USA TRUCK INC
10-K, 2000-03-30
TRUCKING (NO LOCAL)
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<PAGE>   1
                                  UNITED STATES
                       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 December 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 0-19858

                                 USA TRUCK, INC.
             (Exact name of Registrant as specified in its charter)

        DELAWARE                                       71-0556971
(State or other jurisdiction of               (IRS Employer Identification No.)
incorporation or organization)

   3200 INDUSTRIAL PARK ROAD                           72956
      VAN BUREN, ARKANSAS                             (Zip Code)
(Address of principal executive offices)

       Registrant's telephone number, including area code: (501) 471-2500

           Securities registered pursuant to Section 12(b) of the Act:
                                      NONE

           Securities registered pursuant to Section 12(g) of the Act:

                     COMMON STOCK, PAR VALUE $.01 PER SHARE
                                (Title of class)

     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 (or for such shorter period that the
Registrant was required to file such reports), 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 the 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.

     The aggregate market value of the voting stock held by nonaffiliates of the
Registrant on March 8, 2000 was $34,353,298. (The characterization of officers
and directors of the Registrant as affiliates for purposes of this computation
should not be construed as an admission for any other purpose that any such
person is in fact an affiliate of the Registrant).

     The number of shares outstanding of the Registrant's Common Stock, par
value $ .01, as of March 8, 2000 is 9,267,139.

                       DOCUMENTS INCORPORATED BY REFERENCE


                                              Part of Form 10-K into Which the
               Document                           Document is Incorporated
               --------                           ------------------------
Portions of the Proxy Statement to be                    Part III
sent to stockholders in connection with
2000 Annual Meeting



<PAGE>   2


                                 USA TRUCK, INC.

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>

ITEM NO.                                           CAPTION                                                PAGE
- -------                                            -------                                                ----
<S>         <C>                                                                                           <C>
                                                    PART I

1.          Business.................................................................................       1
2.          Properties...............................................................................       6
3.          Legal Proceedings........................................................................       7
4.          Submission of Matters to a Vote of Security Holders......................................       7

                                                    PART II

5.          Market for Registrant's Common Equity and Related Stockholder Matters....................       8
6.          Selected Financial Data..................................................................       9
7.          Management's Discussion and Analysis of Financial Condition and Results of
                Operations...........................................................................      10
7A.         Quantitative and Qualitative Disclosure about Market Risk................................      15
8.          Financial Statements and Supplementary Data..............................................      16
9.          Changes in and Disagreements with Accountants on Accounting and Financial
                Disclosure...........................................................................      32

                                                   PART III

10.         Directors and Executive Officers of the Registrant.......................................      32
11.         Executive Compensation...................................................................      32
12.         Security Ownership of Certain Beneficial Owners and Management...........................      32
13.         Certain Relationships and Related Transactions...........................................      32

                                                    PART IV

14.         Exhibits, Financial Statement Schedules and Reports on Form 8-K..........................      33
            Signatures...............................................................................      39
</TABLE>



<PAGE>   3


                                     PART I


ITEM 1. BUSINESS

GENERAL

     USA Truck, Inc. (the "Company" or "USA Truck") is engaged in the
transportation of general commodity freight in interstate and foreign commerce.
Operations are conducted primarily east of the Rocky Mountains, but the Company
holds authority to transport and does transport freight between all points in
the continental United States, other than intrastate, and between all points in
the U.S., on the one hand, and the Canadian provinces of Ontario and Quebec, on
the other. The Company also provides the U.S. and Canadian portions of shipments
between points in the U.S. and Canadian provinces of Ontario and Quebec, on the
one hand, and points in Mexico, on the other. The Company transfers freight to,
or receives freight from, Mexican carriers at the U.S.-Mexico border in Laredo,
Texas. Revenue from foreign countries represents less than 5% of total revenues
of the Company for each of the past three years. The principal types of freight
transported include automotive parts and materials, tires, paper and paper
products, glass, retail store merchandise, chemicals, aluminum and manufacturing
materials and supplies. USA Truck does not transport Class A or Class B
explosives, garbage, radioactive materials or hazardous wastes. The Company does
not operate any flatbed, tanker, or other specialized trailers.

     USA Truck transports freight in truckload quantities from individual
shippers to single or multiple destinations on an as-needed basis. Its business
consists primarily of medium haul shipments, more than 700 but less than 1,000
miles. For 1997, 1998, and 1999, the average length of haul for Company tractors
was 920 miles, 916 miles, and 908 miles, respectively.

     The Company was incorporated in 1983 as a wholly-owned subsidiary of
Arkansas Best Corporation. In December 1988, the stock of the Company was sold
to management, and the Company completed its initial public offering of Common
Stock in late March 1992.

     The Company's principal offices are located at 3200 Industrial Park Road,
Van Buren, Arkansas 72956, and its telephone number is (501) 471-2500.

BUSINESS STRATEGY

     USA Truck's principal competitive strength is its ability and commitment to
consistently provide superior service to shippers. Although price is a primary
concern to all shippers, many of the Company's customers are high-volume
shippers that require a flexible and dependable source of motor carrier service
tailored to specific needs, including pickup or delivery within narrow time
windows. The Company's strategy is to provide a premium service to meet these
needs and to charge compensating rates for such service. This approach has found
increasing acceptance. See "Business -- Competition".

     The Company is committed to prompt freight pickup, consistent on-time
delivery, and twenty-four hours a day, seven days a week dispatching. It has
taken a number of steps to meet these commitments. In particular, the Company
(i) adheres to strict maintenance and cleaning schedules to avoid breakdowns and
delays; (ii) provides detailed routing instructions for, and maintains satellite
communications with, drivers to expedite delivery; (iii) maintains trailer pools
at strategic locations to minimize the time between customer order and pickup;
and (iv) provides extra trailers to high volume shippers for loading and
unloading at their convenience.

     USA Truck utilizes cost-efficient communications throughout its operations.
The Company provides EDI (electronic data interchange) arrangements with several
of its largest customers, providing them with access through their computer
systems to current information on the status of their shipments. Beginning in
the third quarter of 1997, the Company began installing two-way, satellite based
mobile messaging and position-locating equipment in all of its tractors. This
equipment is designed to fulfill customers' heightened need for real time
transit information as well as provide the Company with an enhanced and
cost-effective method of communications between its drivers and its operations
personnel. The system permits fleet managers to contact drivers virtually
anywhere in the

                                        1
<PAGE>   4


Company's market area. These capabilities are intended to shorten response time
to customers, as well as to allow drivers uninterrupted rest time while awaiting
assignment. The installation of the equipment was completed in the fourth
quarter of 1997.

     The Company has designed its own management information software systems,
which it operates on a mainframe computer that the Company acquired in 1997.
This system became operational during the second quarter of 1997, when the
Company's software was migrated to the new computer. Prior to that, the Company
used a mainframe computer through a contractual agreement with a third party.
These data processing capabilities enhance operating efficiency by providing
immediate access to detailed information concerning equipment, cargo, customer
locations, credit history, billing arrangements and specific customer
requirements. They also permit the Company to respond quickly and accurately to
customers' requests and assist in balancing equipment availability throughout
the market area. Management believes these information software systems and
computer hardware will be sufficient to support the Company's expansion plans at
least through 2001 without substantial additional expenditures in the data
processing area.

RECENT EVENTS

     On November 1, 1999, pursuant to an Asset Purchase Agreement (the "Asset
Purchase Agreement") dated October 31, 1999, the Company acquired substantially
all the assets of CARCO Carrier Corporation, an Arkansas corporation, which
operated under the name CCC Express, Inc. ("CCC"), for a purchase price of $35.3
million. The purchase price, which was subject to certain post-closing
adjustments, consisted of (i) a cash payment of approximately $3.0 million; (ii)
the assumption of approximately $6.5 million of liabilities including equipment
notes held by Bank Boston, Mellon U.S. Leasing and Banc of America Leasing &
Capital LLC and (iii) the refinancing with Banc One Leasing Corporation and
Deposit Guaranty National Bank of approximately $25.8 million in other debt
secured by equipment. The cash portion of the purchase price was paid with
available cash and proceeds of borrowings under the Company's credit facilities
with Deposit Guaranty National Bank. The purchase price was equal to the net
book value of CCC on the closing date, as adjusted in accordance with the Asset
Purchase Agreement, plus $2.0 million. In connection with the acquisition, the
Company's borrowing limit under its General Line of Credit with Deposit Guaranty
National Bank was increased from $20.0 million to $35.0 million effective
October 28, 1999.

     The acquired operations include a fleet of 498 tractors and 1,103 dry van
trailers, which the Company will use in its truckload motor carrier business.
The acquisition represents an increase of 43% in the tractor fleet of the
Company, which operated 1,149 tractors and 2,266 dry van trailers before the
transaction. As part of the transaction, the Company also assumed three leases
for dedicated shop and fuel facilities.

MARKETING AND SALES

     The Company focuses its marketing efforts on customers with demanding
requirements and heavy shipping needs within the regions where the Company
operates. This permits the Company to concentrate available equipment in its
primary service area, enabling it to be more responsive to customer needs. USA
Truck's Marketing and Operations Departments have primary responsibility for
developing and implementing the Company's marketing strategy and retaining
customer accounts.

     The Marketing Department solicits and responds to customer orders and
maintains close customer contact regarding service requirements and rates. A
high percentage of the Company's business is from repeat customers. For the year
ended December 31, 1999, at least 93% of USA Truck's operating revenues were
derived from customers that were customers of the Company prior to 1999.

     USA Truck establishes rates through individual negotiations with customers
and through contracts tailored to the specific needs of shippers.

     For the year ended December 31, 1999, the Company's ten largest customers
accounted for 38% of revenues and its three largest customers accounted for 19%
of revenues, with more than 1,600 other customers accounting for the balance. No
customer accounted for more than 10% of revenues.

                                        2
<PAGE>   5

     Customers are generally required to have credit approval before dispatch.
The Company bills customers at or shortly after pickup, and, for the last three
years, receivables collection has averaged approximately 31 days from the
billing date.

