories:
       Raw materials and supplies                                                         279.5         248.5
       Work in process                                                                     42.5          42.5
       Finished goods                                                                      75.1          51.6
                                                                                     ----------    ----------
                                                                                          397.1         342.6

    Property, plant and equipment, at cost                                              1,213.6       1,201.9
    Less accumulated depreciation                                                        (481.3)       (475.0)
                                                                                     ----------    ----------
                                                                                          732.3         726.9

    Other assets                                                                          184.6         110.8
                                                                                     ----------    ----------
                                                                                     $  1,684.9    $  1,573.9
                                                                                     ==========    ==========

    LIABILITIES AND STOCKHOLDERS' EQUITY
    Short-term debt                                                                  $    181.0    $    101.0
    Accounts payable and accrued liabilities                                              366.7         386.6
    Long-term debt                                                                        120.6         149.6
    Deferred income taxes                                                                  34.0          27.5
    Other liabilities                                                                      23.5          21.7
                                                                                     ----------    ----------
                                                                                          725.8         686.4


    Stockholders' equity:
       Common stock - par value $1 per share; authorized - 100.0 shares; shares
          issued and outstanding in 1999 - 43.7; in 1998 - 43.5                            43.7          43.5
       Capital in excess of par value                                                     292.6         287.7
       Retained earnings                                                                  722.9         567.5
       Accumulated other comprehensive income                                             (20.6)        (11.2)
       Treasury stock (2.4 shares), at cost:                                              (79.5)           --
                                                                                     ----------    ----------
                                                                                          959.1         887.5
                                                                                     ----------    ----------
                                                                                     $  1,684.9    $  1,573.9
                                                                                     ==========    ==========
</TABLE>


See accompanying notes to consolidated financial statements.

                                       24

<PAGE>   9
                     Consolidated Statement of Cash Flows


<TABLE>
<CAPTION>
    Consolidated Statement of Cash Flows                                                      Year Ended March 31
                                                                                     --------------------------------------
    (in millions)                                                                       1999          1998          1997
                                                                                     ----------    ----------    ----------
<S>                                                                                  <C>           <C>           <C>
    Operating activities:
       Net income                                                                    $    185.3    $    103.7    $    137.5
       Less income from discontinued operations                                              --            --         (23.8)
                                                                                     ----------    ----------    ----------
       Income from continuing operations                                                  185.3         103.7         113.7
       Adjustments to reconcile income to net cash provided
          (required) by operating activities:
              Depreciation and amortization                                                72.0          73.0          75.3
              Deferred income taxes                                                         4.2           8.9          (3.6)
              Gain on sale of property, plant and equipment and other assets              (24.6)         (4.2)         (4.3)
              Other                                                                         7.2          (1.1)          8.0
              Changes in assets and liabilities, net of effects from
                 acquisitions:
                 (Increase) decrease in receivables                                        45.3        (150.9)         64.7
                 (Increase) decrease in inventories                                       (47.9)         (3.2)         17.9
                 Increase in other assets                                                 (13.9)        (30.6)        (32.0)
                 Increase (decrease) in accounts payable and accrued liabilities          (53.0)        121.1
                                                                                                                       51.5
                 Increase (decrease) in other liabilities                                   1.8           4.2         (12.4)
                                                                                     ----------    ----------    ----------
                   Total adjustments                                                       (8.9)         17.2         165.1
                                                                                     ----------    ----------    ----------
       Net cash provided by operating activities                                          176.4         120.9         278.8

    Investing activities:
       Proceeds from sale of property, plant and equipment and other assets               178.7          81.4          59.2
       Capital expenditures                                                              (208.3)       (129.4)       (173.5)
       Payment for purchase of acquisitions, net of cash acquired                         (82.8)        (60.2)         (5.6)
                                                                                     ----------    ----------    ----------
       Net cash required by investing activities                                         (112.4)       (108.2)       (119.9)

    Financing activities:
       Issuance of common stock                                                             4.8           2.4           4.6
       Stock repurchases                                                                  (79.5)           --            --
       Net borrowings (repayments) of short-term debt                                      80.0          34.5        (152.0)
       Payments to retire long-term debt                                                  (29.5)        (29.4)        (31.6)
       Dividends paid                                                                     (29.4)        (29.3)        (28.7)
                                                                                     ----------    ----------    ----------
       Net cash required by financing activities                                          (53.6)        (21.8)       (207.7)

    Cash flows provided by discontinued operations                                           --            --          46.3
                                                                                     ----------    ----------    ----------
    Net increase (decrease) in cash and equivalents                                        10.4          (9.1)         (2.5)
    Cash and equivalents at beginning of period                                             3.1          12.2          14.7
                                                                                     ----------    ----------    ----------
    Cash and equivalents at end of period                                            $     13.5    $      3.1    $     12.2
                                                                                     ----------    ----------    ----------
</TABLE>


Interest paid in fiscal 1999, 1998, and 1997 was $20.5, $23.1, and $24.5,
respectively.

See accompanying notes to consolidated financial statements.

                                       25

<PAGE>   10
                Consolidated Statement of Stockholders' Equity


<TABLE>
<CAPTION>
    Consolidated Statement of Stockholders' Equity

                                   Common      Common     Capital               Accumulated
                                   Shares       Stock       in                     Other                   Treasury      Total
    (in millions except share   (100,000,000    $1.00    Excess of  Retained   Comprehensive   Treasury      Stock    Stockholders'
     and per share data)         Authorized)  Par Value  Par Value  Earnings       Income       Shares      at Cost      Equity
                                ------------  ---------  ---------  --------   -------------  ----------   ---------  -------------

<S>                             <C>           <C>        <C>         <C>       <C>            <C>          <C>        <C>
    Balance at March 31, 1996     41,596,037  $    41.6  $   239.6    $464.8                                          $       746.0
       Distribution of Halter
          Marine Group, Inc.              --         --         --     (80.2)                                                 (80.2)
       Other                       1,450,328        1.4       40.9        --                                                   42.3

       Net income                         --         --         --     137.5                                                  137.5
       Currency translation
          adjustments                     --         --         --        --   $        (7.2)                                  (7.2)
                                                                                                                      -------------
       Comprehensive income                                                                                                   130.3
       Cash dividends
          ($0.68 per share)               --         --         --     (28.9)                                                 (28.9)
                                ------------  ---------  ---------   -------   -------------  ----------   ---------  -------------
    Balance at March 31, 1997     43,046,365       43.0      280.5     493.2            (7.2)                                 809.5
       Other                         442,911        0.5        7.2        --              --                                    7.7

       Net income                         --         --         --     103.7              --                                  103.7
       Currency translation
          adjustments                     --         --         --        --            (4.0)                                  (4.0)
                                                                                                                      -------------
       Comprehensive income                                                                                                    99.7
       Cash dividends
          ($0.68 per share)               --         --         --     (29.4)             --                                  (29.4)
                                ------------  ---------  ---------   -------   -------------  ----------   ---------  -------------
    BALANCE AT MARCH 31, 1998     43,489,276       43.5      287.7     567.5           (11.2)                                 887.5
       STOCK REPURCHASES                                                                  --  (2,363,932)  $   (79.5)         (79.5)
       OTHER                         216,360        0.2        4.9                        --          --          --            5.1

       NET INCOME                         --         --         --     185.3              --          --                      185.3
       CURRENCY TRANSLATION
          ADJUSTMENTS                     --         --         --        --            (9.4)         --          --           (9.4)
                                                                                                                      -------------
       COMPREHENSIVE INCOME                                                                                                   175.9
       CASH DIVIDENDS
          ($0.69 PER SHARE)               --         --         --     (29.9)             --          --          --          (29.9)
                                ------------  ---------  ---------   -------   -------------  ----------   ---------  -------------
    BALANCE AT MARCH 31, 1999     43,705,636  $    43.7  $   292.6   $ 722.9   $       (20.6) (2,363,932)  $   (79.5) $       959.1
                                ============  =========  =========   =======   =============  ==========   =========  =============
</TABLE>


The Company has authorized and unissued 1,500,000 shares of no par value voting
preferred stock.

See accompanying notes to consolidated financial statements.


                                       26

<PAGE>   11

                  Notes to Consolidated Financial Statements


Summary of Significant Accounting Policies

    The financial statements of Trinity Industries, Inc. and its consolidated
subsidiaries ("Trinity" or the "Company") include the accounts of all
significant majority-owned subsidiaries. All significant intercompany accounts
and transactions have been eliminated.

    For purposes of the Consolidated Statement of Cash Flows, the Company
considers all highly liquid debt instruments purchased with a maturity of three
months or less to be cash equivalents. Financial instruments which potentially
subject the Company to concentrations of credit risk are primarily cash
investments and receivables. The Company places its cash investments in
investment grade, short-term debt instruments, and limits the amount of credit
exposure to any one commercial issuer. Concentrations of credit risk with
respect to receivables are limited due to control procedures to monitor the
credit worthiness of customers, the large number of customers in the Company's
customer base, and their dispersion across different industries and geographic
areas. The Company maintains an allowance for losses based upon the expected
collectibility of all receivables. At March 31, 1999, the Company has an
advance payment and a deposit agreement totaling approximately $50 million for
steel inventory purchases from a supplier in Mexico which has suspended
payments on its debt, received court protection from its creditors, and is
currently negotiating with its lenders to restructure its debt due to
short-term liquidity problems. To date, deliveries of steel to the Company have
been timely and management believes there will be no material adverse effect on
the Company.

    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

    The Company enters into lease contracts with third parties with terms
generally ranging between one and fifteen years, wherein certain equipment
manufactured by Trinity is leased for a specified type of service over the term
of the contract. The Company primarily enters into operating leases.

    Inventories are valued at the lower of cost or market, with cost determined
principally on the specific identification method. Market is replacement cost
or net realizable value.

    Depreciation and amortization are generally computed by the straight-line
method over the estimated useful lives of the assets, generally 2 to 30 years.
The costs of ordinary maintenance and repairs are charged to expense, while
renewals and major replacements are capitalized.

    Diluted net income per common share is based on the weighted average shares
outstanding plus the assumed exercise of dilutive stock options less the number
of treasury shares assumed to be purchased from the proceeds using the average
market price of Trinity's common stock. Basic net income per common share is
based on the weighted average number of common shares outstanding for the
period. The numerator for both basic net income per common share and diluted
net income per common share is net income. The difference between the
denominator in the basic calculation and the denominator in the diluted
calculation is attributable to the effect of stock options.

    In fiscal 1999, the Company adopted Statement of Position (SOP) 98-1,
"Accounting for the Costs of Computer Software Developed or Obtained for
Internal Use," which requires certain direct development costs associated with
internal-use software to be capitalized including external direct costs of
material and services, and payroll costs for employees devoting time to the
software projects. These costs are included in property, plant and equipment
and are depreciated over a period not exceeding three years beginning when the
asset is substantially ready for use. Costs incurred during the preliminary
project stage, as well as maintenance and training costs, are expensed as
incurred.

    In fiscal 1999, Statement of Financial Accounting Standards No. 133,
"Accounting for Derivative Instruments and Hedging Activities," was issued.
Adoption of this Statement is currently proposed to be effective for fiscal
years beginning after June 15, 2000. The Company has determined that this
Statement will not have a material impact on its financial statements.

    The Company initiated a stock repurchase program in the second quarter of
fiscal year 1999. The program authorizes the Company to repurchase up to 10
percent of the Company's 43.5 million shares of common stock. As of March 31,
1999, approximately 2.4 million shares had been repurchased at a total cost of
$79.5 million.

    Certain reclassifications have been made to prior year statements to
conform to the current year presentation.

Segment Information

    As of March 31, 1999, the Company adopted Statement of Financial Accounting
Standards No. 131, "Disclosures about Segments of an Enterprise and Related
Information." The segment information for 1998 and 1997 has been restated from
prior years' presentation in order to conform to current

                                       27

<PAGE>   12

                  Notes to Consolidated Financial Statements


requirements. The Company determined its operating segments based on the types
of products and services it provides.