OPERATIONS

     The Operations Department consists of two primary divisions: the Load
Coordinator Group and the Fleet Manager Group.

     Load coordinators are responsible for efficiently matching available
equipment with customer needs, and they serve as the contact with customers'
receiving and shipping personnel. Load coordinators also have primary
responsibility for minimizing empty miles, and they work closely with the
Marketing Department to increase equipment utilization.

     The average distance between loads as a percentage of total miles (empty
mile factor) is a standard measurement in the truckload industry. The empty mile
factor generally decreases as average length of haul and density of trucks in an
area increase. The Company's commitment to on-time pickup often requires a
tractor to travel farther to complete a pickup than it would have to travel if
the Company delayed the pickup until a tractor became available in the area. USA
Truck's empty mile factor was 9.26% for the year ended December 31, 1999.

     Fleet managers supervise fleets of approximately 55 drivers each and serve
as the drivers' primary contact with the Company. Fleet managers monitor the
location of equipment and direct its movement in the most efficient and safe
manner practicable.

DRIVERS AND OTHER PERSONNEL

     Driver recruitment and retention continue to be a challenge for the
Company. Recruiting drivers is difficult because Company standards are high and
because of declining enrollment in driving schools. Retention is difficult
because of wage and job fulfillment considerations. Driver turnover, especially
in the early months of employment, is a significant problem, and the competition
for qualified drivers is intense. Although USA Truck has experienced difficulty
with driver turnover, it has been able to attract and retain a sufficient number
of qualified drivers to support its operations. To attract and retain drivers,
the Company must continue to provide safe, attractive and comfortable equipment,
direct access to management, and competitive wages, benefits and financial
incentives designed to encourage longer-term employment.

     Drivers' pay is calculated on the basis of miles driven and increases with
tenure. In 1999, drivers averaged 481 miles per workday. On October 18, 1998,
the Company implemented a pay increase for drivers that resulted in an average
increase in total base compensation of approximately 6% per driver. Drivers are
also paid bonuses based on productivity. For 1999, the Company's drivers earned
bonuses totaling approximately $643,000. During 1999, the Company's drivers
earned wages and bonuses averaging $.31 per mile.

     As of December 31, 1999, USA Truck employed 2,069 persons, of which 1,600
were drivers, none of whom was represented by a collective bargaining unit. In
the opinion of management, the Company's relationship with its employees is
satisfactory.

SAFETY

     USA Truck's safety program is designed to meet the Company's goal of an
accident-free working environment and to enforce governmental safety
regulations. The Company controls the maximum speed of its tractors with
electronic governing equipment, and all its tractors are equipped with anti-lock
braking systems.

     Safety records are one of several hiring criteria used by USA Truck, and
safe equipment handling techniques are an important part of new driver training.
The Company also conducts pre-employment, random and post-accident drug testing
in accordance with Department of Transportation ("DOT") regulations.

                                        3
<PAGE>   6

REVENUE EQUIPMENT AND MAINTENANCE

     The Company's current policy is to replace most tractors within 42 months
from the date of purchase, which permits the Company to maintain substantial
warranty coverage throughout the period of ownership. USA Truck replaces its
tractors and trailers based on various factors, including the used equipment
market, prevailing interest rates, technological improvements, fuel efficiency
and durability. The following table shows the number and age of revenue
equipment operated by the Company at December 31, 1999:

<TABLE>
<CAPTION>

                             TRACTORS                         TRAILERS
                      -------------------------        -----------------------
                                       AVERAGE                       AVERAGE
MODEL                                  MONTHS                         MONTHS
YEAR                 NUMBER          IN SERVICE        NUMBER       IN SERVICE
- ----                 ------          ----------        ------       ----------
<S>                   <C>            <C>               <C>          <C>
2000                   353                4              350             3
1999                   324               14              286             9
1998                   569               26              797            24
1997                   329               37              302            37
1996                   138               48              332            49
1995                    --               --              624            59
1994                    --               --              372            70
1993                    --               --              191            82
1992 and prior          --               --              270           126
                     -----               --            -----           ---
Total                1,713               23            3,524            46
                     =====               ==            =====           ===
</TABLE>

     At December 31, 1999, USA Truck operated 1,713 conventional sleeper
tractors and 3,524 van trailers. To simplify driver and mechanic training,
control the cost of spare parts and tire inventory and provide for a more
efficient vehicle maintenance program, the Company buys tractors and trailers
manufactured to its specifications. In deciding which equipment to buy, it
considers a number of factors, including safety, economy, resale value and
driver comfort. Most of the Company's tractors are equipped with Detroit Diesel
Series 60 12.7-liter engines, air-ride suspension, and anti-lock brakes. The
Company's equipment is maintained through a strict preventive maintenance
program designed to minimize equipment downtime and to enhance trade-in value.

     Beginning with the November 1995 trailer purchases, the Company began
converting its trailer fleet from 48-foot long and 102 inches wide trailers to
53-foot long and 102 inches wide trailers. Because of this conversion process
and additional trailers required to serve Mexico, the Company's trailer to
tractor ratio was 2.1-to-1 at December 31, 1999. Management believes that a
2.1-to-1 ratio is ideal for the Company's operations, in that it promotes
efficiency and provides the flexibility needed to serve customer needs. As of
December 31, 1999, 2,475 of the 3,524 trailers in the Company's trailer fleet
were 53-foot models. All future purchases of trailers will be 53-foot models.
The Company is undertaking this conversion in order to meet its customers'
requirements and to continue to provide an efficient balance between trailer
capacity and weight and length limitations in the various states and Canada.

     During 1999, the Company financed revenue equipment through its
collateralized, $40 million revolving credit agreement (the "General Line of
Credit" or "Line of Credit"), through conventional financing and lease-purchase
arrangements. See "Item 7. Management's Discussion and Analysis of Financial
Condition and Results of Operations--Liquidity and Capital Resources". All of
its revenue equipment is pledged to secure its obligations under such financing
arrangements.

                                        4
<PAGE>   7


REVENUE EQUIPMENT ACQUISITION PROGRAM

     During 2000 and 2001, the Company plans to acquire 641 and 695 new tractors
and 650 and 825 new trailers, respectively. This will result in net increases of
66 and 267 tractors and 111 and 546 trailers, respectively. As of February 4,
2000, contracts had been executed for the acquisition of all 641 tractors and
650 trailers to be acquired in 2000. Although these contracts fix the price at
which the Company may acquire this equipment, the Company has the right in its
discretion to decrease or increase the number of tractors or trailers to be
purchased during the year at agreed prices. See "Item 7. Management's Discussion
and Analysis of Financial Condition and Results of Operations--Liquidity and
Capital Resources."

     During 1999, the Company acquired 381 new tractors (a net increase of 83)
and 600 new trailers (a net increase of 417). The Company purchased 68 fewer new
tractors in 1999 than anticipated in response to the shortage of qualified
drivers in the truckload industry. The process of converting to 53-foot
trailers, growth in dedicated service and freight into Mexico, which
traditionally requires more trailers that regular dry-van service, necessitated
increasing the trailer fleet by 114 units above the amount anticipated. The CCC
Express acquisition added an additional 498 tractors and 1,103 trailers to the
fleet.

INSURANCE

     The primary risk areas in the motor carrier industry are cargo loss and
damage, personal injury, property damage and workers' compensation claims.
Management believes that its insurance coverages are sufficient in each of these
areas. The Company is qualified as a workers' compensation self-insurer in the
States of Arkansas and Louisiana. The workers' compensation self-insurance is
secured by $300,000 in certificates of deposit. In June 1993, the Company
received authority to self-insure for cargo loss and damage claims and up to
$1.0 million per occurrence for bodily injury and property damage ("BIPD")
claims. These self-insurance arrangements are secured by $1.01 million in
letters of credit with the Federal Highway Administration. During 1999, the
self-insurance retention levels were $1.0 million for BIPD and $500,000 for
workers' compensation claims per occurrence. The Company has insurance coverage
for cargo loss and damage claims exceeding $100,000 per occurrence and coverage
for physical damage to its tractors and trailers with a self-insurance level of
$10,000 per occurrence. The Company has excess general liability coverage in
amounts substantially exceeding minimum legal requirements and believed to be
sufficient to protect the Company against material loss.

FUEL AVAILABILITY AND COST

     The motor carrier industry is dependent upon the availability of diesel
fuel, and fuel shortages or increases in fuel taxes or fuel costs have adversely
affected and may in the future adversely affect the profitability of USA Truck.
Fuel prices have fluctuated widely and fuel taxes have generally increased in
recent years. The Company has not experienced difficulty in maintaining
necessary fuel supplies, and in the past the Company generally has been able to
recover all but the most significant increases in fuel costs and fuel taxes from
customers through increased freight rates. Diesel prices increased during 1999,
and there can be no assurance that diesel prices will decrease to price levels
experienced in recent periods. There also can be no assurance that the Company
will be able to recover any future increases in fuel costs and fuel taxes
through increased rates.

COMPETITION

     The trucking industry is highly competitive. It is characterized by ease of
entry and by many small carriers having revenues of less than $1 million per
year, with relatively few carriers being able to achieve revenues exceeding $100
million per year. The principal means of competition in the truckload segment of
the industry are service and price, with rate discounting being particularly
intense during economic downturns. Although the Company competes primarily on
the basis of service rather than rates, rate discounting continues to be a
factor in obtaining and retaining business. Although the number of firms
competing in the truckload segment has increased dramatically since industry
deregulation in 1980, the industry appears to be undergoing a consolidation
phase. Furthermore, a depressed economy tends to increase both price and service
competition from alternative modes such as less-than-truckload carriers and
railroads. Management believes that further growth in the truckload segment of
the industry is likely to be achieved by acquiring greater market share rather
than through an increase in the size of the market.

                                        5
<PAGE>   8

     USA Truck competes primarily with other truckload carriers and
shipper-owned fleets and, to a lesser extent, with railroads and
less-than-truckload carriers. A number of truckload carriers have much greater
financial resources, own more revenue equipment and carry a larger volume of
freight than does the Company.