    Trinity manufactures, sells, and leases a wide variety of products
principally in the following segments or groups: (1) the Railcar Group,
consisting primarily of tank cars, freight cars, and railcar maintenance,
management, or leasing to various industries; (2) the Industrial Group,
consisting primarily of container heads (the ends of pressure and non-pressure
containers) for use internally and by other manufacturers of containers, weld
fittings (tees, elbows, reducers, caps, and flanges) used in pressure piping
systems, and pressure and non-pressure containers for the storage and
transportation of liquefied gases and other liquid and dry products; (3) the
Highway Construction Products Group, consisting primarily of highway guardrail
and safety products and girders, beams, and columns used in the construction of
highway and railway bridges; (4) the Inland Barge Group, consisting of barges
for inland waterway services; and (5) the Concrete, Aggregate, & All Other
group, composed of ready-mix concrete and aggregate, passenger loading bridges
and conveyor systems, heavy equipment components, transportation services, and
the Company's captive insurance subsidiary.

    The financial information for these segments is shown in the tables below.
The Company operates principally in the continental United States, Mexico, and
Brazil. Intersegmental sales are shown at market prices.

    Total revenues from external customers attributed to foreign operations in
fiscal 1999, 1998, and 1997 are $42.6 million, $55.3 million, and $39.7
million, respectively. The Railcar Group includes revenues from one customer
which


<TABLE>
<CAPTION>
    Year Ended March 31, 1999
    (in millions)
                                                      Revenues              Operating
                                           ------------------------------     Profit     Segment  Depreciation &    Capital
                                           Outside  Intersegment   Total      (Loss)      Assets   Amortization   Expenditures
                                           -------- ------------ --------    --------    -------- --------------  ------------

<S>                                        <C>        <C>        <C>         <C>         <C>        <C>            <C>
Railcar Group                              $1,959.7   $    6.9   $1,966.6    $  248.1    $  978.3   $   29.0       $  165.4
Industrial Group                              284.2        1.4      285.6        17.5       140.4        5.5            6.8
Highway Construction Products Group           220.6        1.2      221.8        36.0        93.1        3.3            1.7
Inland Barge Group                            202.9         --      202.9        14.2        73.1        7.1            1.3
Concrete, Aggregate, & All Other              259.5       51.2      310.7        28.7       140.5       22.5           21.1
Eliminations & Corporate Items                   --         --      (60.7)      (59.6)      259.5        4.6           12.0
                                           --------   --------   --------    --------    --------   --------       --------
Consolidated Total                                               $2,926.9    $  284.9    $1,684.9   $   72.0       $  208.3
                                                                 ========    ========    ========   ========       ========
</TABLE>


<TABLE>
<CAPTION>
    Year Ended March 31, 1998
    (in millions)
                                                     Revenues               Operating
                                           ------------------------------     Profit     Segment  Depreciation &    Capital
                                           Outside  Intersegment  Total       (Loss)      Assets   Amortization   Expenditures
                                           -------- ------------ --------    --------    -------- --------------  ------------
<S>                                        <C>        <C>        <C>         <C>         <C>        <C>            <C>
Railcar Group                              $1,303.0   $    9.3   $1,312.3    $  177.2    $  875.9   $   28.1       $   86.2
Industrial Group                              371.5        3.0      374.5        45.0       222.3        8.4            7.7
Highway Construction Products Group           221.9         --      221.9        33.5        91.9        3.6            2.0
Inland Barge Group                            339.9         --      339.9        32.0       100.6        7.3            0.4
Concrete, Aggregate, & All Other              236.7       50.6      287.3        22.5       146.4       20.1           19.4
Eliminations & Corporate Items                   --         --      (62.9)      (54.3)      136.8        5.5           13.7
                                           --------   --------   --------    --------    --------   --------       --------
Consolidated Total                                               $2,473.0    $  255.9    $1,573.9   $   73.0       $  129.4
                                                                 ========    ========    ========   ========       ========
</TABLE>


                                       28

<PAGE>   13
                  Notes to Consolidated Financial Statements


<TABLE>
<CAPTION>
    Year Ended March 31, 1997
    (in millions)
                                                     Revenues               Operating
                                           ------------------------------     Profit     Segment  Depreciation &    Capital
                                           Outside  Intersegment  Total       (Loss)      Assets   Amortization   Expenditures
                                           -------- ------------ --------    --------    -------- --------------  ------------
<S>                                        <C>        <C>        <C>         <C>         <C>        <C>            <C>
Railcar Group                              $1,247.3   $   12.1   $1,259.4    $  155.4    $  708.7   $   31.9       $  134.9
Industrial Group                              327.6        3.0      330.6        42.5       164.9        7.8            6.4
Highway Construction Products Group           192.7         --      192.7        29.7        75.2        4.5            1.1
Inland Barge Group                            254.2         --      254.2        19.7       192.1        5.2           13.8
Concrete, Aggregate, & All Other              204.0       34.4      238.4        12.7       147.6       21.4           16.0
Eliminations & Corporate Items                  8.5         --      (41.0)      (45.8)       67.9        4.5            1.3
                                           --------   --------   --------    --------    --------   --------       --------
    Consolidated Total                                           $2,234.3    $  214.2    $1,356.4   $   75.3       $  173.5
                                                                 ========    ========    ========   ========       ========
</TABLE>

accounted for 9.9 percent, 10.1 percent, and 10.8 percent of consolidated
revenues in fiscal 1999, 1998, and 1997, respectively. Long-lived assets
located outside the United States in fiscal 1999, 1998, and 1997 are $134.7
million, $120.7 million, and $79.7 million, respectively.

    Corporate assets are composed of cash and equivalents, notes receivable,
land held for investment, certain property, plant and equipment, and other
assets. Capital expenditures do not include business acquisitions.

    Segment operating profit excludes administrative overhead of the corporate
office and certain shared services of the businesses which are included in
Eliminations & Corporate Items.

Acquisitions and Divestiture

ACQUISITIONS

    The Company made certain acquisitions during fiscal 1999, 1998, and 1997
accounted for by the purchase method. The acquired operations have been
included in the consolidated financial statements from the effective dates of
the acquisitions.

    In fiscal 1999, the businesses acquired for cash included: (i) 100 percent
of the capital stock of Excell Materials, Inc., a ready-mix concrete company;
and (ii) 100 percent of the capital stock of MCT Holdings, Inc., the parent of
McConway & Torley Corporation which manufactures casting products for the
railcar industry. The aggregate purchase price for these acquisitions was
approximately $104.4 million. Goodwill of approximately $65 million recorded in
the MCT acquisition is included in other assets and is being amortized over 30
years. Contributions from these acquisitions to revenues and operating profit
during fiscal 1999 were not material.

    In fiscal 1998, the businesses acquired included: (i) certain assets of the
Industrial Products Division of Ladish Co., Inc. utilized in the manufacture of
metal components for cash; (ii) certain assets of Buffalo Specialty Products,
Inc. utilized in the manufacture of highway construction products for cash;
(iii) 100 percent of the capital stock of Differential Holdings, Inc., a
railcar manufacturer, in exchange for 94,067 shares of Trinity common stock;
(iv) certain assets of Industrial Companies, Inc. used in the ready-mix
concrete business for cash; and (v) certain assets of the Springfield, Missouri
facility of Busch Mechanical Services, Inc. utilized in the railcar repair
business for cash. The aggregate purchase price for these acquisitions was
approximately $70.8 million. Contributions from these acquisitions to revenues
and operating profit during fiscal 1998 were not material.

    In fiscal 1997, the businesses acquired for continuing operations included:
(i) 100 percent of the capital stock of Transcisco Industries, Inc., a
diversified railcar services company engaged in railcar maintenance and repair,
specialty railcar leasing and management services, and Russian rail
transportation services through its 20 percent ownership of SFAT, a Russian
private rail transportation services company, in exchange for 1,162,612 shares
of Trinity common stock; and (ii) certain assets of John Guidry Ready Mix
Company, Inc., The Cement and Supply Company, and Pitcock Bros. Ready Mix
Concrete, Inc. for cash. The aggregate purchase price of these acquisitions was
approximately $68.6 million. Contributions from these acquisitions to revenues
and operating profit during fiscal 1997 were not material.


                                      29


<PAGE>   14
                  Notes to Consolidated Financial Statements


DIVESTITURE

    Halter Marine Group, Inc. ("Halter"), previously a wholly-owned subsidiary
of the Company, was divested in 1997 through (i) the sale of 19.0 percent of
Halter in an initial public offering resulting in a gain of $9.3 million, and
(ii) a tax-free distribution of the remaining ownership to the Company's
stockholders. Halter's revenues and net income (inclusive of minority interest)
for fiscal 1997 were $406.8 million and $16.1 million, respectively.

Stock Plans

    The Company's 1998 Stock Option and Incentive Plan provides for awarding
2,000,000 shares of common stock plus shares covered by forfeited, expired, and
canceled options granted under prior plans for a total of 2,211,316 shares
available for issuance at March 31, 1999, with a maximum of 600,000 shares
being available for issuance as restricted stock or in satisfaction of
performance or other awards. The plan provides for the granting of:
nonqualified and incentive stock options, having maximum 10 year terms, to
purchase common stock at its market value on the award date; stock appreciation
rights based on common stock fair market values with settlement in common stock
or cash; restricted stock; and performance awards with settlement in common
stock or cash on achievement of specific business objectives. Under previous
plans, nonqualified and incentive stock options and restricted shares were
granted at their fair market values. One grant provided for granting reload
options for the remaining term of the original grant at the common stock market
value on the date shares already owned by the optionee are surrendered in
payment of the option exercise price. Options become exercisable in various
percentages over periods ranging from six months to eight years.

<TABLE>
<CAPTION>
                                                                        Year Ended March 31
                                           ------------------------------------------------------------------------------
                                                   1999                        1998                        1997
                                           ------------------------   ------------------------   ------------------------
                                                          Weighted                   Weighted                   Weighted
                                                          Average                    Average                    Average
                                                          Exercise                   Exercise                   Exercise
                                             Shares        Price        Shares        Price        Shares        Price
                                           ----------    ----------   ----------    ----------   ----------    ----------
<S>                                         <C>          <C>           <C>          <C>           <C>          <C>
    Outstanding beginning of year           1,982,495    $    26.01    1,962,722    $    26.72    1,726,461    $    24.40
    Halter property distribution                   --            --      499,369            --           --            --
    Granted                                   414,663         39.76      389,218         46.44      480,456         32.26
    Exercised                                (314,453)        18.73     (554,357)        20.78     (237,570)        21.16
    Canceled                                  (22,722)        33.26     (314,457)        23.63       (6,625)        24.35
                                           ----------    ----------   ----------    ----------   ----------    ----------
    Outstanding end of year                 2,059,983         29.81    1,982,495         26.01    1,962,722         26.72
                                           ==========    ==========   ==========    ==========   ==========    ==========
    Exercisable                               961,903         23.92      967,973         19.34      948,689         23.33
                                           ==========    ==========   ==========    ==========   ==========    ==========
</TABLE>


                                       30
<PAGE>   15

                  Notes to Consolidated Financial Statements


<TABLE>
<CAPTION>
                                                                                 March 31, 1999
                                                       ---------------------------------------------------------------
                                                               Outstanding Options
                                                       ------------------------------------
                                                                         Weighted Average          Exercisable Options
                                                                    -----------------------       --------------------
                                                                     Remaining                                Weighted
                                                                    Contractual    Exercise                    Average
    Exercise Price Range                                Shares      Life (Years)     Price         Shares       Price
                                                       ---------    ------------   --------       --------    --------
<S>                                                    <C>          <C>            <C>            <C>         <C>
    $ 13.22 - $ 15.94                                    301,429         2.1       $  14.23        301,429    $  14.23
      21.25 -   31.38                                  1,030,440         5.8          24.27        547,132       24.18
      33.00 -   49.00                                    475,148         9.3          39.34         44,176       41.18
      49.81 -   53.81                                    252,966         8.6          53.01         69,166       53.04
                                                       ---------     -------       --------       --------    --------
    $ 13.22 - $ 53.81                                  2,059,983         6.4          29.81        961,903       23.92
                                                       =========     =======       ========       ========    ========
</TABLE>

    In connection with the Halter property distribution, outstanding stock
options were adjusted to preserve their economic value.

    The Company has elected to apply the accounting provisions of Accounting
Principles Board Opinion No. 25, "Accounting for Stock Issued to Employees,"
and its Interpretations and, accordingly, no compensation cost has been
recorded for stock options. The effect of computing compensation cost in
accordance with Statement of Financial Accounting Standards No. 123,
"Accounting for Stock-Based Compensation," and the weighted average fair value
of options granted during 1999, 1998, and 1997 using the Black-Scholes option
pricing model are shown in the accompanying table.