     The Company also competes with truckload and less-than-truckload carriers
for qualified drivers. See "Business -- Drivers and Other Personnel".

TRADEMARK

     The Company's name and logo are registered with the United States Patent
and Trademark Office, the Canadian Trade Marks Office, and the Mexican
Industrial Property Institute. The Company believes its trademark has
significant value and is important to its marketing efforts. The trademark
registration in each country is renewable indefinitely at the option of the
Company.

REGULATION

     USA Truck is a motor carrier regulated by the DOT and other federal and
state agencies. The Company's business activities in the United States are
subject to broad federal, state and local laws and regulations beyond those
applicable to most business activities. These regulated business activities
include, among other things, service area, routes traveled, equipment
specifications, commodities transported, rates and charges, accounting systems,
financial reporting and insurance coverages. The Company's Canadian business
activities are subject to similar requirements imposed by the laws and
regulations of the Dominion of Canada and provincial laws and regulations.

     Motor carrier operations are subject to safety requirements prescribed by
the DOT, governing interstate operation, and by Canadian provincial authorities.
Matters such as weight and equipment dimensions are also subject to federal,
state, and provincial regulations.

     The Company is subject to federal, state, provincial, and local
environmental laws and regulations. Management believes that the Company is in
substantial compliance with such laws and regulations and that costs of such
compliance will not have a material adverse effect on its competitive position,
operations or financial condition or require a material increase in currently
anticipated capital expenditures.

ITEM 2. PROPERTIES

     The Company owns its headquarters in Van Buren, Arkansas, located on 63
acres. This site has approximately 84,000-square feet of office, training, and
driver housing space within two structures, a 12,000-square foot maintenance
facility and a 2,500-square foot dock. In the second quarter of 1997, the
Company completed construction of a new 57,000-square foot corporate
headquarters next to its existing headquarters facility in Van Buren, Arkansas.
The previously existing 27,000-square foot facility will be refurbished over the
next several years to house additional training, maintenance and support
services. This facility also contains aboveground fuel tanks with a capacity of
40,000 gallons.

     The Company operates a maintenance and driver facility in West Memphis,
Arkansas, situated on roughly 32 acres with 13 acres of paved tractor and
trailer parking behind fence, a 17,200-square foot shop, an eight-lane drive
through fueling station containing above ground fuel tanks with a capacity of
37,000 gallons and drivers' sleeping quarters that can house 36 drivers. During
1998, the Company expanded the shop by 7,200 square feet and added four
additional lanes to its drive through fueling station. The drivers' quarters
also include a recruiting office and driver training center for new drivers. The
Company owns 29 of the 32 acres and leases the remainder under a long-term lease
agreement with an initial term ending in November 2044. Located at the
intersection of I-40 and I-55, this facility is an ideal location for these
activities.

     In August 1995, the Company completed construction of and began operating
its maintenance and driver facility in Shreveport, Louisiana, with 15 acres of
paved tractor and trailer parking behind fence, a 12,000-square foot shop, a
two-lane drive through fueling station containing above ground fuel tanks with a
capacity of 37,000 gallons and a drivers' sleeping quarters that can house 32
drivers. The drivers' quarters also include a recruiting office and driver
training center for new drivers. The facility is located on 20 acres of land
owned by the Company near I-20 on US Hwy. 80 and is strategically located near
several major customers in the area.

                                       6
<PAGE>   9

     In June 1996, the Company began operating its maintenance and driver
facility in Vandalia, Ohio, with approximately five acres of paved tractor and
trailer parking behind fence, a 2,400-square foot shop, a one-lane drive through
fueling station containing a below ground fuel tank with a capacity of 10,000
gallons and a drivers' sleeping quarters that can house 22 drivers. During 1999
the company acquired approximately 3 acres of adjoining land and plans to use
this space for truck and trailer parking as soon as it can be prepared. The
drivers' quarters also include a sales and recruiting office. The Company owned
facility is located near I-75 & I-70 and is strategically located for these
activities.

     The Company leases, on a month-to-month basis, parking and office
facilities in East Peoria and Blue Island, Illinois, New Paris, Indiana and
Fayetteville, North Carolina.

     Management believes that its facilities will be sufficient for its
operations at least through 2000.

     See "Item 1. Business -- Revenue Equipment and Maintenance" and "Item 1.
Business -- Revenue Equipment Acquisition Program" for information regarding the
Company's revenue equipment.

ITEM 3. LEGAL PROCEEDINGS

     The Company is a party to routine litigation incidental to its business,
primarily involving claims for personal injury and property damage incurred in
the transportation of freight. It maintains insurance covering liabilities
resulting from personal injury and property damage claims. Management believes
that adverse results in one or more of these cases would not have a material
adverse effect on the financial position of the Company.


ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

     The Company did not submit any matter to a vote of security holders during
the fourth quarter of the fiscal year covered by this Annual Report.


                                       7
<PAGE>   10



                                     PART II


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

     The Company's Common Stock trades on The Nasdaq Stock Market under the
symbol: USAK. The following table sets forth the high and low closing sales
prices for the Company's Common Stock as reported by The Nasdaq Stock Market for
1999 and 1998.


<TABLE>
<CAPTION>
1999                                                                HIGH       LOW
- ----                                                                ----       ----
<S>                                                                <C>       <C>
First Quarter..............................................        $ 10.44   $ 10.19
Second Quarter.............................................        $  9.38   $  9.16
Third Quarter..............................................        $  9.25   $  8.88
Fourth Quarter.............................................        $  8.13   $  7.75

1998                                                                HIGH       LOW
- ----                                                                ----       ----
First Quarter .............................................        $ 16.13   $ 10.88
Second Quarter.............................................        $ 16.94   $ 14.25
Third Quarter..............................................        $ 17.00   $ 10.25
Fourth Quarter.............................................        $ 12.38   $  9.50
</TABLE>

     As of March 8, 2000, there were 264 holders of record (including brokerage
firms and other nominees) of the Company's Common Stock. The Company estimates
that there were approximately 1,888 beneficial owners of the Common Stock as of
that date.

     The Company has never paid a cash dividend on its Common Stock. It is the
current intention of the Company's Board of Directors to continue to retain
earnings to finance the growth of the Company rather than to pay cash dividends.
Any future payments of cash dividends will depend upon the financial condition,
results of operations and capital commitments of the Company as well as other
factors deemed relevant by the Board of Directors. Covenants contained in the
Company's General Line of Credit may limit the Company's ability to pay
dividends.


                                       8
<PAGE>   11



ITEM 6. SELECTED FINANCIAL DATA

     The following table sets forth, for the periods and at the dates indicated,
selected financial data of the Company. The data should be read in conjunction
with the financial statements and related notes contained in Item 8 of this
Annual Report and "Item 7. Management's Discussion and Analysis of Financial
Condition and Results of Operations".

<TABLE>
<CAPTION>

                                                                                 YEAR ENDED DECEMBER 31
                                                     -------------------------------------------------------------------------
                                                       1999             1998           1997            1996            1995
                                                     ---------       ---------       ---------       ---------       ---------
                                                                     (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
STATEMENT OF OPERATIONS DATA:
<S>                                                  <C>             <C>             <C>             <C>             <C>
  Operating revenues ..........................      $ 166,363       $ 145,216       $ 129,507       $ 108,313       $ 102,400
  Operating expenses and costs:
     Salaries, wages and employee benefits ....         70,198          61,297          53,122          45,122          42,860
     Operations and maintenance ...............         42,480          33,401          34,189          31,064          26,909
     Operating taxes and licenses .............          3,005           2,547           2,160           1,964           1,822
     Insurance and claims .....................          7,987           7,250           6,773           6,422           5,146
     Communications and utilities .............          2,000           1,469           1,828           1,612           1,285
     Depreciation and amortization ............         18,592          16,179          13,608          11,839          11,145
     Other ....................................          6,265           4,113           3,659           4,038           2,794
                                                     ---------       ---------       ---------       ---------       ---------
                                                       150,527         126,256         115,339         102,061          91,961
                                                     ---------       ---------       ---------       ---------       ---------
  Operating income ............................         15,836          18,960          14,168           6,252          10,439
  Other (income) expenses:
     Interest expense .........................          1,655           1,715           1,380             730             799
     Gain on disposal of assets ...............             (9)            (37)             (2)             (9)             (1)
     Other, net ...............................            (23)            102            (191)             (4)           (152)
                                                     ---------       ---------       ---------       ---------       ---------
                                                         1,623           1,780           1,187             717             646
                                                     ---------       ---------       ---------       ---------       ---------
  Income before income taxes ..................         14,213          17,180          12,981           5,535           9,793

  Income taxes ................................          5,571           6,683           5,078           2,153           3,756
                                                     ---------       ---------       ---------       ---------       ---------
  Net Income ..................................          8,642       $  10,497       $   7,903       $   3,382       $   6,037
                                                     =========       =========       =========       =========       =========

  Basic:
     Net income per share .....................      $     .93       $    1.12       $    0.84       $    0.36       $    0.62
                                                     =========       =========       =========       =========       =========
     Average shares outstanding ...............          9,324           9,400           9,356           9,463           9,684
                                                     =========       =========       =========       =========       =========
  Diluted:
     Net income per share .....................      $     .92       $    1.11       $    0.83       $    0.35       $    0.60
                                                     =========       =========       =========       =========       =========
     Average shares outstanding ...............          9,354           9,466           9,485           9,620          10,028
                                                     =========       =========       =========       =========       =========
  Cash dividends per share ....................             --              --              --              --              --
BALANCE SHEET DATA (AT END OF YEAR):
  Current assets ..............................      $  39,449       $  20,459       $  20,292       $  16,825       $  16,008
  Current liabilities .........................         28,277          21,151          20,762          15,193          13,295
  Total assets ................................        182,040         119,611         113,518          86,330          78,980
  Long-term debt, less current maturities .....         64,453          19,058          27,057          15,867          13,361
  Stockholders' equity ........................         70,108          62,734          52,373          44,424          43,157
</TABLE>