<TABLE>
<CAPTION>
                                         1999          1998         1997
                                      ----------    ----------    ----------
<S>                                   <C>           <C>           <C>
    Estimated fair value per
       share of options granted       $    15.49    $    17.72    $     9.26
    Pro forma:
       Net income (millions)          $    183.1    $    102.7    $    136.8
       Per diluted share              $     4.20    $     2.34    $     3.20
    Black-Scholes assumptions:
       Expected option life
          (years)                            6.7           6.5           6.8
       Risk-free interest rate              6.00%         7.05%         6.45%
       Dividend yield                       1.82%         1.56%         2.11%
       Common stock volatility             0.393         0.283         0.209
</TABLE>

                           RESTRICTED STOCK
<TABLE>
<CAPTION>
                                      1999         1998         1997
                                   ----------   ----------   ----------
<S>                                <C>          <C>          <C>
    Shares awarded                     42,000       24,000       20,000
    Grant date fair value
       per share                   $    39.04   $    53.00   $    25.13
    Outstanding at March 31            81,500       40,500       20,000
</TABLE>



                                       31

<PAGE>   16
                  Notes to Consolidated Financial Statements


Debt

<TABLE>
<CAPTION>
    LONG-TERM DEBT                                                        March 31
                                                                  -----------------------
    (in millions)                                                    1999         1998
                                                                  ----------   ----------
<S>                                                               <C>          <C>
3.0-9.25 percent industrial development revenue bonds
   payable in varying amounts through 2005                        $      2.0   $      1.9
5.56-6.0 percent promissory notes generally payable
   annually through 2008                                                30.0         31.7
6.96-10.25 percent equipment trust certificates to
   institutional investors generally payable in semi-annual
   installments of varying amounts through 2003                         81.4        107.5
11.3 percent notes payable monthly through 2003                          7.2          8.5
                                                                  ----------   ----------
                                                                  $    120.6   $    149.6
                                                                  ==========   ==========
</TABLE>

    The fair value of nontraded, fixed-rate outstanding debt, estimated using
discounted cash flow analysis, approximates its carrying value. The Company is
required to maintain certain financial ratios, as defined. Principal payments
due during the next five years are: 2000 - $26.7; 2001 - $53.0; 2002 - $25.9;
2003 - $11.5; and 2004 - $2.0.

    The trustees of the equipment trusts have been assigned title to railcars
with a cost of $190.6 million at March 31, 1999 for the life of the respective
equipment trusts. Leases relating to such railcars financed by equipment trust
certificates have been assigned as collateral.

    Future minimum rental revenues on leases in each fiscal year are: 2000 -
$50.8; 2001 - $40.6; 2002 - $35.4; 2003 - $28.8; 2004 - $24.9; and $114.1
thereafter.

SHORT-TERM DEBT

    Short-term debt primarily consists of money market borrowings, generally
due within 30 days, with interest rates ranging from 5.21% to 5.76% in 1999 and
5.86% to 6.43% in 1998.

<TABLE>
<CAPTION>
    Property, Plant
    and Equipment                            March 31
                                      -----------------------
    (in millions)                        1999         1998
                                      ----------   ----------
<S>                                   <C>          <C>
    Land                              $     38.6   $     37.6
    Buildings and improvements             226.8        224.7
    Machinery                              487.5        497.7
    Equipment on lease
    (predominantly long-term)              428.4        416.8
    Construction in progress                32.3         25.1
                                      ----------   ----------

                                      $  1,213.6   $  1,201.9
                                      ----------   ----------
</TABLE>


                                       32

<PAGE>   17

                  Notes to Consolidated Financial Statements


Income Taxes
(in millions except percent data)

    The provision for federal income taxes is determined on a consolidated
return basis. The components of the provision (benefit) for income taxes from
continuing operations are:

<TABLE>
<CAPTION>
                             Year Ended March 31
                       ------------------------------
                         1999       1998       1997
                       --------   --------   --------
<S>                    <C>        <C>        <C>
    Current:
       Federal         $   96.2   $   48.0   $   63.2
       State               10.7        5.3        8.0
                       --------   --------   --------
                          106.9       53.3       71.2

    Deferred                4.2        8.9       (3.6)
                       --------   --------   --------

    Total              $  111.1   $   62.2   $   67.6
                       ========   ========   ========
</TABLE>

    Deferred income taxes are provided for temporary differences between
financial and taxable income. The components of deferred tax liabilities and
assets are:

<TABLE>
<CAPTION>
                                                     March 31
                                             ------------------------
                                                1999          1998
                                             ----------    ----------
<S>                                          <C>           <C>
    Deferred tax liability -
       depreciation                          $     66.5    $     73.4

    Deferred tax assets:
       Pensions and other benefits                 33.1          34.2
       Accounts receivable, inventory,
         and other asset valuation
         accounts                                   8.6           8.5
       Other                                       (9.2)          3.2
                                             ----------    ----------
         Total deferred tax assets                 32.5          45.9
                                             ----------    ----------
       Net deferred tax liability            $     34.0    $     27.5
                                             ==========    ==========
</TABLE>

    The provision for income taxes from continuing operations results in
effective tax rates different than the statutory rates. The reconciliation
between the effective and statutory rates follows:

<TABLE>
<CAPTION>
                                          Year Ended March 31
                                 --------------------------------------
                                    1999          1998          1997
                                 ----------    ----------    ----------
<S>                              <C>           <C>           <C>
    Statutory rate                     35.0%         35.0%         35.0%
    State taxes                         2.4           2.1           2.3
    Other                               0.1           0.4            --
                                 ----------    ----------    ----------
    Effective tax rate                 37.5%         37.5%         37.3%
                                 ==========    ==========    ==========
</TABLE>

    In fiscal 1999, 1998, and 1997 income taxes of $111.6, $33.6, and $85.9,
respectively, were paid net of refunds received and, for 1997, include amounts
associated with Halter.


                                       33

<PAGE>   18

                  Notes to Consolidated Financial Statements


Employee Retirement Plans
(in millions except percent data)

    The Company sponsors defined benefit pension and defined contribution
profit sharing plans which provide income and death benefits for eligible
employees.


<TABLE>
<CAPTION>
                                                            Year Ended March 31
                                                  ----------------------------------------
                                                     1999           1998          1997
                                                  ----------     ----------     ----------
<S>                                               <C>            <C>           <C>
    Actuarial Assumptions
    Obligation discount rate                            7.25%          7.25%          7.75%
    Compensation increase rate                          4.75%          4.75%          4.75%
    Long-term rate of return on plan assets                9%             9%             9%

    Expense Components
    Service cost                                  $     11.4     $     12.5     $     10.5
    Interest                                            11.2           10.5            9.7
    Expected return on assets                          (13.1)         (10.2)          (8.9)
    Amortization and deferral                           (0.1)            --           (0.2)
    Profit sharing                                       5.3            4.5            4.6
                                                  ----------     ----------     ----------
    Net expense                                   $     14.7     $     17.3     $     15.7
                                                  ==========     ==========     ==========

    Benefit Obligations
    Beginning of year                             $    156.1     $    127.5
    Service cost                                        11.4           12.5
    Interest                                            11.2           10.5
    Benefits paid                                       (6.1)          (6.9)
    Actuarial (gain) loss                               (3.5)          12.5
    Sale of Beaird Industries, Inc.                     (5.9)            --
                                                  ----------     ----------
    End of year                                   $    163.2     $    156.1
                                                  ==========     ==========
    Under funded plans                            $    147.9     $     20.4
    Over funded plans                                   15.3          135.7
                                                  ==========     ==========
    Plans' Assets
    Beginning of year                             $    153.4     $    114.3
    Actual return on assets                             12.3           33.3
    Employer contributions                               5.1           12.7
    Benefits paid                                       (6.1)          (6.9)
    Sale of Beaird Industries, Inc.                     (4.7)            --
                                                  ----------     ----------
    End of year                                   $    160.0     $    153.4
                                                  ==========     ==========
    Under funded plans                            $    140.4     $     13.2
    Over funded plans                                   19.6          140.2
                                                  ==========     ==========
    Consolidated Balance Sheet Components
    Funded status                                 $      3.2     $      2.7
    Unamortized transition obligation                    1.6            1.9
    Unrecognized prior service cost                     (1.1)          (1.4)
    Unrecognized loss                                   (3.4)          (5.9)
                                                  ----------     ----------
    Net obligation (asset)                        $      0.3     $     (2.7)
                                                  ==========     ==========
    Accrued                                       $      5.6     $      5.7
    Prepaid                                              5.3            8.4
                                                  ----------     ----------
    Net accrued (prepaid)                         $      0.3     $     (2.7)
                                                  ==========     ==========
</TABLE>


                                       34

<PAGE>   19
  Notes to Consolidated Financial Statements / Report of Independent Auditors


Contingencies

    In September 1997, the Company settled a 13 year-old lawsuit brought
against a former subsidiary of the Company by Morse/Diesel, Inc. The settlement
resulted in an after-tax charge of $43.8 million being recorded in fiscal year
1998. The Company has not participated in the business associated with this
matter since 1989. In April 1998, the Company settled a five year-old patent
infringement lawsuit brought by Johnstown America Corp.
for approximately $10.5 million, net of tax.

    The Company is involved in various other claims and lawsuits incidental to
its business. In the opinion of management, these claims and suits in the
aggregate will not have a material adverse effect on the Company's consolidated
financial statements.

Stockholder's Rights Plan

    The Company has adopted a Stockholder's Rights Plan to replace its existing
plan which expired April 27, 1999. On March 11, 1999, the Board of Directors of
the Company declared a dividend distribution of one right for each outstanding
share of the Company's common stock, $1.00 par value, to stockholders of record
at the close of business on April 27, 1999. Each right entitles the registered
holder to purchase from the Company one one-hundredth (1/100) of a share of
Series A Preferred Stock at a purchase price of $200.00 per one one-hundredth
(1/100) of a share, subject to adjustment. The rights are not exercisable or
detachable from the common stock until 10 business days after a person acquires
beneficial ownership of 12 percent or more of the Company's common stock, or if
a person or group commences a tender or exchange offer upon consummation of
which that person or group would beneficially own 12 percent or more of the
common stock. The Company will generally be entitled to redeem the rights at
$0.01 per right at any time until the first public announcement that a 12
percent position has been acquired. If any person becomes a beneficial owner of
12 percent or more of the Company's common stock, each right not owned by that
person or related parties enables its holder to purchase, at the right's
purchase price, shares of the Company's common stock having a calculated value
of twice the purchase price of the right.



Report of Independent Auditors

The Board of Directors and Stockholders
Trinity Industries, Inc.

    We have audited the accompanying consolidated balance sheets of Trinity
Industries, Inc. as of March 31, 1999 and 1998, and the related consolidated
statements of income, cash flows and stockholders' equity for each of the three
years in the period ended March 31, 1999. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

    We conducted our audits in accordance with generally accepted auditing
standards. These standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.

    In our opinion, the financial statements referred to above present fairly,
in all material respects, the consolidated financial position of Trinity
Industries, Inc. at March 31, 1999 and 1998, and the consolidated results of
its operations and its cash flows for each of the three years in the period
ended March 31, 1999, in conformity with generally accepted accounting
principles.


                                                              ERNST & YOUNG LLP

Dallas, Texas
June 2, 1999

                                       35

<PAGE>   20

               Supplemental Information / Stockholder Information


<TABLE>
<CAPTION>
    Selected Quarterly Financial Data (unaudited)
    (in millions except per share data)           First       Second         Third       Fourth
                                                 Quarter      Quarter       Quarter      Quarter        Year
                                                ----------   ----------    ----------   ----------   ----------
<S>                                             <C>          <C>           <C>          <C>          <C>
    YEAR ENDED MARCH 31, 1999:
       REVENUES                                 $    711.5        717.4         722.9        775.1      2,926.9
       OPERATING PROFIT                         $     74.1         74.7          69.7         66.4        284.9
       NET INCOME                               $     57.8         44.8          41.8         40.9        185.3
       NET INCOME PER COMMON SHARE:
          BASIC                                 $     1.33         1.03          0.97         0.97         4.31

          DILUTED                               $     1.31         1.02          0.96         0.96         4.25
    Year ended March 31, 1998:
       Revenues                                 $    560.1        560.3         642.4        710.2      2,473.0
       Operating profit                         $     58.3         63.2          68.7         65.7        255.9
       Net income (loss)(1)                     $     33.2         (7.3)         38.8         39.0        103.7
       Net income (loss) per common share:
          Basic                                 $     0.77        (0.17)         0.90         0.90         2.41

          Diluted                               $     0.76        (0.17)         0.88         0.89         2.36
</TABLE>

(1)      Loss in second quarter is due to one-time after-tax charge of $43.8,
         or $1.00 per diluted share, for litigation settlement.


<TABLE>
<CAPTION>
    Common Stock Closing Price Range
                                                   1999         1998          1997         1996         1995
                                                ----------   ----------    ----------   ----------   ----------
<S>                                             <C>          <C>           <C>          <C>          <C>
First Quarter                                   $  54 9/16-      34 3/4-           36-      40 1/4-      39 3/4-
                                                $ 39 15/16       24 1/2        33 1/8           32       33 7/8

Second Quarter                                  $  44 1/16-      48 1/4-       33 7/8-      36 1/8-      35 1/4-
                                                $   28 3/8       31 1/4        31 1/8       30 7/8           31

Third Quarter                                   $   40 5/8-          54-       37 1/2-      32 1/2-      35 3/8-
                                                $ 29 15/16           39        32 1/2       28 1/4       30 1/2

Fourth Quarter                                  $  39 7/16-          55-       36 7/8-      35 3/4-      37 3/8-
                                                $   28 5/8      43 9/16        30 3/8       31 1/8       31 3/4
</TABLE>

Stockholder Information

EXECUTIVE OFFICES
2525 Stemmons Freeway
Dallas, Texas 75207-2401
P.O. Box 568887
Dallas, Texas 75356-8887
Tel: (214) 631-4420

AUDITORS
Ernst & Young LLP

TRANSFER AGENT AND REGISTRAR
The Bank of New York
New York, New York

ANNUAL MEETING
The Annual Meeting of
Stockholders will be held on
July 21, 1999 at 9:30 a.m. at the
offices of the Company, 2525
Stemmons Freeway, Dallas, Texas
75207-2401

FORM 10-K
A copy of the Company's 10-K,
as filed with the Securities and
Exchange Commission, shall be
furnished without charge upon
written request to Michael E.
Conley, Director of Investor
Relations, Trinity Industries, Inc.,
P.O. Box 568887,
Dallas, Texas
75356-8887


                                       36
<PAGE>   21

<TABLE>
<CAPTION>
    Board of Directors                             Executive Officers                         Operating Executives
    ------------------                             ------------------                         --------------------
<S>                                           <C>                                        <C>
David W. Biegler                              Timothy R. Wallace                         Don A. Graham
President and Chief Operating Officer         Chairman                                   Group President
Texas Utilities Company                       President and Chief Executive Officer      Highway Safety/Fittings and Flange

Barry J. Galt                                 John L. Adams                              John R. Nussrallah
Retired Chairman and                          Executive Vice President                   Group President
Chief Executive Officer                                                                  Railcar
Ocean Energy, Inc.                            Mark W. Stiles
                                              Senior Vice President                      Douglas H. Schneider
Clifford J. Grum                                                                         Group President
Chairman and Chief Executive Officer          Jack L. Cunningham, Jr.                    Inland Barge/International
Temple Inland, Inc.                           Vice President
                                                                                         Mark W. Stiles
Dean P. Guerin                                Michael G. Fortado                         Group President
Investments                                   Vice President                             Concrete and Aggregate/
                                              Secretary/General Counsel                  Shared Services
Jess T. Hay
Chairman                                      Jim S. Ivy                                 Manuel Castro, Sr.
HCB Enterprises                               Vice President and                         Group President
Chairman                                      Chief Financial Officer                    Trinity Industries de Mexico/
Texas Foundation for Higher Education                                                    World Wide LPG
                                              John M. Lee
Edmund M. Hoffman                             Vice President                             Rodney A. Boyd
Investments                                                                              President
                                              Michael J. Lintner                         Rollform Division
Diana Natalicio                               Vice President
President                                                                                Antonio Carrillo
The University of Texas at El Paso            R.A. Martin                                Executive Vice President
                                              Vice President                             Trinity Industries de Mexico
Timothy R. Wallace
Chairman                                      Joseph F. Piriano                          George Creighton
President and Chief Executive Officer         Vice President                             President
                                                                                         Trinity Rail Services
W. Ray Wallace                                Linda S. Sickels
Retired Chairman and                          Vice President                             Keith Culhane
Chief Executive Officer                                                                  President
Trinity Industries, Inc.                      Neil O. Shoop                              U.S. LPG
                                              Treasurer
                                                                                         Harry W. Hinkle
                                              John E. Rutzler III                        President
                                              Controller                                 Specialty Products Division

                                                                                         Jeffrey J. Marsh
                                                                                         President
                                                                                         Railcar-Tank Car Division

                                                                                         William A. McWhirter, II
                                                                                         President
                                                                                         Concrete and Aggregate

                                                                                         Patrick A. Turner
                                                                                         President
                                                                                         Trinity Industries Transportation, Inc.

                                                                                         Patrick S. Wallace
                                                                                         Executive Vice President
                                                                                         Railcar-Freight Car Division
</TABLE>

Trinity Industries wishes to recognize two of our key employees who retired
during the past year.

RALPH A. BANKS, JR., SENIOR VICE PRESIDENT, served Trinity for 55 years,
earning the nickname "Mr. Manufacturing" due to his expertise in plant
operations.

RICHARD G. BROWN, SENIOR VICE PRESIDENT, was instrumental in bringing Trinity
Industries to its current position of leadership in the railcar industry. He
served the Company for 20 years.

We salute both of these exceptional individuals for the valuable contributions
and many years of dedicated service.

<PAGE>   1

EXHIBIT 21


                            Trinity Industries, Inc.
                    Listing of Subsidiaries of the Registrant


The Registrant has no parent.

At March 31, 1999, the operating subsidiaries of the Registrant were:

<TABLE>
<CAPTION>

                                                                                               Percentage of
                                                                                Organized     voting securities
                                                                                 under the      owned by the
                    Name of subsidiary                                            laws of         Registrant
- ---------------------------------------------------------------------------     -----------   -----------------

<S>                                                                             <C>            <C>
Helmsdale, Limited                                                               Isle of Man        100%

International Industrial Indemnity Co.                                           Vermont            100%

Standard Forged Products, Inc.                                                   Delaware           100%

Syntechnics, Inc                                                                 Delaware           100%

Syro, Inc                                                                        Ohio               100%

Transit Mix Concrete & Materials
 Company                                                                         Delaware           100%

Transit Mix Concrete & Materials
 Company of Louisiana                                                            Louisiana          100%

Trinity DIFCO, Inc                                                               Delaware           100%

Trinity Casteel, Inc.                                                            Delaware           100%

Trinity Equipment Co., Inc                                                       Delaware           100%

Trinity Financial Services, Inc.                                                 Delaware           100%

Trinity Fitting & Flange Group, Inc.                                             Delaware           100%

Trinity Industries Buffalo, Inc.                                                 Delaware           100%

Trinity Industries de Mexico SA de CV                                            Mexico             100%

Trinity Industries do Brasil, Ltda.                                              Brazil             100%

Trinity Industries Leasing Company                                               Delaware           100%

Trinity Industries Rail do Brasil, Ltda.                                         Brazil             100%

Trinity Industries Real Properties, Inc.                                         Delaware           100%

Trinity Industries Transportation, Inc.                                          Texas              100%

Trinity Marine Caruthersville, Inc.                                              Delaware           100%

Trinity Marine Nashville, Inc.                                                   Delaware           100%

Trinity Marine Port Allen, Inc.                                                  Delaware           100%

Trinity Marine Products, Inc.                                                    Delaware           100%

Trinity Materials, Inc.                                                          Delaware           100%

Trinity Mobile Railcar Repair, Inc.                                              Delaware           100%

Trinity Rail, Inc.                                                               Delaware           100%

Trinity Rail Management, Inc.                                                    Delaware           100%

Transcisco Trading Company                                                       Delaware           100%

Trinity Rail Services, Inc.                                                      California         100%

MCT Holdings, Inc.                                                               Delaware           100%

McConway and Torley Corporation                                                  Pennsylvania       100%

McConway and Torley Anniston, Inc.                                               Delaware           100%

Excell Materials, Inc.                                                           Delaware           100%
</TABLE>


<PAGE>   1


                                                                    EXHIBIT (23)


                         Consent of Independent Auditors


         We consent to the incorporation by reference in this Annual Report
(Form 10-K) of Trinity Industries, Inc. of our report dated June 2, 1999,
included in the 1999 Annual Report to Stockholders of Trinity Industries, Inc.

         Our audits also included the financial statement schedule of Trinity
Industries, Inc. listed in Item 14(a). This schedule is the responsibility of
the Company's management. Our responsibility is to express an opinion based on
our audits. In our opinion, the financial statement schedule referred to above,
when considered in relation to the basic financial statements taken as a whole,
presents fairly in all material respects the information set forth therein.

         We also consent to the incorporation by reference in Post-Effective
Amendment No. 3 to the Registration Statement (Form S-8, No. 2-64813),
Post-Effective Amendment No. 1 to the Registration Statement (Form S-8, No.
33-10937), Post-Effective Amendment No. 1 to the Registration Statement (Form
S-3, No. 33-12526), Amendment No. 1 to the Registration Statement (Form S-3, No.
33-57338), Registration Statement (Form S-8, No. 33-35514), Registration
Statement (Form S-8, No. 33-73026), Post-Effective Amendment No. 1 to the
Registration Statement (Form S-4, No. 33-51709), Post-Effective Amendment No. 1
to the Registration Statement (Form S-4, No. 333-08321), Registration Statement
(Form S-8, No. 333-77735) of Trinity Industries, Inc. and in the related
Prospectuses of our reports dated June 2, 1999 and June 24, 1999 with respect to
the consolidated financial statements and schedule of Trinity Industries, Inc.
included or incorporated by reference in this Annual Report (Form 10-K) for the
year ended March 31, 1999.





                                                         ERNST & YOUNG LLP



Dallas, Texas
June 24, 1999




<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                          13,500
<SECURITIES>                                         0
<RECEIVABLES>                                  357,400
<ALLOWANCES>                                         0
<INVENTORY>                                    397,100
<CURRENT-ASSETS>                                     0
<PP&E>                                       1,213,600
<DEPRECIATION>                               (481,300)
<TOTAL-ASSETS>                               1,684,900
<CURRENT-LIABILITIES>                                0
<BONDS>                                              0
                                0
                                          0
<COMMON>                                        43,700
<OTHER-SE>                                     915,400
<TOTAL-LIABILITY-AND-EQUITY>                 1,684,900
<SALES>                                              0
<TOTAL-REVENUES>                             2,926,900
<CGS>                                                0
<TOTAL-COSTS>                                2,472,800
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              20,400
<INCOME-PRETAX>                                296,400
<INCOME-TAX>                                   111,100
<INCOME-CONTINUING>                            185,300
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   185,300
<EPS-BASIC>                                       4.31
<EPS-DILUTED>                                     4.25


</TABLE>

<PAGE>   1
================================================================================



                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                      ------------------------------------

                                    FORM 11-K
            ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
                              EXCHANGE ACT OF 1934
                    For the fiscal year ended March 31, 1999
                          Commission File Number 1-6903

                      ------------------------------------



          PROFIT SHARING PLAN FOR EMPLOYEES OF TRINITY INDUSTRIES, INC.
                             AND CERTAIN AFFILIATES
                            (Full Title of the Plan)




                            TRINITY INDUSTRIES, INC.
          (Name of issuer of the securities held pursuant to the plan)


                Delaware                                 75-0225040
        (State of Incorporation)            (I.R.S. Employer Identification No.)


  2525 Stemmons Freeway Dallas, Texas                     75207-2401
(Address of principal executive offices)                  (Zip Code)


Issuer's telephone number, including area code (214) 631-4420

================================================================================



<PAGE>   2



                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                            Financial Statements and
                             Supplemental Schedules






                                    CONTENTS

Report of Ernst & Young LLP, Independent Auditors.......................    1

Financial Statements

Statements of Financial Condition as of March 31, 1999 and 1998.........    2
Statements of Income and Changes in Plan Equity for the years
     ended March 31, 1999, 1998 and 1997................................    4
Notes to Financial Statements...........................................    7


Exhibits and Supplemental Schedules


Line 27a - Schedule of Assets Held for Investment Purposes..............   21
Line 27d - Schedule of Reportable Transactions..........................   22
Consent of Ernst & Young LLP, Independent Auditors......................   24



<PAGE>   3



                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the trustees have duly caused this Annual Report to be signed by the undersigned
thereunto duly authorized.