                                       9
<PAGE>   12



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

The following table sets forth the percentage relationship of certain items to
operating revenues for the years indicated:

<TABLE>
<CAPTION>
                                                      YEAR ENDED DECEMBER 31,
                                                   -----------------------------
                                                    1999       1998        1997
                                                   -----       -----       -----
<S>                                                <C>         <C>         <C>
Operating revenues ..........................      100.0%      100.0%      100.0%
Operating expenses and costs:
    Salaries, wages and employee benefits ...       42.2        42.2        41.0
    Operations and maintenance ..............       25.5        23.0        26.4
    Operating taxes and licenses ............        1.8         1.8         1.7
    Insurance and claims ....................        4.8         5.0         5.2
    Communications and utilities ............        1.2         1.0         1.4
    Depreciation and amortization ...........       11.2        11.1        10.5
    Other ...................................        3.8         2.8         2.9
                                                   -----       -----       -----
                                                    90.5        86.9        89.1
                                                   -----       -----       -----
Operating income ............................        9.5        13.1        10.9
Other (income) expenses:
    Interest expense ........................        1.0         1.2         1.1
    Gain on disposal of assets ..............         --          --          --
    Other, net ..............................         --         0.1        (0.2)
                                                   -----       -----       -----
                                                     1.0         1.3         0.9
                                                   -----       -----       -----
Income before income taxes ..................        8.5        11.8        10.0
Income taxes ................................        3.3         4.6         3.9
                                                   -----       -----       -----
Net income ..................................        5.2%        7.2%        6.1%
                                                   =====       =====       =====
</TABLE>

RESULTS OF OPERATIONS

Year Ended December 31, 1999 Compared to Year Ended December 31, 1998

     Operating revenues increased 14.6% to $166.4 million in 1999 from $145.2
million in 1998, resulting from increased business with existing customers,
additional business from new customers and the acquisition of CCC Express on
November 1, 1999. Average revenue per mile increased to $1.13 in 1999 from $1.12
in 1998. The empty mile factor decreased to 9.26% of paid miles in 1999 from
9.78% of paid miles in 1998. There was a 15.1% increase in the number of
shipments to 147,484 in 1999 from 128,179 in 1998. This volume improvement was
made possible by an increase of 15.6% in the average number of tractors operated
from 1,058 in 1998 to 1,223 in 1999. The net effect of the volume improvement
and the Company's continuing fleet expansion was a decrease of 1.5% in miles per
tractor per week from 2,441 in 1998 to 2,404 in 1999.

     Operating expenses and costs as a percentage of revenues rose to 90.5% in
1999 from 86.9% in 1998. This change resulted primarily from an increase, on a
percent of revenue basis, in operations and maintenance cost, communications and
utilities, and other expenses. These increases were partially offset by a
decrease, on a percent of revenue basis, in insurance and claims. The percentage
increase, relative to revenues, in operations and maintenance cost was primarily
the result of a an increase of 10 cents per gallon in the average cost of fuel
in 1999 compared to 1998, offset by an increase in fuel efficiency to 6.46
average miles per gallon in 1999 from 6.41 in 1998. The increase in
communications and utilities expense, as a percentage of revenue and in actual
dollars, reflects the usage credits issued with the purchase of Qualcomm units
in 1997 being used to reduce rates in 1998. The increase in other expenses, as a
percentage of revenue, resulted primarily from higher recruiting costs brought
about by a higher driver turnover rate and increased competition for drivers.
The percentage decrease, relative to revenues, in insurance and claims expense
was due to a decrease in the number and severity of accidents in 1999 compared
to 1998.

     As a result of the foregoing factors, operating income decreased 16.5% to
$15.8 million, or 9.5% of revenue, in 1999 from $19.0 million or, 13.1% of
revenues, in 1998.

                                       10
<PAGE>   13

     Interest expense decreased 3.5% to $1.65 million from $1.72 million in
1998, resulting primarily from reduction in borrowings for most of the year
offset by a substantial increase in borrowings following the acquisition of CCC
Express on November 1, 1999.

     The Company had other income, net of $23,000 during 1999 compared to other
expense, net of $102,000 in 1998. This increase in other income, net was due to
a variety of factors, no single one of which accounted for more than half of the
increase.

     As a result of the above factors, income before taxes decreased 17.3% to
$14.2 million, or 8.5% of revenues, in 1999 from $17.2 million, or 11.8% of
revenues, in 1998.

     The Company's effective tax rate increased to 39.2% in 1999 from 38.9% in
1998. The effective rates varied from the statutory Federal tax rate of 34%
primarily due to state income taxes and certain non-deductible expenses.

     As a result of the aforementioned factors, net income decreased 17.7% to
$8.6 million, or 5.2% of revenues, in 1999 from $10.5 million, or 7.2% of
revenues in 1998, representing a decrease of 17.1% in diluted net income per
share to $.92 from $1.11. The number of shares used in the calculation of
diluted net income per share for 1999 and 1998 were 9,354,441 and 9,465,971.

Year Ended December 31, 1998 Compared to Year Ended December 31, 1997

     Operating revenues increased 12.1% to $145.2 million in 1998 from $129.5
million in 1997, resulting from increased business with existing customers and
additional business from new customers. Average revenue per mile increased to
$1.12 in 1998 from $1.11 in 1997. The empty mile factor decreased to 9.78% in
1998 from 10.05% of paid miles in 1997. There was a 12.4% increase in the number
of shipments to 128,179 in 1998 from 114,022 in 1997. This volume improvement
was made possible by an increase of 13.2% in the average number of tractors
operated from 935 in 1997 to 1,058 in 1998. The net effect of the volume
improvement and the Company's continuing fleet expansion was a decrease of 1.4%
in miles per tractor per week from 2,475 in 1997 to 2,441 in 1998.

     Operating expenses and costs as a percentage of revenues improved to 86.9%
in 1998 from 89.1% in 1997. This change resulted primarily from a decrease, on a
percentage of revenue basis, in operations and maintenance costs, in insurance
and claims expense and in communications and utilities expense. These decreases
were partially offset by increases, on a percentage of revenue basis, in
salaries, wages, and employee benefits and in depreciation and amortization
expense. The percentage decrease, relative to revenues, in operations and
maintenance costs was primarily the result of a decrease of 16 cents per gallon
in the average cost of fuel in 1998 compared to 1997, and by an increase in fuel
efficiency to 6.41 average miles per gallon in 1998 from 6.29 in 1997. The
percentage decrease, relative to revenues, in insurance and claims expense was
due to a decrease in the number and severity of accidents in 1998 as compared to
1997. The decrease in communications and utilities expense, as a percentage of
revenue and in actual dollars, reflects the installation in December 1997 of the
Company's two-way, satellite-based mobile messaging and position-locating
equipment in all of its tractors. This equipment has greatly reduced the
Company's telephone expenses and increased the efficiency of communications with
drivers. In addition, these devices have enabled the Company to eliminate the
cost associated with the global paging system the Company was previously
utilizing in its operations. The increase in salaries, wages, and employee
benefits was due to an increase in aggregate driver pay, an increase in driver
total base compensation of approximately 6% per driver in October 1998, along
with an increase in incentives earned by employees due to improved operating and
financial performance of the Company in 1998 compared to 1997. The increase in
depreciation and amortization expense reflects the effects of timing differences
between trade-in cycles and purchasing schedules along with an increase in the
cost of tractors and trailers when compared to those being retired.

     As a result of the foregoing factors, operating income increased 33.8% to
$19.0 million, or 13.1% of revenues, in 1998 from $14.2 million, or 10.9% of
revenues, in 1997.



                                       11
<PAGE>   14

     Interest expense increased 24.3% to $1.7 million in 1998 from $1.4 million
in 1997, resulting primarily from an increase in borrowings to facilitate
equipment purchases, partially offset by a decrease in interest rates, in the
aggregate, on both short-term and long-term debt.

     The Company had other income, net, of $191,000 in 1997, compared to other
expense, net, of $102,000 in 1998. This increase in other expense, net was due
to a variety of factors, no single one of which accounted for more than half of
the increase.

     As a result of the above, income before income taxes increased 32.3% to
$17.2 million, or 11.8% of revenues, in 1998 from $13.0 million, or 10.0% of
revenues, in 1997.

     The Company's effective tax rate decreased to 38.9% in 1998 from 39.1% in
1997. The effective rates varied from the statutory Federal tax rate of 34%
primarily due to state income taxes and certain non-deductible expenses.

     As a result of the aforementioned factors, net income increased 32.8% to
$10.5 million, or 7.2% of revenues, in 1998 from $7.9 million, or 6.1% of
revenues, in 1997, an increase of 33.8% in diluted net income per share to $1.11
from $.83. The number of shares used in the calculation of diluted net income
per share for 1998 and 1997 were 9,465,971 and 9,484,570, respectively.

INFLATION

     The effect of inflation on operating costs has been minimal in recent
years. Most of the Company's operating expenses are inflation sensitive, with
increases in inflation generally resulting in increased operating costs and
expenses. The effect of inflation-driven cost increases on the Company's overall
operating costs would not be expected to be greater for the Company than for its
competitors.

SEASONALITY

     In the trucking industry generally, revenues decrease as customers reduce
shipments during the winter holiday season and as inclement weather impedes
operations. At the same time, operating expenses increase, due primarily to
decreased fuel efficiency and increased maintenance costs. Future revenues could
be impacted if customers reduce shipments due to temporary plant closings, which
historically have occurred during July and December.

FUEL AVAILABILITY AND COST

     The motor carrier industry is dependent upon the availability of diesel
fuel, and fuel shortages or increases in fuel taxes or fuel costs have adversely
affected, and may in the future adversely affect the profitability of USA Truck.
Fuel prices have fluctuated widely and fuel taxes have generally increased in
recent years. The Company has not experienced difficulty in maintaining
necessary fuel supplies, and in the past the Company generally has been able to
recover all but the most significant increases in fuel costs and fuel taxes from
customers through increased freight rates. Diesel prices increased during 1999
and there can be no assurance when diesel prices will decrease to price levels
experienced in recent periods. There also can be no assurance that the Company
will be able to recover any future increases in fuel costs and fuel taxes
through increased rates.