Profit Sharing Plan for Employees of Trinity Industries, Inc. and Certain
Affiliates


/S/  John M. Lee
- --------------------------
     John M. Lee
     Vice President


June 28, 1999




<PAGE>   4






                Report of Ernst & Young LLP, Independent Auditors

Board of Directors
Trinity Industries, Inc.

We have audited the accompanying statements of financial condition of the Profit
Sharing Plan for Employees of Trinity Industries, Inc. and Certain Affiliates as
of March 31, 1999 and 1998, and the related statements of income and changes in
plan equity for each of the three years in the period ended March 31, 1999.
These financial statements are the responsibility of the Plan's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial condition of the Plan at March 31, 1999 and
1998, and the income and changes in Plan equity for each of the three years in
the period ended March 31, 1999, in conformity with generally accepted
accounting principles.

Our audits were performed for the purpose of forming an opinion on the financial
statements taken as a whole. The accompanying supplemental schedules of assets
held for investment purposes as of March 31, 1999, and reportable transactions
for the year then ended, are presented for purpose of additional analysis and
are not a required part of the financial statements but are supplementary
information required by the Department of Labor's Rules and Regulations for
Reporting and Disclosure under the Employee Retirement Income Security Act of
1974. These supplemental schedules are the responsibility of the Plan's
management. The Fund Information in the statements of financial condition and
the statements of income and changes in plan equity is presented for purposes of
additional analysis rather than to present the financial condition and income
and changes in plan equity of each fund. The supplemental schedules and Fund
Information have been subjected to the auditing procedures applied in our audits
of the financial statements and, in our opinion, are fairly stated in all
material respects in relation to the financial statements taken as a whole.


                                                   ERNST & YOUNG LLP
Dallas, Texas
June 18, 1999


<PAGE>   5


                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates


             Statement of Financial Condition, with Fund Information


                                 March 31, 1999


<TABLE>
<CAPTION>
                                                                   CHASE
                                                                   VISTA       CHASE             CHASE
                                                                   PRIME       CORE              VISTA         CHASE
                                     STOCK         PUTNAM          MONEY       EQUITY             U.S.         VISTA
                                    ACCOUNT        VOYAGER         MARKET       FUND            TREASURY       BALANCED
                                  ------------   ------------   ------------   ------------   ------------   ------------
<S>                               <C>            <C>            <C>            <C>            <C>            <C>
ASSETS
Cash                              $              $              $              $              $              $
                                          --             --               24           --             --             --
Notes receivable from                     --             --             --             --             --             --
   participants
Investment in Trinity
 Industries, Inc. common stock,
 at fair value                      14,157,579           --             --             --             --             --
 ($13,230,551 cost)
Investment in Halter Marine
 Group, Inc. common stock, at
 fair value                            880,943           --             --             --             --             --
 ($2,969,517 cost)
Investment in mutual funds, at
 fair value ($99,245,222 cost)            --       28,896,556     44,132,441     26,643,069      8,611,647         46,266
Interest income receivable                --             --             --             --            9,874           --
Contribution receivable from           980,679      1,319,348      1,852,530      1,195,145        398,008         53,395
   Trinity
Contribution receivable from
   employees                           123,016        165,767        189,611        151,219         47,995          8,463
                                  ------------   ------------   ------------   ------------   ------------   ------------
Plan equity                       $ 16,142,217   $ 30,381,671   $ 46,174,606   $ 27,989,433   $  9,067,524   $    108,124
                                  ============   ============   ============   ============   ============   ============
</TABLE>

<TABLE>
<CAPTION>


                                    CHASE VISTA
                                    INTERNATIONAL  PARTICIPANT
                                       EQUITY         LOANS           TOTAL
                                    ------------   ------------   ------------
<S>                                 <C>            <C>            <C>
ASSETS
Cash                                $              $              $
                                            --             --               24
Notes receivable from                       --        1,442,735      1,442,735
   participants
Investment in Trinity
 Industries, Inc. common stock,
 at fair value                              --             --       14,157,579
 ($13,230,551 cost)
Investment in Halter Marine
 Group, Inc. common stock, at
 fair value                                 --             --          880,943
 ($2,969,517 cost)
Investment in mutual funds, at
 fair value ($99,245,222 cost)            12,538           --      108,342,517
Interest income receivable                  --             --            9,874
Contribution receivable from              11,192           --        5,810,297
   Trinity
Contribution receivable from
   employees                               2,152         42,181        730,404
                                    ------------   ------------   ------------
Plan equity                         $     25,882   $  1,484,916   $131,374,373
                                    ============   ============   ============
</TABLE>

See accompanying notes.


                                       2

<PAGE>   6




                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates


             Statement of Financial Condition, with Fund Information

                                 March 31, 1998


<TABLE>
<CAPTION>
                                                                                             PUTNAM
                                                             GUARANTEED       PUTNAM       U.S. GOVT.
                                                STOCK        INVESTMENT      GROWTH &        INCOME
                                               ACCOUNT        ACCOUNT         INCOME          TRUST
                                             ------------   ------------   ------------   ------------
ASSETS
<S>                                          <C>            <C>            <C>            <C>
Cash and short-term investments              $    311,055   $  2,187,542   $     15,001   $     15,276

Notes  receivable from participants                  --             --             --             --
Investment in Trinity Industries, Inc.
   common stock, at fair value ($9,856,316     23,455,410           --             --             --
   cost)
Investment in Halter Marine Group, Inc.
   common stock, at fair value ($3,472,278      2,771,188           --             --             --
   cost)
Investment in guaranteed investment
   contracts, at contract value                      --       37,478,543           --             --
Investment in mutual funds, at fair value
   ($39,991,701 cost)                                --             --       21,241,233      6,845,093
Interest receivable                                 1,243        195,007            259            123
Contribution receivable from Trinity              681,292      1,406,200        902,855        264,223
Contribution receivable from employees               --             --             --             --
                                             ------------   ------------   ------------   ------------
Plan equity                                  $ 27,220,188   $ 41,267,292   $ 22,159,348   $  7,124,715
                                             ============   ============   ============   ============
</TABLE>


<TABLE>
<CAPTION>


                                                  PUTNAM       PARTICIPANT
                                                  VOYAGER         LOANS          TOTAL
                                                ------------   ------------   ------------
ASSETS
<S>                                             <C>            <C>            <C>
Cash and short-term investments                 $   14,999     $     76,521   $  2,620,394

Notes  receivable from participants                     --        1,266,866      1,266,866
Investment in Trinity Industries, Inc.
   common stock, at fair value ($9,856,316              --             --       23,455,410
   cost)
Investment in Halter Marine Group, Inc.
   common stock, at fair value ($3,472,278              --             --        2,771,188
   cost)
Investment in guaranteed investment
   contracts, at contract value                         --             --       37,478,543
Investment in mutual funds, at fair value
   ($39,991,701 cost)                             22,909,895           --       50,996,221
Interest receivable                                      285            812        197,729
Contribution receivable from Trinity                 981,319           --        4,235,889
Contribution receivable from employees                  --           39,993         39,993
                                                ------------   ------------   ------------
Plan equity                                     $ 23,906,498   $  1,384,192   $123,062,233
                                                ============   ============   ============
</TABLE>


See accompanying notes.


                                       3

<PAGE>   7

                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates


      Statement of Income and Changes in Plan Equity with Fund Information

                            Year ended March 31, 1999


<TABLE>
<CAPTION>
                                                                                      PUTNAM                             CHASE
                                                                                       U.S.                              VISTA
                                                   GUARANTEED       PUTNAM             GOVT.                             PRIME
                                    STOCK          INVESTMENT       GROWTH &          INCOME           PUTNAM            MONEY
                                   ACCOUNT          ACCOUNT         INCOME             TRUST           VOYAGER           MARKET
                                -------------    -------------    -------------    -------------    -------------    -------------
<S>                             <C>              <C>              <C>              <C>              <C>              <C>
Net investment income:

  Interest                      $      11,833    $   2,187,308    $       3,344    $       1,837    $       4,042    $     509,445
  Dividends                           386,374             --          2,017,648          426,349        1,851,484             --
                                -------------    -------------    -------------    -------------    -------------    -------------
                                      398,207        2,187,308        2,020,992          428,186        1,855,526          509,445
  Net realized gain (loss) on
   sale of investments                (80,991)            --          3,340,788          (71,418)         502,063             --
  Unrealized appreciation
   (depreciation) of
   investments                    (14,104,550)            --         (4,451,348)         (19,258)       1,460,688             --
Contributions:
  Employee contributions            3,281,801        3,968,916        3,022,426          853,395        4,410,888        1,285,100
  Employer contributions              980,679             --               --               --          1,319,348        1,852,530
                                -------------    -------------    -------------    -------------    -------------    -------------
                                    4,262,480        3,968,916        3,022,426          853,395        5,730,236        3,137,630
Withdrawals, distributions,
   transfers and other             (1,553,117)     (47,423,516)     (26,092,206)      (8,315,620)      (3,073,340)      42,527,531
                                -------------    -------------    -------------    -------------    -------------    -------------
Net increase (decrease) in
   plan equity                    (11,077,971)     (41,267,292)     (22,159,348)      (7,124,715)       6,475,173       46,174,606
Plan equity at beginning of
   year                            27,220,188       41,267,292       22,159,348        7,124,715       23,906,498             --
                                -------------    -------------    -------------    -------------    -------------    -------------
Plan equity at end of year      $  16,142,217    $        --      $        --      $        --      $  30,381,671    $  46,174,606
                                =============    =============    =============    =============    =============    =============
</TABLE>


<TABLE>
<CAPTION>
                                      CHASE
                                      CORE          CHASE             CHASE        CHASE VISTA
                                     EQUITY        VISTA U.S.         VISTA       INTERNATIONAL    PARTICIPANT
                                      FUND         TREASURY          BALANCED         EQUITY          LOANS            TOTAL
                                 -------------   -------------    -------------   -------------   -------------    -------------
<S>                              <C>             <C>              <C>             <C>             <C>              <C>
Net investment income:

  Interest                       $        --     $       9,874    $        --     $        --     $       3,836    $   2,731,519
  Dividends                              2,568         126,563              286            --              --          4,811,272
                                 -------------   -------------    -------------   -------------   -------------    -------------
                                         2,568         136,437              286            --             3,836        7,542,791

  Net realized gain (loss) on
   sale of investments                     138             (33)            --              --              --          3,690,547
  Unrealized appreciation
   (depreciation) of
   investments                       1,212,586        (110,113)             147              71            --        (16,011,777)
Contributions:
  Employee contributions               910,036         284,455           53,720          14,590         452,921       18,538,248
  Employer contributions             1,195,145         398,008           53,395          11,192            --          5,810,297
                                 -------------   -------------    -------------   -------------   -------------    -------------
                                     2,105,181         682,463          107,115          25,782         452,921       24,348,545
Withdrawals, distributions,
   transfers and other              24,668,960       8,358,770              576              29        (356,033)     (11,257,966)
                                 -------------   -------------    -------------   -------------   -------------    -------------
Net increase (decrease) in
   plan equity                      27,989,433       9,067,524          108,124          25,882         100,724        8,312,140
Plan equity at beginning of
   year                                   --              --               --              --         1,384,192      123,062,233
                                 -------------   -------------    -------------   -------------   -------------    -------------
Plan equity at end of year       $  27,989,433   $   9,067,524    $     108,124   $      25,882   $   1,484,916    $ 131,374,373
                                 =============   =============    =============   =============   =============    =============
</TABLE>


See accompanying notes


                                       4

<PAGE>   8

                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

      Statement of Income and Changes in Plan Equity, with Fund Information

                            Year ended March 31, 1998


<TABLE>
<CAPTION>
                                                                    GUARANTEED         PUTNAM         PUTNAM U.S.
                                                      STOCK         INVESTMENT        GROWTH &       GOVT. INCOME
                                                     ACCOUNT         ACCOUNT           INCOME           TRUST
                                                  -------------    -------------    -------------    -------------
<S>                                               <C>              <C>              <C>              <C>
Net investment income:
  Interest                                        $      13,478    $   2,357,177    $       3,746    $       1,695

  Dividends                                             280,127             --          2,294,268          387,367
                                                  -------------    -------------    -------------    -------------
                                                        293,605        2,357,177        2,298,014          389,062