OPERATIONAL DATA

     The following table sets forth certain operational information for the last
three fiscal years:

<TABLE>
<CAPTION>
                                                                              YEAR ENDED DECEMBER 31,
                                                                  ---------------------------------------------
                                                                     1999             1998              1997
                                                                  -----------      -----------      -----------
<S>                                                               <C>              <C>              <C>
Total loads moved during the year ..........................          147,484          128,179          114,022
Average number of tractors operated during the year ........            1,223            1,058              935
Number of tractors operated at year end ....................            1,713            1,132            1,007
Number of trailers operated at year end ....................            3,524            2,004            1,928
Total tractor miles during the year ........................      169,587,327      148,590,937      133,941,037
</TABLE>


                                       12
<PAGE>   15

LIQUIDITY AND CAPITAL RESOURCES

     The continued growth of the Company's business has required significant
investments in new revenue equipment. USA Truck has financed revenue equipment
purchases with cash flows from operations and through borrowings, including
borrowings under the General Line of Credit and capitalized lease obligations.
Working capital needs have generally been met with cash flows from operations
and occasionally through borrowings under the General Line of Credit. Although
the Company historically has not relied significantly on the General Line of
Credit to meet working capital requirements, it does experience cyclical cash
flow needs common to the industry. The Company uses the General Line of Credit
to minimize these fluctuations and to provide flexibility in financing revenue
equipment. Cash flows from operations were $13.6 million for 1999 and $28.5
million for 1998.

     The Company's General Line of Credit provides for available borrowings of
up to $40.0 million, including letters of credit not exceeding $5.0 million. The
Company increased the maximum borrowing limit from $20.0 million to the current
level based upon its evaluation of the Company's borrowing requirements. As of
December 31, 1999, approximately $1.0 million was available under the General
Line of Credit. The General Line of Credit matures on April 30, 2001, prior to
which time, subject to certain conditions, the amount outstanding can be
converted at any time, at the Company's option, to a four-year term loan
requiring 48 equal monthly principal payments plus interest. The interest rate
on the General Line of Credit fluctuates between the lender's prime rate, or
prime plus 1/2% or LIBOR plus a certain percentage which is determined based on
the Company's attainment of certain financial ratios. The effective interest
rate on the Company's borrowings under the General Line of Credit for the year
ending December 31, 1999 was 6.48%. The principal maturity can be accelerated if
the borrowing base does not support the principal balance outstanding. The
General Line of Credit is collateralized by accounts receivable and all
otherwise unencumbered equipment. The Company has the option under certain
conditions and at certain rates to fix the rate and term on portions of the
outstanding balance of the General Line of Credit. See Note 4 to the Financial
Statements.

     The Company is a party to a lease commitment agreement (the "Equipment TRAC
Lease Commitment"), dated November 19, 1997, to facilitate the leasing of
tractors. The Equipment TRAC Lease Commitment was amended on October 12, 1999 to
provide for available borrowings of up to $6,000,000 available during the
remainder of 1999 and until October 12, 2000. Each capital lease under this
lease commitment has a repayment period of either 36 or 42 months. As of
December 31, 1999, capital leases in the aggregate principal amount of $21.7
million were outstanding under the Equipment TRAC Lease Commitment with an
average interest rate of 5.66% per annum.

     As of December 31, 1999, capital leases in the aggregate principal amount
of $9.3 million were outstanding under a prior lease commitment with an average
interest rate of 5.25% per annum.

     The Company's long-term debt, excluding current debt, increased by 238.2%
to $64.4 million at December 31, 1999 from $19.1 million at December 31, 1998.
This increase resulted from increased borrowings under the Equipment TRAC Lease
Commitment for revenue equipment purchases and the acquisition of CCC Express,
Inc., partially offset by the retirement of $14.8 million in debt. The retired
debt had an average interest rate of approximately 6.6% and was repaid with cash
flow from operations.

     During the years 2000 and 2001, the Company plans to make approximately
$134 million in capital expenditures. At December 31, 1999, USA Truck was
committed to spend $63.7 million of this amount for revenue equipment in 2000,
and $64.2 million of this amount is currently budgeted for revenue equipment in
2001. The commitments to purchase revenue equipment are cancelable by the
Company if certain conditions are met. The balance of the expected capital
expenditures will be used for maintenance and office equipment and facility
improvements.

     The General Line of Credit, the Equipment TRAC Lease Commitment, equipment
leases and cash flows from operations should be adequate to fund the Company's
operations and expansion plans through the end of 2000. There can be no
assurance, however, that such sources will be sufficient to fund Company
operations and all expansion plans through such date, or that any necessary
additional financing will be available, if at all, in

                                       13

<PAGE>   16

amounts required or on terms satisfactory to the Company. The Company expects to
continue to fund its operations with cash flows from operations, equipment
leases, the General Line of Credit, and the Equipment TRAC Lease Commitment for
the foreseeable future.

     On July 9, 1998, the Company's Board of Directors authorized the Company to
purchase up to 500,000 shares of its outstanding common stock over a three-year
period dependent upon market conditions. Common stock purchases under the
authorization may be made from time to time on the open market or in privately
negotiated transactions at prices determined by the Chairman of the Board or
President of the Company. This new authorization became effective in September
1998 upon the expiration of the Company's existing stock repurchase program. As
of December 31, 1999, the Company had purchased 231,600 shares pursuant to this
new authorization at an aggregate purchase price of $2,125,000. On May 5, 1999,
the Board of Directors authorized the retirement of 100,000 shares of treasury
stock that had been purchased at an aggregate cost of $.9 million. In addition,
as of December 31, 1999, 9,589 of the remaining 131,600 repurchased shares had
been resold under the Company's Employee Stock Purchase Plan. The Company may
continue to purchase shares in the future if, in the view of management, the
common stock is undervalued relative to the Company's performance and prospects
for continued growth. Any such purchases would be funded with cash flows from
operations or the General Line of Credit.

YEAR 2000 ISSUES

     The Year 2000 issue is the result of computer programs being written using
two digits rather than four to define the applicable year. Potentially, the Year
2000 issue could have resulted, at the Company and at its vendors and customers,
in system failures or miscalculations causing disruptions of operations,
including, among other things, a temporary inability to process transactions or
to engage in other normal business activities. Beginning in 1997, the Company
undertook various initiatives intended to ensure that its computer equipment and
software would function properly in the Year 2000 and thereafter.

     As of February 24, 2000, the Company has not experienced any material
adverse effects related to the Year 2000 issue, and none of its key vendors have
reported to the Company any material adverse effects related to the issue. At
this time, the Company does not expect to encounter any Year 2000 issues that
would have a material effect on its results of operations, liquidity and
financial condition. Furthermore, the Company does not anticipate any
significant expenditure in the future related to year 2000 compliance. However,
latent Year 2000 problems may surface at key dates or events in the future.

NEW ACCOUNTING PRONOUNCEMENTS

     In 1998, the American Institute of Certified Public Accountants issued
Statement of Position 98-1, Accounting for the Costs of Computer Software
Developed or Obtained for Internal Use. This statement provides guidance on the
capitalization of certain costs incurred in developing or acquiring internal-use
computer software. This statement was adopted in 1998 and did not have a
significant impact on the Company's financial statements.

FORWARD-LOOKING STATEMENTS

     This report contains forward-looking statements and information that are
based on management's belief as well as assumptions made by, and information
currently available to management. Although the Company believes that the
expectations reflected in such forward-looking statements are reasonable, it can
give no assurance that such expectations will be realized. Should one or more of
the risks or uncertainties underlying such expectations materialize, or should
underlying assumptions prove incorrect, actual results may vary materially from
those expected. Among the key factors that are not within the Company's control
and that may have a direct bearing on operating results are increases in diesel
prices, adverse weather conditions or driver turnover and the impact of
increased rate competition or competition for qualified drivers. The Company's
results may also be significantly affected by fluctuations in general economic
conditions, as the Company's utilization rates are directly related to business
levels of shippers in a variety of industries. Results for any specific period
could also be affected by various unforeseen events, such as unusual levels of
equipment failure or accident claims.

                                       14
<PAGE>   17



ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

     The Company's General Line of Credit agreement provides for borrowings
which bear interest at variable rates based on either a prime rate or the LIBOR.
At December 31, 1999, the Company had $39.0 million outstanding pursuant to the
General Line of Credit. The Company believes that the effect, if any, of
reasonably possible near-term changes in interest rates on the Company's
financial position, results of operations, and cash flows should not be
material.

     All customers are required to pay for Company services in U.S. dollars.
Although the Canadian Government makes certain payments, such as tax refunds, to
the Company in Canadian dollars, any foreign currency exchange risk associated
with such payments is insignificant.

     The Company does not engage in hedging transactions relating to diesel fuel
or any other commodity.


                                       15
<PAGE>   18



ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

                                 USA TRUCK, INC.

                           ANNUAL REPORT ON FORM 10-K

                          YEAR ENDED DECEMBER 31, 1999

                          INDEX TO FINANCIAL STATEMENTS


<TABLE>
<CAPTION>
                                                                                                            Page

<S>                                                                                                          <C>
Report of Independent Auditors .........................................................................     17

Balance Sheets as of December 31, 1999 and 1998.........................................................     18

Statements of Income for the years ended December 31, 1999, 1998 and 1997...............................     19

Statements of Stockholders' Equity for the years ended December 31, 1999, 1998 and 1997.................     20

Statements of Cash Flows for the years ended December 31, 1999, 1998 and 1997...........................     21

Notes to Financial Statements...........................................................................     22
</TABLE>

                                       16
<PAGE>   19

                REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


The Board of Directors and Stockholders
USA Truck, Inc.