Net realized gain (loss) on sale of investments         347,060             --            238,425           (4,246)

Unrealized appreciation (depreciation) of
   investments                                       12,455,553             --          2,388,560          202,427


Contributions:

  Employee contribution                               2,761,318        4,682,007        3,178,363          924,506
  Employer contribution                                 681,292        1,406,200          902,855          264,223
                                                  -------------    -------------    -------------    -------------
                                                      3,442,610        6,088,207        4,081,218        1,188,729

Withdrawals, distributions,
   transfers and other                               (1,809,717)      (4,445,632)        (688,901)        (407,255)
                                                  -------------    -------------    -------------    -------------

Net increase in plan equity                          14,729,111        3,999,752        8,317,316        1,368,717
Plan equity at beginning of year                     12,491,077       37,267,540       13,842,032        5,755,998
                                                  -------------    -------------    -------------    -------------
Plan equity at end of year                        $  27,220,188    $  41,267,292    $  22,159,348    $   7,124,715
                                                  =============    =============    =============    =============
</TABLE>


<TABLE>
<CAPTION>
                                                        PUTNAM         PARTICIPANT
                                                        VOYAGER           LOANS            TOTAL
                                                     -------------    -------------    -------------
<S>                                                  <C>              <C>              <C>
Net investment income:
  Interest                                           $       4,569    $       5,414    $   2,386,079

  Dividends                                              1,091,255             --          4,053,017
                                                     -------------    -------------    -------------
                                                         1,095,824            5,414        6,439,096


Net realized gain (loss) on sale of investments            365,269             --            946,508

Unrealized appreciation (depreciation) of
   investments                                           5,733,735           (1,483)      20,778,792


Contributions:

  Employee contribution                                  3,627,687          457,886       15,631,767
  Employer contribution                                    981,319             --          4,235,889
                                                     -------------    -------------    -------------
                                                         4,609,006          457,886       19,867,656

Withdrawals, distributions,
   transfers and other                                  (1,445,982)        (100,856)      (8,898,343)
                                                     -------------    -------------    -------------

Net increase in plan equity                             10,357,852          360,961       39,133,709
Plan equity at beginning of year                        13,548,646        1,023,231       83,928,524
                                                     -------------    -------------    -------------
Plan equity at end of year                           $  23,906,498    $   1,384,192    $ 123,062,233
                                                     =============    =============    =============
</TABLE>


See accompanying notes.


                                       5

<PAGE>   9



                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates


      Statement of Income and Changes in Plan Equity, with Fund Information

                            Year ended March 31, 1997


<TABLE>
<CAPTION>
                                                                   GUARANTEED         PUTNAM       PUTNAM U.S.
                                                     STOCK         INVESTMENT        GROWTH &     GOVT. INCOME
                                                    ACCOUNT         ACCOUNT           INCOME          TRUST
                                                  ------------    ------------    ------------    ------------
<S>                                               <C>             <C>             <C>             <C>
Net investment income:
  Interest                                        $      4,733    $  2,618,472    $      2,184    $    335,753
  Dividends                                            277,519            --           961,995            --
                                                  ------------    ------------    ------------    ------------
                                                       282,252       2,618,472         964,179         335,753

Net realized gain (loss) on sale of investments         26,352            --            36,728         (29,828)

Unrealized appreciation (depreciation) of
   investments                                      (2,325,333)           --           676,370         (32,663)

Contributions:
  Employee contribution                              2,758,108       5,065,279       2,387,157         953,693
  Employer contribution                                676,128       1,779,673         758,561         271,819
                                                  ------------    ------------    ------------    ------------
                                                     3,434,236       6,844,952       3,145,718       1,225,512

Withdrawals, distributions,
   transfers and other                              (1,494,617)     (6,515,500)      1,544,735        (190,070)
Halter Maine Group, Inc. divestiture                (1,556,223)     (7,473,914)     (1,220,040)       (658,137)
                                                  ------------    ------------    ------------    ------------


Net increase (decrease) in plan equity              (1,633,333)     (4,525,990)      5,147,690         650,567
Plan equity at beginning of year                    14,124,410      41,793,530       8,694,342       5,105,431

                                                  ------------    ------------    ------------    ------------
Plan equity at end of year                        $ 12,491,077    $ 37,267,540    $ 13,842,032    $  5,755,998
                                                  ============    ============    ============    ============
</TABLE>


<TABLE>
<CAPTION>
                                                       PUTNAM         PARTICIPANT
                                                       VOYAGER           LOANS          TOTAL
                                                     ------------    ------------    ------------
<S>                                                  <C>             <C>             <C>
Net investment income:
  Interest                                           $      3,032    $      7,358    $  2,971,532
  Dividends                                               642,747            --         1,882,261
                                                     ------------    ------------    ------------
                                                          645,779           7,358       4,853,793

Net realized gain (loss) on sale of investments            21,920            --            55,172

Unrealized appreciation (depreciation) of
   investments                                           (928,839)          1,483      (2,608,982)

Contributions:
  Employee contribution                                 2,751,676         332,111      14,248,024
  Employer contribution                                   906,172            --         4,392,353
                                                     ------------    ------------    ------------
                                                        3,657,848         332,111      18,640,377

Withdrawals, distributions,
   transfers and other                                  3,469,873        (238,145)     (3,423,724)
Halter Maine Group, Inc. divestiture                   (1,383,931)           --       (12,292,245)
                                                     ------------    ------------    ------------


Net increase (decrease) in plan equity                  5,482,650         102,807       5,224,391
Plan equity at beginning of year                        8,065,996         920,424      78,704,133

                                                     ------------    ------------    ------------
Plan equity at end of year                           $ 13,548,646    $  1,023,231    $ 83,928,524
                                                     ============    ============    ============
</TABLE>



See accompanying notes.


                                       6
<PAGE>   10



                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                          Notes to Financial Statements

                             March 31, 1999 and 1998





1. DESCRIPTION OF THE PLAN

GENERAL

The Profit Sharing Plan for Employees of Trinity Industries, Inc. and Certain
Affiliates (the Plan) was adopted by the Board of Directors of Trinity
Industries, Inc. (the Board) on December 11, 1986 and became effective January
1, 1987, for eligible employees of Trinity Industries, Inc. and Certain
Affiliates (the Employer). The Plan was amended and restated effective April 1,
1994. The Plan is a defined contribution plan designed to comply with the
provisions of Title I of the Employee Retirement Income Security Act of 1974
(ERISA). The following is a brief description of the Plan. Participants should
refer to the Plan document for complete information regarding the Plan. The
Plan's fiscal year end is March 31.

DIVESTITURE

At the close of business on March 31, 1997, Trinity Industries, Inc. completed
the divestiture, which commenced on September 26, 1996, of Halter Marine Group,
Inc. (Halter) by distributing the remaining shares of Halter stock to its
stockholders in the form of a tax-free distribution. The Plan received .348
shares of Halter common stock for each share of Trinity Common Stock held in the
Plan in the form of a tax-free distribution.

The financial statements for the year ended March 31, 1997 reflect the transfer
of participants' assets, who were employed by Halter, out of the Plan.

PARTICIPATION

Each employee is eligible to contribute to the Plan on the first day of the
calendar quarter on or immediately following his employment date with the
Company and must meet the following requirements:

     Must be classified as a full-time, part-time, or temporary employee of
     Trinity Industries, Inc.; and

     Must be in a unit of employees who are designated as eligible to
     participate in the Plan; and

     Must not be included in a unit of employees covered by a collective
     bargaining agreement unless benefits under this Plan were included in an
     agreement as a result of good faith bargaining.


                                       7
<PAGE>   11

                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



1. DESCRIPTION OF THE PLAN (CONTINUED)


Eligible employees automatically become participants and must indicate on the
form or forms provided by the Plan Committee (Committee) whether or not they
want to make contributions to the Plan. If they elect to contribute, they will
authorize the Employer to make payroll deductions for contributions to the Plan.

CONTRIBUTIONS


For fiscal years 1999 and 1998, each Plan participant agreed to contribute not
less than two percent nor more than fourteen percent of their compensation in
one percent increments as designated by the participant. A participant's salary
reduction may not exceed specified IRS limits for each calendar year. A salary
reduction and contribution agreement must be entered into by each employee as
the employee begins participation in the Plan and may be amended by such
employee twice each year.

Employer matching contributions shall be made if Company earnings are at least
sufficient to pay dividends to stockholders ($0.69, $0.68, and $0.68 per share
for the years ended March 31, 1999, 1998, and 1997, respectively) but in no
event less than $0.33 per share of common stock. Effective April 1, 1998, if the
Employer matching contribution is made, then each participant shall receive an
amount equal to a percentage of that portion of such participant's employee
contribution up to six percent of such participant's total compensation for the
year under the following schedule:


<TABLE>
<CAPTION>
                                                        PERCENTAGE OF
            YEARS OF SERVICE                        EMPLOYER CONTRIBUTION
<S>                                                         <C>
          Less than 1                                         0%
          1 but less than 2                                  25%
          2 but less than 3                                  30%
          3 but less than 4                                  35%
          4 but less than 5                                  40%
          5 years                                            50%
</TABLE>


Prior to April 1, 1998, if the Employer matching contribution was made, then
each participant with at least five years of service received an amount equal to
50 percent of that portion of such participant's employee contribution up to six
percent of such participant's total compensation for the year, and each
participant with at least one but less than five years of service received an
amount equal to 25 percent of that portion of such participant's employee
contribution up to


                                       8

<PAGE>   12
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



1. DESCRIPTION OF THE PLAN (CONTINUED)

six percent of such participant's total compensation for the year.

Employer contributions are net of forfeitures, as defined. Employer
contributions for a given plan year shall be deposited in the Profit Sharing
Trust for Employees of Trinity Industries, Inc. and Certain Affiliates (the
Trust Fund) as defined below, no later than the date on which the Employer files
its federal income tax return for such year.

The Employer and Chase Bank of Texas, N.A. (the Trustee) have entered into a
Trust Agreement under which the latter acts as Trustee under the Plan.

The Plan offers the following investment options (hereafter collectively
referred to as the Trust Fund):

         Trinity Stock Investment Account (Stock Account) is an investment in
         shares of Employer common stock purchased on behalf of the participants
         and Halter common stock by virtue of the tax-free distribution. Idle
         cash is invested in interest-bearing accounts until such time as it can
         be utilized to purchase Employer common stock.

         Guaranteed Investment Contract Account (the Guaranteed Investment
         Account) is an investment in guaranteed investment contracts issued by
         various insurance companies selected annually by the Committee.
         Effective January 1, 1999, the Guaranteed Investment Account is no
         longer an investment option.

         At March 31, 1998, the guaranteed investment contracts had guaranteed
         annual rates of return of 7.33% (GAC 8672), 6.08% (GAC 20254), and
         5.66% (GAC 16795). The crediting interest rates approximated average
         yields.

Participant's accounts invested in the Guaranteed Investment Account earn
interest at a rate blended from all of the contracts included in the Guaranteed
Investment Account. The account is credited with earnings on the underlying
investments and charged for plan withdrawals and administrative expenses charged
by the insurance companies. Transfers of participants accounts to and from the
Guaranteed Investment Account are not permitted. However, during fiscal year
1997, participants were offered a one-time option to transfer monies out of the
Guaranteed Investment Account and into other fund options.


                                       9
<PAGE>   13
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



1. DESCRIPTION OF THE PLAN (CONTINUED)


         Mutual Funds Investment Accounts are investments in registered
         investment companies selected by the Committee. At March 31, 1999 the
         funds are Putnam Voyager, Chase Vista Prime Money Market, Chase Core
         Equity, Chase Vista U.S. Treasury, Chase Vista Balanced, and Chase
         Vista International Equity. At March 31, 1998, the funds were Putnam
         U.S. Government Income Trust, Putnam Growth and Income, and Putnam
         Voyager.


Participants may elect the extent to which assets are invested in the options
described above in increments of 10% or 25%.

The number of participants in each fund as of March 31, 1999 and 1998,
respectively, was as follows: 10,606 and 3,936 in Stock Account, 0 and 4,543 in
Guaranteed Interest Account, 0 and 4,150 in Putnam Growth & Income, 0 and 1,743
in Putnam U.S. Government Income Trust, 6,508 and 4,246 in Putnam Voyager, 9,182
and 0 in Chase Vista Prime Money Market, 6,550 and 0 in Chase Core Equity, 3,786
and 0 in Chase Vista U.S. Treasury, 290 and 0 in Chase Vista Balanced Fund, and
118 and 0 in Chase Vista International Equity.

BENEFITS

Distribution of a participant's account balance is payable upon retirement at or
after age 65, total disability, death, or termination of employment.
Distribution is equal to the salary reduction contribution and related earnings
plus the vested portion of the Employer contribution and related earnings.


Withdrawals of up to 100 percent of the employee contribution can be made only
to meet "immediate and heavy financial needs" (medical care, college tuition,
the purchase of a principal residence, or to prevent the foreclosure on a
principal residence) as long as the funds are not available for such needs from
other sources. No withdrawal can be made against the earnings on the employee
contributions or against the Employer contribution and related earnings. These
restrictions no longer apply when the participant reaches age 59 1/2.


Loans for "immediate and heavy financial needs" may be made for a minimum of
$1,000 up to a maximum of $50,000, not to exceed 50% of the Employee
contribution and related earnings and not to exceed 50% of the vested portion of
the Employer contribution and related earnings. Loans are subject to rules and
regulations established by the Committee, as defined in the Plan.


                                       10

<PAGE>   14
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



1. DESCRIPTION OF THE PLAN (CONTINUED)


VESTING

The Employer contribution and related earnings (losses) vest to participants,
depending upon the number of years of vesting service, as defined, completed by
such participant as follows:


<TABLE>
<CAPTION>
            YEARS OF SERVICE                        PERCENTAGE VESTED
           ------------------                       -----------------
<S>                                                          <C>
           Less than 1                                       0%
           1 but less than 2                                20%
           2 but less than 3                                40%
           3 but less than 4                                60%
           4 but less than 5                                80%
           5 or more                                       100%
</TABLE>


Participants are 100% vested in their Employer contribution and allocated
portion of related earnings (losses) upon their attainment of age 65 and are
always 100% vested in their employee contribution and related earnings (losses)
on such contribution.

ADMINISTRATION OF THE PLAN

The Plan is administered by the Committee, consisting of at least three persons
who are appointed by the Board. The members of the Committee serve at the
discretion of the Board, and any Committee member who is an employee of the
Employer shall not receive compensation for his services.

A separate account is maintained for each participant. The Plan provides that
account balances for participants are adjusted periodically as follows:

         Employee contributions are generally allocated on a quarterly basis;

         Participant's share of the Employer contribution shall be allocated to
         the participant's account as of a date no later than the last day of
         the Plan year;


                                       11
<PAGE>   15
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



1. DESCRIPTION OF THE PLAN (CONTINUED)

         Earnings and appreciation or depreciation in the fair value of
         investment assets of the Trust Fund for each calendar quarter shall be
         allocated to the accounts of participants, former participants and
         beneficiaries who had unpaid balances in their accounts on the last day
         of such calendar quarter in proportion to the balances in such accounts
         at the beginning of the calendar quarter.

Upon request, distributions shall be made no earlier than the later of the last
day of the calendar quarter in which entitlement occurs or the date on which the
Committee determines the final balances. Distributions from the Stock Account
shall be made in cash unless otherwise designated by the participant.

INCOME TAX STATUS


The Plan has received determination letters from the Internal Revenue Service
dated November 4, 1994, September 27, 1996, April 30, 1997 and December 9, 1998,
stating that the Plan is qualified under Section 401(a) of the Internal Revenue
Code (the Code) and, therefore, the related trust is exempt from taxation. Once
qualified, the Plan is required to operate in conformity with the Code to
maintain its qualification. The Plan Administrator believes the Plan is being
operated in compliance with the applicable requirements of the Code and,
therefore, believes that the Plan is qualified and the related trust is tax
exempt.


Employee contributions and Employer contributions are not included in the
participant's federal taxable income in the year such contribution are made. A
participant shall not be subject to federal income taxes with respect to
participation in the Plan until the amounts are withdrawn or distributed.

AMENDMENT OR TERMINATION OF THE PLAN

The Employer may amend the Plan at any time. However, no amendment, unless made
to secure approval of the Internal Revenue Service or other governmental agency,
may operate retroactively to reduce or divest the then vested interest in the
Plan of any participant, former participant or beneficiary, or to reduce or
divest any benefit payable under the Plan unless all participants, former
participants and beneficiaries then having vested interests or benefit payments
affected thereby consent to such amendment.


                                       12
<PAGE>   16
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



1. DESCRIPTION OF THE PLAN (CONTINUED)

The Employer may terminate the Plan at any time. Upon complete or partial
termination, the accounts of all participants affected thereby shall become 100%
vested, and the Committee shall direct the Trustee to distribute the assets in
the Trust Fund, after receipt of any required approval by the Internal Revenue
Service and payment of any expenses properly chargeable thereto, to
participants, former participants, and beneficiaries in proportion to their
respective account balances.

2. SIGNIFICANT ACCOUNTING POLICIES

INVESTMENTS AND NET INVESTMENT INCOME

Cash and cash equivalents are valued at cost which approximates fair value.
Investments in the common stock of the Employer and Halter are value at their
quoted market price. Investment in mutual funds are valued at the quoted market
prices which represent the net asset value of shares held by the Plan at year
end. The fair value approximates the recorded contract value for the guaranteed
investment contracts.

Security transactions are recorded on a trade date basis. The statements of
income and changes in Plan equity include net unrealized appreciation or
depreciation in fair value on investments.

The Plan's financial statements are prepared on an accrual basis of accounting.

REALIZED GAINS AND LOSSES

Realized gains and losses have been calculated using average cost.

USE OF ESTIMATES IN THE PREPARATION OF FINANCIAL STATEMENTS

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates that affect the
amounts in the financial statements and accompanying notes. Actual results could
differ from those estimates.


                                       13
<PAGE>   17
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



3. INVESTMENTS

Investments are as follows:


<TABLE>
<CAPTION>
                                                        MARCH 31, 1999                                MARCH 31, 1998
                                           ----------------------------------------       ---------------------------------------
                                             NO. OF                                        NO. OF
                                             SHARES         COST        FAIR VALUE         SHARES         COST        FAIR VALUE
                                           ----------   ------------   ------------       ---------   ------------   ------------
<S>                                        <C>          <C>            <C>                <C>         <C>            <C>
Trinity Industries, Inc. common stock         481,960   $ 13,230,551   $ 14,157,579*        426,462   $  9,856,316   $ 23,455,410*

Halter Marine Group, Inc. common stock

                                              151,560      2,969,517        880,943         174,563      3,427,278      2,771,188



Guaranteed investment contracts:

     GAC 20254                                   --             --             --              --       16,156,699     16,156,699*
     GAC 8672                                    --             --             --              --        4,167,290      4,167,290
     GAC 16795                                   --             --             --              --       17,154,554     17,154,554*
                                                        ------------   ------------                   ------------   ------------
                                                 --             --             --              --       37,478,543     37,478,543

Mutual funds:

   Putnam Growth & Income                        --             --             --         1,409,471     16,789,885     21,241,233*
   Putnam U.S. Gov't Income Trust                --             --             --           594,704      6,825,834      6,845,093*
   Putnam Voyager                           1,245,004     20,901,928     28,896,556*      1,308,932     16,375,982     22,909,895*
   Chase Core Equity                          936,487     25,430,433     26,643,069*           --             --             --
   Chase Vista International Equity               999         12,517         12,538            --             --             --
   Chase Vista Balanced                         2,882         46,119         46,266            --             --             --
   Chase Vista Prime Money Market          44,132,441     44,132,441     44,132,441*           --             --             --
   Chase Vista US Treasury                    774,428      8,721,784      8,611,647*           --             --             --
                                                        ------------   ------------                   ------------   ------------
                                                          99,245,222    108,342,517                     39,991,701     50,996,221

Participant loans                                          1,442,735      1,442,735                      1,266,866      1,266,866
                                                        ------------   ------------                   ------------   ------------
                                                        $116,888,025   $124,823,774                   $ 92,020,704   $115,968,228
                                                        ============   ============                   ============   ============
</TABLE>


* Individual investment represents 5% or more of the fair value of net assets.


                                       14
<PAGE>   18
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



4. RECONCILIATION OF FINANCIAL STATEMENTS TO THE FORM 5500

The following is a reconciliation of Plan equity per the financial statements to
the Form 5500:


<TABLE>
<CAPTION>
                                                           MARCH 31
                                                     1999             1998
                                                -------------    -------------
<S>                                             <C>              <C>
Plan equity per the financial statements        $ 131,374,373    $ 123,062,233
Amounts allocated to withdrawing participants      (4,665,228)      (2,792,574)
                                                -------------    -------------
Plan equity per the Form 5500                   $ 126,709,145    $ 120,269,659
                                                =============    =============
</TABLE>


The following is a reconciliation of withdrawals, distributions, and transfers
per the financial statements to the Form 5500:


<TABLE>
<CAPTION>
                                                                           YEAR ENDED
                                                                            MARCH 31,
                                                                              1999
                                                                           -----------
<S>                                                                        <C>
Withdrawals, distributions and transfers per the
   financial statements                                                    $11,257,966

Amounts allocated to withdrawing participants at end of year                 4,665,228

Amounts allocated to withdrawing participants at beginning of year          (2,792,574)
                                                                           -----------
Withdrawals, distributions and transfers per the Form 5500
                                                                           $13,130,620
                                                                           ===========
</TABLE>


Amounts allocated to withdrawing participants are recorded on the Form 5500 for
withdrawals that have been processed and approved for payment prior to March 31
but not yet paid as of that date.


                                       15

<PAGE>   19
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



5. UNREALIZED APPRECIATION (DEPRECIATION) OF INVESTMENTS AND NET REALIZED GAIN
OR LOSS ON SALE OF INVESTMENTS

Unrealized appreciation (depreciation) of investments in Trinity and Halter
common stock, mutual funds, and participant loans for the years ended March 31,
1999, 1998, and 1997 were determined as follows:


<TABLE>
<CAPTION>
                             INVESTMENTS AT   INVESTMENTS AT   NET INCREASE
                               FAIR VALUE          COST         (DECREASE)
                             -------------    -------------    -------------
March 31, 1999
Trinity common stock
<S>                          <C>              <C>              <C>
   March 31, 1999            $  14,157,579    $  13,230,551    $     927,028
   March 31, 1998               23,455,410        9,856,316       13,599,094
                             -------------    -------------    -------------
                                (9,297,831)       3,374,235      (12,672,066)

Halter common stock
   March 31, 1999                  880,941        2,969,517       (2,088,576)
   March 31, 1998                2,771,188        3,427,278         (656,090)
                             -------------    -------------    -------------
                                (1,890,245)        (457,761)      (1,432,486)

Mutual funds
   March 31, 1999              108,342,517       99,245,222        9,097,295
   March 31, 1998               50,996,221       39,991,701       11,004,520

                             -------------    -------------    -------------
                                57,346,296       59,253,521       (1,907,225)

Participant loans
   March 31, 1999                1,442,735        1,442,735             --
   March 31, 1998                1,266,866        1,266,866             --
                             -------------    -------------    -------------
                                   175,869          175,869             --

Unrealized depreciation of
   investments                                                 ($ 16,011,777)
                                                               =============
</TABLE>


                                       16
<PAGE>   20
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



5. UNREALIZED APPRECIATION (DEPRECIATION) OF INVESTMENTS AND NET REALIZED GAIN
OR LOSS ON SALES OF INVESTMENTS (CONTINUED)


<TABLE>
<CAPTION>
                            INVESTMENTS AT  INVESTMENTS AT   NET INCREASE
                              FAIR VALUE         COST         (DECREASE)
                             ------------    ------------    ------------
<S>                          <C>             <C>             <C>
March 31, 1998
Trinity common stock
   March 31, 1998            $ 23,455,410    $  9,856,316    $ 13,599,094
   March 31, 1997              11,707,801      11,220,350         487,451
                             ------------    ------------    ------------
                               11,747,609      (1,364,034)     13,111,643

Halter common stock
   March 31, 1998               2,771,188       3,427,278        (656,090)
   March 31, 1997                    --              --              --
                             ------------    ------------    ------------
                                2,771,188       3,427,278        (656,090)

Mutual funds
   March 31, 1998              50,996,221      39,991,701      11,004,520
   March 31, 1997              30,931,691      28,251,893       2,679,798
                             ------------    ------------    ------------
                               20,064,530      11,739,808       8,324,722