We have audited the accompanying balance sheets of USA Truck, Inc. as of
December 31, 1999 and 1998, and the related statements of income, stockholders'
equity, and cash flows for each of the three years in the period ended December
31, 1999. Our audits also included the financial statement schedule listed in
the Index at Item 14(a). These financial statements and schedule are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements and schedule based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States. 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 position of USA Truck, Inc. at December 31,
1999 and 1998, and the results of its operations and its cash flows for each of
the three years in the period ended December 31, 1999, in conformity with
accounting principles generally accepted in the United States. Also, in our
opinion, the related financial statement schedule, when considered in relation
to the basic financial statements taken as a whole, present fairly in all
material respects the information set forth therein.


                                             ERNST & YOUNG  LLP




Little Rock, Arkansas
January 18, 2000

                                       17
<PAGE>   20


                                 USA TRUCK, INC.


                                 BALANCE SHEETS


<TABLE>
<CAPTION>

                                                                                             December 31,
                                                                                 ---------------------------------
                                                                                     1999                1998
                                                                                 -------------       -------------
<S>                                                                              <C>                 <C>
ASSETS
Current assets:
    Cash and cash equivalents .............................................      $   2,145,707       $   1,779,643
    Receivables (Note 5):
      Trade, less allowance for doubtful accounts of
        $269,150 in 1999 and $140,670 in 1998 .............................         26,649,235          13,928,848
      Other ...............................................................          5,509,866             299,914
    Inventories ...........................................................            301,907             236,338
    Deferred income taxes (Note 7) ........................................          1,208,413           1,573,365
    Prepaid expenses and other current assets (Note 3) ....................          3,634,056           2,640,561
                                                                                 -------------       -------------
Total current assets ......................................................         39,449,184          20,458,669

Property and equipment (Notes 5 and 6):
    Land and structures ...................................................         16,798,699          14,637,631
    Revenue equipment .....................................................        155,546,718         107,323,786
    Service, office and other equipment ...................................         13,665,713          10,947,496
                                                                                 -------------       -------------
                                                                                   186,011,130         132,908,913
    Accumulated depreciation and amortization .............................        (43,873,074)        (36,769,320)
                                                                                 -------------       -------------
                                                                                   142,138,056          96,139,593
Security deposits .........................................................                 --           1,745,478
Other assets ..............................................................            452,448           1,267,479
                                                                                 -------------       -------------
Total assets ..............................................................      $ 182,039,688       $ 119,611,219
                                                                                 =============       =============

LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
    Bank drafts payable ...................................................      $   1,116,485       $     425,485
    Trade accounts payable ................................................          5,139,164           3,397,593
    Accrued expenses (Note 4) .............................................         11,065,604          11,139,369
    Current maturities of long-term debt (Note 5) .........................         10,956,533           6,188,241
                                                                                 -------------       -------------
Total current liabilities .................................................         28,277,285          21,150,688

Long-term debt, less current maturities (Notes 5 and 6) ...................         64,452,648          19,057,816
Deferred income taxes (Note 7) ............................................         17,008,364          14,576,038
Insurance and claims accruals .............................................          2,192,714           2,092,614

Commitments and contingencies (Notes 6 and 12)

Stockholders' equity (Notes 5 and 9):
    Preferred Stock, $.01 par value; 1,000,000 shares                                       --                  --
      authorized; none issued .............................................
    Common Stock, $.01 par value; 16,000,000 shares
      authorized; issued 9,387,041 shares in 1999
      and 9,437,097 shares in 1998 ........................................             93,870              94,371
    Additional paid-in capital ............................................         12,271,685          12,921,342
    Retained earnings .....................................................         58,840,827          50,199,325
    Less treasury stock, at cost (122,011 shares in 1999 and 46,789
      shares in 1998) .....................................................         (1,098,206)           (480,975)
                                                                                 -------------       -------------
Total stockholders' equity ................................................         70,108,176          62,734,063
                                                                                 -------------       -------------
Total liabilities and stockholders' equity ................................      $ 182,039,688       $ 119,611,219
                                                                                 =============       =============
</TABLE>


See accompanying notes.


                                       18



<PAGE>   21


                                 USA TRUCK, INC.


                              STATEMENTS OF INCOME


<TABLE>
<CAPTION>

                                                                           Year Ended December 31,
                                                            ------------------------------------------------------
                                                                 1999                1998              1997
                                                            ---------------     ---------------   ----------------
<S>                                                         <C>              <C>               <C>
Operating revenues ....................................      $ 166,363,356       $ 145,216,121       $ 129,507,242

Operating expenses and costs:
    Salaries, wages and employee benefits (Note 8) ....         70,197,581          61,296,860          53,122,136
    Operations and maintenance ........................         42,480,525          33,400,982          34,188,558
    Operating taxes and licenses ......................          3,005,166           2,547,449           2,160,408
    Insurance and claims ..............................          7,987,208           7,249,853           6,773,001
    Communications and utilities ......................          1,999,548           1,468,485           1,827,608
    Depreciation and amortization .....................         18,591,780          16,179,143          13,607,835
    Other .............................................          6,264,876           4,113,158           3,658,992
                                                             -------------       -------------       -------------
                                                               150,526,684         126,255,930         115,338,538
                                                             -------------       -------------       -------------
Operating income ......................................         15,836,672          18,960,191          14,168,704

Other (income) expenses:
    Interest expense ..................................          1,655,558           1,714,662           1,379,481
    Gain on disposal of assets ........................             (9,297)            (37,088)             (1,731)
    Other, net ........................................            (22,588)            102,340            (190,641)
                                                             -------------       -------------       -------------
                                                                 1,623,673           1,779,914           1,187,109
                                                             -------------       -------------       -------------
Income before income taxes ............................         14,212,999          17,180,277          12,981,595

Income taxes (Note 7):
    Current ...........................................          2,774,219           3,366,164           4,027,787
    Deferred ..........................................          2,797,278           3,316,964           1,050,336
                                                             -------------       -------------       -------------
                                                                 5,571,497           6,683,128           5,078,123
                                                             -------------       -------------       -------------
Net income ............................................      $   8,641,502       $  10,497,149       $   7,903,472
                                                             =============       =============       =============
Net income per share (Notes 9 and 10):
    Basic earnings per share ..........................      $        0.93       $        1.12       $         .84
                                                             =============       =============       =============
    Diluted earnings per share ........................      $        0.92       $        1.11       $         .83
                                                             =============       =============       =============
</TABLE>

See accompanying notes.

                                       19
<PAGE>   22



                                 USA TRUCK, INC.


                       STATEMENTS OF STOCKHOLDERS' EQUITY


<TABLE>
<CAPTION>

                                           COMMON STOCK        ADDITIONAL        RETAINED          TREASURY             TOTAL
                                                                PAID-IN          EARNINGS           STOCK
                                                                CAPITAL
                                           ------------       ------------      ------------      ------------       ------------
<S>                                        <C>                <C>               <C>               <C>                <C>
Balance at January 1, 1997 .............   $     94,996       $ 13,837,785      $ 31,798,704      $ (1,307,490)      $ 44,423,995
    Exercise of stock options, net
      (Note 10) ........................            608            374,439                --                --            375,047
    Purchases of 40,500 shares of
      common stock into treasury .......             --                 --                --          (329,253)          (329,253)
    Retirement of 185,500 shares
      of treasury stock ................         (1,855)        (1,634,888)               --         1,636,743                 --
    Net income for 1997 ................             --                 --         7,903,472                --          7,903,472
                                           ------------       ------------      ------------      ------------       ------------
Balance at December 31, 1997 ...........         93,749         12,577,336        39,702,176                --         52,373,261
    Exercise of stock options, net
      (Note 10) ........................            622            290,941                --                --            291,563
    Tax benefit of stock options
      (Note 7) .........................             --             53,065                --                --             53,065
    Purchases of 54,750 shares of
      common stock into treasury .......             --                 --                --          (585,962)          (585,962)
    Sale of 7,961 shares of treasury
      stock to employee stock
      purchase plan ....................             --                 --                --           104,987            104,987
    Net income for 1998 ................             --                 --        10,497,149                --         10,497,149
                                           ------------       ------------      ------------      ------------       ------------
Balance at December 31, 1998 ...........         94,371         12,921,342        50,199,325          (480,975)        62,734,063
    Exercise of stock options, net
      (Note 10) ........................            499            278,219                --                --            278,718
    Purchase of 186,600 shares of
      common stock into treasury .......             --                 --                --        (1,662,883)        (1,662,883)
    Sale of 11,379 shares of
      treasury stock to employee
      stock purchase plan ..............             --                 --                --           116,776            116,776
    Retirement of 100,000 shares
       out of treasury stock ...........         (1,000)          (927,876)               --           928,876                 --
    Net income for 1999 ................             --                 --         8,641,502                --          8,641,502
                                           ------------       ------------      ------------      ------------       ------------
Balance at December 31, 1999 ...........   $     93,870       $ 12,271,685      $ 58,840,827      $ (1,098,206)      $ 70,108,176
                                           ============       ============      ============      ============       ============
</TABLE>


See accompanying notes.

                                       20
<PAGE>   23



                                 USA TRUCK, INC.

                            STATEMENTS OF CASH FLOWS

<TABLE>
<CAPTION>

                                                                                Year Ended December 31,
                                                                  --------------------------------------------------
                                                                      1999               1998               1997
                                                                  ------------       ------------       ------------
<S>                                                               <C>                <C>                <C>
OPERATING ACTIVITIES
Net income .................................................      $  8,641,502       $ 10,497,149       $  7,903,472

Adjustments to reconcile net income to net cash
    provided by operating activities:
      Depreciation and amortization ........................        18,591,780         16,179,143         13,607,835
      Provision for doubtful accounts ......................           121,900             30,000             30,000
      Deferred income taxes ................................         2,797,278          3,316,964          1,050,336
      Gain on disposal of assets ...........................            (9,297)           (37,088)            (1,731)
      Changes in operating assets and liabilities:
         Receivables .......................................       (17,186,596)        (1,363,041)          (186,827)
         Inventories, prepaid expenses and other
           current assets ..................................          (609,527)        (1,103,891)          (106,694)
         Bank drafts payable, trade accounts payable and
           accrued expenses ................................         1,103,205            539,981          5,568,536
         Insurance and claims accruals - long-term .........           100,100            408,000            408,000
                                                                  ------------       ------------       ------------
Net cash provided by operating activities ..................        13,550,345         28,467,217         28,272,927

INVESTING ACTIVITIES
Purchases of property and equipment ........................       (29,492,589)       (21,731,600)       (32,777,855)
Purchase of CCC Express, Inc. ..............................       (22,891,055)                --                 --
Proceeds from sale of equipment ............................         9,651,337          6,395,382          8,174,217
Proceeds from sale of investments ..........................           968,196                 --                 --
(Increase) decrease in other assets ........................          (153,165)            31,150           (307,728)
                                                                  ------------       ------------       ------------
Net cash used by investing activities ......................       (41,917,276)       (15,305,068)       (24,911,366)


FINANCING ACTIVITIES
Borrowings under long-term debt ............................        55,685,310         14,325,000         29,553,208
Proceeds from the exercise of stock options ................           278,718            291,563            375,047
Proceeds from sale of treasury stock .......................           116,776            104,987                 --
Refund of security deposits ................................         1,745,478                 --                 --
Payments to repurchase common stock ........................        (1,662,883)          (585,962)          (597,379)
Principal payments on long-term debt .......................       (19,595,310)       (22,800,000)       (23,828,208)
Principal payments on capitalized lease obligations ........        (7,835,094)        (6,385,405)        (6,683,864)
                                                                  ------------       ------------       ------------
Net cash provided by (used by) financing activities ........        28,732,995        (15,049,817)        (1,181,196)
                                                                  ------------       ------------       ------------

Increase (decrease) in cash and cash equivalents ...........           366,064         (1,887,668)         2,180,365
Cash and cash equivalents:
    Beginning of year ......................................         1,779,643          3,667,311          1,486,946
                                                                  ------------       ------------       ------------
    End of year ............................................      $  2,145,707       $  1,779,643       $  3,667,311
                                                                  ============       ============       ============
</TABLE>


See accompanying notes

                                       21

<PAGE>   24

                                 USA TRUCK, INC.

                          NOTES TO FINANCIAL STATEMENTS

                                DECEMBER 31, 1999


1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

DESCRIPTION OF BUSINESS

USA Truck, Inc. (the "Company"), operates as a truckload motor carrier with
operating authority to provide service throughout the continental United States
and parts of Canada and Mexico.

USE OF ESTIMATES

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the amounts reported in the financial statements and accompanying notes.
Actual results could differ from those estimates.

CASH EQUIVALENTS

The Company considers all highly liquid investments with a maturity of three
months or less when purchased to be cash equivalents. The carrying amount
reported in the balance sheet for cash and cash equivalents approximates its
fair value.

CONCENTRATION OF CREDIT RISK

The Company performs ongoing credit evaluations and generally does not require
collateral. The Company maintains reserves for potential credit losses. Such
losses have been within management's expectations.

One customer represented approximately 7% and 11% of net trade receivables as of
December 31, 1999 and 1998, respectively. A different customer represented
approximately 9% and 11% of revenues for the years ended December 31, 1999 and
1998, respectively.

INVENTORIES

Inventories consist primarily of tires, fuel and supplies and are stated at the
lower of cost (first-in, first-out basis) or market.

PROPERTY AND EQUIPMENT

Property and equipment is recorded at cost. For financial reporting purposes,
the cost of such property is depreciated principally by the straight-line method
using the following estimated useful lives: structures - 5 to 39.5 years;
revenue equipment - 3 to 7 years; and service, office and other equipment - 3 to
20 years. Gains and losses on asset sales are reflected in the year of disposal.
Trade-in allowances in excess of book value of revenue equipment are accounted
for by adjusting the cost of assets acquired. Tires purchased with revenue
equipment are capitalized as a part of the cost of such equipment, with
replacement tires being inventoried and expensed when placed in service.

                                       22
<PAGE>   25


                                 USA TRUCK, INC.


                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

CLAIMS LIABILITIES

The Company is self-insured up to certain limits for bodily injury, property
damage, workers' compensation, and cargo loss and damage claims. Provisions are
made for both the estimated liabilities for known claims as incurred and
estimates for those incurred but not reported. In 1999 the Company was
self-insured up to $1,000,000 per occurrence for bodily injury and property
damage, up to $500,000 for workers' compensation claims, and up to $100,000 per
occurrence for cargo loss and damage claims. These self-insurance arrangements
are secured by $1,010,000 in letters of credit.

The workers' compensation self-insurance is secured by $300,000 in certificates
of deposit maturing during 2000. The certificates of deposit are included in
other assets on the balance sheet as of December 31, 1999 and 1998.

REVENUE RECOGNITION

Revenues are recognized based on a method whereby revenue is allocated between
reporting periods based on relative transit time in each period and direct
expenses are allocated on the same basis.

INCOME TAXES

Deferred income taxes reflect the net tax effects of temporary differences
between the carrying amounts of assets and liabilities for financial reporting
purposes and the amounts used for income tax purposes. Significant components of
the Company's deferred tax liabilities and assets include temporary differences
relating to depreciation, capitalized leases and certain revenues and expenses.

EARNINGS PER SHARE

Earnings per share amounts are computed based on Financial Accounting Standards
Board Statement No. 128, Earnings per Share. Basic earnings per share is
computed based on the weighted average number of shares of common stock
outstanding during the year excluding any dilutive effects of options. Diluted
earnings per share is computed by adjusting the weighted average shares
outstanding by common stock equivalents attributable to dilutive options.

COMPENSATION TO EMPLOYEES

Stock based compensation to employees is accounted for based on the intrinsic
value method under Accounting Principles Board Opinion No. 25, Accounting for
Stock Issued to Employees (APB 25). Under APB 25 because the exercise price of
employee stock options equaled the market price of the underlying stock on the
grant date, no compensation expense is recorded. The Company has adopted the
disclosure - only provisions of Statement of Financial Accounting Standards No.
123, Accounting for Stock-Based Compensation (SFAS 123).

                                       23
<PAGE>   26

                                 USA TRUCK, INC.


                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

NEW ACCOUNTING PRONOUNCEMENTS

In 1997, the Financial Accounting Standards Board issued Statement of Financial
Accounting Standards No. 130, Reporting Comprehensive Income. This statement was
adopted in 1998 and had no impact on the Company's financial statements.

In 1997, the Financial Accounting Standards Board issued Statement of Financial
Accounting Standards No. 131, Disclosures about Segments of an Enterprise and
Related Information. The Company's operations are comprised entirely of one
segment. This statement was adopted in 1998 and had no impact on the disclosures
in the Company's financial statements.

In 1998, the American Institute of Certified Public Accountants issued Statement
of Position 98-1, Accounting for the Costs of Computer Software Developed or
Obtained for Internal Use. This statement provides guidance on the
capitalization of certain costs incurred in developing or acquiring internal-use
computer software. This statement was adopted in 1998 and did not have a
significant impact on the Company's financial statements.

2. ACQUISITION

On November 1, 1999, pursuant to an Asset Purchase Agreement (the "Asset
Purchase Agreement") dated October 31, 1999, the Company acquired substantially
all the assets of CARCO Carrier Corporation, an Arkansas corporation, which
operated under the name CCC Express, Inc. ("CCC"), for a purchase price of $35.3
million. The purchase price consisted of (i) a cash payment of approximately
$3.0 million; (ii) the assumption of approximately $6.5 million of liabilities
including equipment notes and (iii) the refinancing of approximately $25.8
million in other debt secured by equipment. Additionally, $5.9 million of the
$25.8 million consisted of a non-cash transaction. The cash portion of the
purchase price was paid from available cash and proceeds of borrowings under the
Company's credit facilities. The purchase price was equal to the net book value
of CCC on the closing date, as adjusted in accordance with the Asset Purchase
Agreement, plus $2 million. In connection with the acquisition, the Company's
borrowing under its General Line of Credit was increased from $20 million to $35
million effective October 28, 1999.

The acquisition has been accounted for under the purchase method. Accordingly,
the acquired assets and liabilities have been recorded at their estimated fair
values at the date of acquisition. Operating results of the acquired business
are included in the statements of income from the acquisition date.

                                       24
<PAGE>   27



                                 USA TRUCK, INC.


                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

2. ACQUISITION (CONTINUED)

The following pro forma summary of results of operations has been prepared as
though CCC had been acquired on January 1, 1998. These pro forma results have
been prepared for comparative purposes only and do not purport to be indicative
of what would have occurred had the acquisition been made on January 1, 1998, or
of results which may occur in the future.

<TABLE>
<CAPTION>
                                                          December 31,
                                              ------------------------------------
                                                    1999                 1998
                                              ---------------      ---------------
<S>                                           <C>                  <C>
         Operating revenues ............      $   222,089,793      $   211,937,321
         Net Income ....................            6,127,054            9,074,624
         Basic earnings per share ......      $           .66      $           .97
         Diluted earnings per share ....      $           .65      $           .96
</TABLE>


3.  PREPAID EXPENSES AND OTHER CURRENT ASSETS

Prepaid expenses and other current assets consist of the following:

<TABLE>
<CAPTION>
                                                          December 31,
                                              ------------------------------------
                                                   1999                  1998
                                              ---------------      ---------------
<S>                                           <C>                  <C>
         Prepaid licenses and taxes ....      $     1,381,345      $       938,881
         Prepaid insurance .............            2,039,749            1,624,315
         Other .........................              212,962               77,365
                                              ---------------      ---------------
                                              $     3,634,056      $     2,640,561
                                              ===============      ===============
</TABLE>


4. ACCRUED EXPENSES

Accrued expenses consist of the following:

<TABLE>
<CAPTION>

                                                                         December 31,
                                                             ------------------------------------
                                                                  1999                 1998
                                                             ---------------      ---------------
<S>                                                          <C>                  <C>
         Salaries, wages, bonuses and
          employee benefits ...........................      $     4,352,233      $     4,825,956
         Insurance and claims accruals ................            3,585,366            4,071,832
         Other ........................................            3,128,005            2,241,581
                                                             ---------------      ---------------
                                                             $    11,065,604      $    11,139,369
                                                             ===============      ===============
</TABLE>

                                       25
<PAGE>   28

                                 USA TRUCK, INC.