Participant loans
   March 31, 1998               1,266,866       1,266,866            --
   March 31, 1997                 959,157         957,674           1,483
                             ------------    ------------    ------------
                                  307,709         309,192          (1,483)

Unrealized appreciation of
   investments                                               $ 20,778,792
                                                             ============
</TABLE>


                                       17
<PAGE>   21
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



5. UNREALIZED APPRECIATION (DEPRECIATION) OF INVESTMENTS AND NET REALIZED GAIN
OR LOSS ON SALE OF INVESTMENTS (CONTINUED)


<TABLE>
<CAPTION>
                            INVESTMENTS AT  INVESTMENTS AT   NET INCREASE
                              FAIR VALUE         COST         (DECREASE)
                             ------------    ------------    ------------
<S>                          <C>             <C>             <C>
March 31, 1997
Trinity common stock
   March 31, 1997            $ 11,707,801    $ 11,220,350    $    487,451
   March 31, 1996              13,156,629      10,343,846       2,812,783
                             ------------    ------------    ------------
                               (1,448,828)        876,504      (2,325,332)

Putnam mutual funds
   March 31, 1997              30,931,691      28,251,893       2,679,798
   March 31, 1996              19,569,446      16,604,515       2,964,931
                             ------------    ------------    ------------
                               11,362,245      11,647,378        (285,133)

Participant loans
   March 31, 1997                 959,157         957,674           1,483
   March 31, 1996                 863,724         863,724            --
                             ------------    ------------    ------------
                                   95,433          93,950           1,483

Unrealized depreciation of
   investments                                               ($ 2,608,982)
                                                             ============
</TABLE>


                                       18
<PAGE>   22
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



5. UNREALIZED APPRECIATION (DEPRECIATION) OF INVESTMENTS AND NET REALIZED GAIN
OR LOSS ON SALE OF INVESTMENTS (CONTINUED)

Net realized gain or loss on sale of investments in Trinity and Halter common
stock, mutual funds, and participant loans for the years ended March 31, 1999,
1998, and 1997 are as follows:


<TABLE>
<CAPTION>
                                                      NET REALIZED
                                                    GAIN OR LOSS ON
                           AGGREGATE     AGGREGATE      SALE OF
                           PROCEEDS        COST       INVESTMENTS
                          -----------   -----------   -----------
<S>                       <C>           <C>           <C>
March 31, 1999
   Trinity common stock   $ 1,697,458   $ 1,625,336   $    72,122
   Halter common stock        473,362       626,475      (153,113)
   Mutual funds            82,705,695    78,934,157     3,771,538
                          -----------   -----------   -----------
                          $84,876,515   $81,185,968   $ 3,690,547
                          ===========   ===========   ===========

March 31, 1998
   Trinity common stock   $ 1,221,055   $ 1,067,942   $  (153,113)
   Halter common stock      1,097,263       903,316       193,947
   Mutual funds            16,697,796    16,098,348       599,448
                          -----------   -----------   -----------
                          $19,016,114   $18,069,606   $   946,508
                          ===========   ===========   ===========
March 31, 1997

   Trinity common stock   $ 3,709,239   $ 3,682,887   $    26,352
   Halter common stock           --            --            --
   Mutual funds            16,262,136    16,233,316        28,820
                          -----------   -----------   -----------
                          $19,971,375   $19,916,203   $    55,172
                          ===========   ===========   ===========
</TABLE>


                                       19

<PAGE>   23
                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                    Notes to Financial Statements (continued)



6. EXPENSES

The expenses incurred by the Trustee in the performance of its duties, including
the Trustee's compensation and the services of the recordkeeper, shall be paid
by the Plan unless paid by the Employer. The Employer paid $337,328, $526,177,
and $187,993 for recordkeeping and trustee fees on behalf of the Plan for the
fiscal years ended March 31, 1999, 1998, and 1997, respectively.

7. YEAR 2000 (UNAUDITED)

The Company has determined that it will be necessary to take certain steps in
order to ensure that the Plan's information technology (IT) systems are prepared
to handle year 2000 date issues. Both internal and external resources are being
utilized to replace or modify existing IT systems and software applications, and
to test those systems and applications for year 2000 compliance. Approximately
$3.6 million has been spent on compliance efforts company-wide, and an
additional $3.3 million is expected to be spent by the year 2000.

In addition, Plan management has established formal communications with its
third-party service providers to determine if they have developed plans to
address their own year 2000 issues as they relate to the Plan's operations. All
third-party service providers have indicated that they will be year 2000
compliant before critical dates occur. At this time, the Company believes all
significant areas have been identified, remediation is on schedule, and
contingency plans to deal with year 2000 issues will be in place.

8. SUBSEQUENT EVENT

Effective April 1, 1999, the Plan was amended and restated to change the
following: eligibility begins on the first of the month following 60 days of
employment; salary deferral increases or decreases are allowed for any pay
period; the Plan's assets are valued daily; two loans may be outstanding at one
time; investment transfers are permitted on any business day; and salary
deferrals can range from 1% to 14%.


                                       20

<PAGE>   24

                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

           Line 27a - Schedule of Assets Held for Investment Purposes

                                 March 31, 1999


<TABLE>
<CAPTION>
                                                                                                      (e)
                   (b)                                (c)                           (d)             CURRENT
  (a)       IDENTITY OF ISSUE               DESCRIPTION OF INVESTMENT               COST             VALUE
- -------  ------------------------       ---------------------------------       ------------      ------------
<S>      <C>                            <C>                                     <C>               <C>
*        Trinity Industries, Inc.       Common stock; 481,960 shares            $ 13,230,551      $ 14,157,579

*        Halter Marine Group, Inc.      Common stock; 151,560 shares               2,969,517           880,943

*        Putnam Investments, Inc.       Voyager mutual fund; 1,245,004
                                          shares                                  20,901,928        28,896,556
*        Chase Bank of Texas, N.A.      Chase Core Equity; mutual fund;
                                          936,487 shares                          25,430,433        26,643,069

                                        Chase Vista International Equity;
                                          mutual fund; 999 shares
                                                                                      12,517            12,538

                                        Chase Vista Balanced; mutual fund;
                                          2,882 shares                                46,119            46,266

                                        Chase Vista Prime Money Market;
                                          mutual fund; 44,132,441 shares
                                                                                  44,132,441        44,132,441

                                        Chase Vista U.S. Treasury; mutual
                                          fund; 774,428 shares                     8,721,784         8,611,647

*        Participants                   Loans with interest rates ranging
                                          from 9.25% to 10.5%                              -         1,442,735
                                                                                ------------      ------------
                                                                                $115,445,290      $124,823,774
                                                                                ============      ============

*        Party-in-interest
</TABLE>


                                       21
<PAGE>   25


                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

                 Line 27d - Schedule of Reportable Transactions

                            Year ended March 31, 1999


<TABLE>
<CAPTION>
                                                                                                           (h)
                                    (b)                          (c)          (d)           (g)      CURRENT VALUE OF     (i)
         (a)                     DESCRIPTION                   PURCHASE     SELLING       COST OF       ASSET ON       NET GAIN OR
IDENTITY OF PARTY INVOLVED        OF ASSET                      PRICE        PRICE         ASSET     TRANSACTION DATE    (LOSS)
- ---------------------------     -------------                 ----------  -----------   -----------  ----------------  -----------
Category (i) - Individual transactions in excess of 5% of Plan assets.
<S>                         <C>                             <C>           <C>           <C>           <C>              <C>
Chase Bank of Texas, N.A    Short-term Money Market         $21,396,821   $      --     $21,396,821   $21,396,821      $   --
                                                             20,440,325          --      20,440,325    20,440,325          --
                                                              8,183,891          --       8,183,891     8,183,891          --
                                                             24,607,237          --      24,607,237    24,607,237          --
                                                                   --      42,667,333    42,667,333    42,667,333          --
                                                                   --      24,607,237    24,607,237    24,607,237          --
                                                                   --       8,305,104     8,305,104     8,305,104          --
Putnam Investments, Inc.    Growth & Income                        --      24,607,238    21,432,817    24,607,238     3,174,421
Putnam  Investments, Inc.   U.S. Government Income Trust           --       8,142,614     8,215,947     8,142,614       (73,333)
Chase Bank of Texas, N.A    Core Equity                      24,654,560          --      24,654,560    24,654,560          --
Chase Bank of Texas, N.A    Prime Money Market               42,495,141          --      42,495,141    42,495,141          --
Chase Bank of Texas, N.A    U.S. Treasury                     8,353,611          --       8,353,611     8,353,611          --
Metropolitian Life
   Insurance Co.            GAC 20254                              --      16,891,397    16,891,397    16,891,397          --
Travelers                   GAC 16795                              --      19,896,534    19,896,534    19,896,534          --
Travelers                   GAC 16956                        19,983,759          --      19,983,759    19,983,759          --
                                                                   --      20,440,325    20,440,325    20,440,325          --
</TABLE>


                                       22

<PAGE>   26

                      Profit Sharing Plan for Employees of
                 Trinity Industries, Inc. and Certain Affiliates

           Line 27d - Schedule of Reportable Transactions (continued)

                            Year ended March 31, 1999

<TABLE>
<CAPTION>

                                                                                                        (h)
                                 (b)                    (c)              (d)             (g)       CURRENT VALUE OF         (i)
        (a)                   DESCRIPTION             PURCHASE          SELLING        COST OF         ASSET ON         NET GAIN OR
IDENTITY OF PARTY INVOLVED     OF ASSET                 PRICE            PRICE          ASSET      TRANSACTION DATE       (LOSS)
- --------------------------    -----------             -----------      -----------    -----------  ----------------    -----------
Category (iii) - Series of securities transactions in excess of 5% of Plan assets.
<S>                         <C>                      <C>               <C>           <C>           <C>                <C>
Travelers                     GAC 16956               $20,437,394      $        --    $ 20,437,394     $20,437,394     $       --
                                                               --       20,440,325      20,440,325      20,440,325             --


Travelers                     GAC 16795                   241,980               --         241,980         241,980             --
                                                               --       19,896,534      19,896,534      19,896,534             --

Metropolitian Life
Insurance Co.                 GAC 20254                   734,697               --         734,697         734,697             --
                                                               --       16,891,396      16,891,396      16,891,396             --

Putnam Investments, Inc.      Growth and Income         5,905,236               --       5,905,236       5,905,236             --
                                                               --       25,696,918      22,715,420      25,696,918      2,981,498

Putnam Investments, Inc.      Voyager                   6,507,781               --       6,507,781       6,507,781             --
                                                               --        2,106,091       1,604,029       2,106,091        502,062

Putnam Investments, Inc.      U.S. Government           1,847,212               --       1,847,212       1,847,212             --
                                Income Trust                   --        8,597,046       8,525,627       8,597,046        (71,419)

Chase Bank of Texas, N.A.     Chase Core Equity        25,432,228               --      25,432,228      25,432,228             --
                                                               --            1,883           1,745           1,883            138

Chase Bank of Texas, N.A.     Chase Vista Prime        44,222,829               --      44,222,829      44,222,829             --
                                Money Market                   --           90,388          90,388          90,388             --

Chase Bank of Texas, N.A.     Chase Vista U.S.          8,722,835               --       8,722,835       8,722,835             --
                                Treasury                       --            1,041           1,075           1,041            (34)

Chase Bank of Texas, N.A.     Short-term Money         95,929,497               --      95,929,497      95,929,497             --
                                Market                         --       98,557,880      98,557,880      98,557,880             --
</TABLE>


There were no category (ii) or (iv) reportable transactions for the Plan year
ended March 31, 1999. Columns (e) and (f) are not applicable.



                                       23
<PAGE>   27














                                  Exhibits and
                             Supplemental Schedules
















<PAGE>   28

               Consent of Ernst & Young LLP, Independent Auditors


We consent to the incorporation by reference in the Post Effective Amendment No.
1 to the Registration Statement (Form S-8, File No. 33-10937), pertaining to the
Profit Sharing Plan for Employees of Trinity Industries, Inc. and Certain
Affiliates and in the related Prospectus of our report dated June 18, 1999, with
respect to the financial statements and supplemental schedules of the Profit
Sharing Plan for Employees of Trinity Industries, Inc. and Certain Affiliates
included in this Annual Report (Form 11-K) for the year ended March 31, 1999.


                                                        ERNST & YOUNG LLP

Dallas, Texas
June 25, 1999





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