                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

5. LONG-TERM DEBT

 Long-term debt consists of the following:

<TABLE>
<CAPTION>
                                                                    December 31,
                                                        ---------------------------------
                                                             1999              1998
                                                        ----------------   --------------
<S>                                                     <C>                <C>
         Revolving credit agreement(1) ...........      $ 38,990,000       $  2,900,000
         Capitalized lease obligations(2) ........        36,419,181         22,346,057
                                                        ------------       ------------
                                                          75,409,181         25,246,057
         Less current maturities .................       (10,956,533)        (6,188,241)
                                                        ------------       ------------
                                                        $ 64,452,648       $ 19,057,816
                                                        ============       ============
</TABLE>

(1)  The Company's revolving credit agreement (the "Line of Credit"), effective
     December 15, 1999, provides for available borrowings of $40,000,000,
     including letters of credit not exceeding $5,000,000. The Line of Credit
     matures on April 30, 2002, prior to which time, subject to certain
     conditions, the remaining balance may be converted at any time at the
     Company's option to a term loan requiring forty-eight equal monthly
     principal payments plus interest. The credit facility bears variable
     interest based on the lenders prime rate, or prime plus 1/2% or LIBOR plus
     a certain percentage which is determined based on the Company's attainment
     of certain financial ratios. The effective interest rate on the Company's
     borrowings under the credit facility for the year ending December 31, 1999
     was 6.09%. A quarterly commitment fee of 1/4% per annum is payable on the
     unused credit line. The Line of Credit is collateralized by accounts
     receivable and all otherwise unencumbered equipment. The Company has
     outstanding letters of credit of approximately $1,010,000 at December 31,
     1999.

     The Line of Credit requires the Company to meet certain financial covenants
     and to maintain a minimum tangible net worth of approximately $40,300,000
     at December 31, 1999. The Company was in compliance with these covenants at
     December 31, 1999. The covenants would prohibit the payment of dividends by
     the Company if such payment would cause the Company to be in violation of
     any of the covenants. The carrying amount reported in the balance sheet for
     borrowings under the Line of Credit approximates its fair value since the
     interest rate is variable.

(2)  The leases extend through June 2003 and contain renewal or fixed price
     purchase options. The effective interest rates on the leases range from
     1.89% to 10.15% at December 31, 1999. The lease agreements require the
     Company to pay property taxes, maintenance and operating expenses.

The Company made interest payments of approximately $1,490,000, $1,699,000 and
$1,454,000 during 1999, 1998 and 1997, respectively. The Company capitalized
$6,800 in interest as a result of construction during 1998.


                                       26
<PAGE>   29


                                 USA TRUCK, INC.


                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

6. LEASES AND COMMITMENTS

Capital lease obligations of $21,908,219, $6,763,522 and $12,416,151 were
incurred during the years ended December 31, 1999, 1998 and 1997, respectively.

At December 31, 1999, the future minimum payments under capitalized leases with
initial terms of one year or more were $12,731,609 for 2000, $11,203,043 for
2001, $10,012,512 for 2002 and $6,085,516 for 2003. The present value of net
minimum lease payments was $36,419,151 which includes the current portion of the
capital leases of $10,956,533 and excludes amounts representing interest of
$3,613,529.

At December 31, 1999, property and equipment included capitalized leases which
had capitalized costs of $45,526,083, accumulated amortization of $7,944,872 and
a net book value of $37,581,211. At December 31, 1998 property and equipment
included capitalized leases which had capitalized costs of $28,666,354,
accumulated amortization of $6,957,207 and a net book value of $21,709,147.
Amortization of leased assets is included in depreciation and amortization
expense.

Commitments to purchase revenue equipment, which are cancelable by the Company
if certain conditions are met, aggregated approximately $63,700,000 at December
31, 1999.


7. FEDERAL AND STATE INCOME TAXES

Significant components of the Company's deferred tax liabilities and assets as
of December 31, 1999 and 1998 are as follows:

<TABLE>
<CAPTION>

                                                                   December 31,
                                                        -------------------------------
                                                            1999               1998
                                                        ------------       ------------
<S>                                                     <C>                <C>
Noncurrent deferred tax liabilities:
    Tax over book depreciation ...................      $ 16,904,280       $ 14,512,768
    Capitalized leases ...........................           104,084             63,270
                                                        ------------       ------------
Total noncurrent deferred tax liabilities ........      $ 17,008,364       $ 14,576,038
                                                        ============       ============
Current deferred tax assets:
    Revenue recognition ..........................      $    (89,392)      $   (116,286)
    Accrued expenses not deductible until paid ...        (2,389,894)        (2,420,906)
    Allowance for doubtful accounts ..............           (99,166)           (53,033)
                                                        ------------       ------------
Total current deferred tax assets ................        (2,578,452)        (2,590,225)

Current deferred tax liabilities:
    Prepaid expenses deductible when paid ........         1,370,039          1,016,860
                                                        ------------       ------------
Net current deferred tax assets ..................      $ (1,208,413)      $ (1,573,365)
                                                        ============       ============
</TABLE>



                                       27

<PAGE>   30


                                 USA TRUCK, INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

7. FEDERAL AND STATE INCOME TAXES (CONTINUED)

Significant components of the provision for income taxes are as follows:

<TABLE>
<CAPTION>
                                                                       Year Ended December 31,
                                                       --------------------------------------------------
                                                              1999             1998              1997
                                                       ---------------   --------------   ---------------
<S>                                                    <C>               <C>              <C>
Current
Federal.............................................   $     2,406,997   $    2,812,318   $     3,491,181
State...............................................           367,222          553,846           536,606
                                                       ---------------   --------------   ---------------
Total current.......................................         2,774,219        3,366,164         4,027,787

Deferred
Federal.............................................         2,350,248        2,883,617           862,092
State...............................................           447,030          433,347           188,244
                                                       ---------------   --------------   ---------------
Total deferred......................................         2,797,278        3,316,964         1,050,336
                                                       ---------------   --------------   ---------------
Total income tax expense............................   $     5,571,497   $    6,683,128   $     5,078,123
                                                       ===============   ==============   ===============
</TABLE>

During 1998, 1998 and 1997, the Company made income tax payments of
approximately $3,105,300, $3,484,000, and $3,644,000, respectively.

During 1998, the Company recognized a tax benefit of $53,065 related to stock
options. This amount was added to additional paid-in capital.

A reconciliation between the effective income tax rate and the statutory federal
income tax rate is as follows:

<TABLE>
<CAPTION>
                                                                       Year Ended December 31,
                                                       --------------------------------------------------
                                                              1999             1998              1997
                                                       ---------------   --------------   ---------------
<S>                                                    <C>               <C>              <C>
Income tax at 34% statutory federal rate............   $     4,832,420   $    5,841,294   $     4,413,742
Federal income tax effects of:
    State income taxes..............................          (276,846)        (336,172)         (246,449)
    Nondeductible expenses..........................            58,846           98,131            (3,582)
    Other...........................................           142,825           92,682           189,562
                                                       ---------------   --------------   ---------------
    Federal income taxes............................         4,757,245        5,695,935         4,353,273
State income taxes..................................           814,252          987,193           724,850
                                                       ---------------   --------------   ---------------
Total income tax expense............................   $     5,571,497   $    6,683,128   $     5,078,123
                                                       ===============   ==============   ===============
Effective tax rate..................................              39.2%            38.9%             39.1%
                                                       ===============   ==============   ===============
</TABLE>


                                       28
<PAGE>   31




                                 USA TRUCK, INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

8. EMPLOYEE BENEFIT PLANS

The Company sponsors the USA Truck, Inc. Employees' Investment Plan, a tax
deferred savings plan under section 401(k) of the Internal Revenue Code, that
covers substantially all employees. Employees can contribute up to 15% of their
compensation, with the Company matching 50% of the first 4% of compensation
contributed by each employee. Company matching contributions were approximately
$634,000, $652,000 and $558,000 for 1999, 1998 and 1997, respectively.

9. EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per
share:

<TABLE>
<CAPTION>
                                                                      Year Ended December 31,
                                                        -------------------------------------------------
                                                              1999              1998             1997
                                                        --------------   ----------------  --------------
<S>                                                     <C>              <C>               <C>
Numerator:
   Net Income.......................................    $    8,641,502   $     10,497,149  $    7,903,472

Denominator:
   Denominator for basic earnings per
     share - weighted average shares................         9,324,037          9,399,727       9,355,671

   Effect of dilutive securities:
     Employee stock options.........................            30,404             66,244         128,899
                                                        --------------   ----------------   -------------
   Denominator for diluted earnings per
     share - adjusted weighted average
     shares and assumed conversions.................         9,354,441          9,465,971       9,484,570
                                                        ==============   ================   =============
Basic earnings per share............................              $.93              $1.12            $.84
                                                        ==============   ================   =============
Diluted earnings per share..........................              $.92              $1.11            $.83
                                                        ==============   ================   =============
Anti-dilutive employee stock options................            94,600                 --           3,000
                                                        ==============   ================   =============
</TABLE>



10. COMMON STOCK TRANSACTIONS

The Company has a stock option plan which provides for the granting of incentive
or nonqualified options to purchase up to 800,000 shares of common stock to
officers and other key employees. No options may be granted under this plan for
less than the fair market value of the common stock at the date of the grant.
Although the exercise period is determined when options are actually granted, no
option will be exercised later than 10 years after it is granted.

The Company also has a nonqualified stock option plan for directors who are not
officers or employees of the Company, which provides for the granting of options
to purchase up to 25,000 shares of common stock. No options may be granted under
this plan with exercise prices of less than the fair market value of the common
stock at the date of grant. Although the exercise period is determined when
options are actually granted, options will vest no less than six months or more
than three years after the grant date and may not be exercised later than five
years after the grant date.



                                       29
<PAGE>   32

                                 USA TRUCK, INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)


10. COMMON STOCK TRANSACTIONS (CONTINUED)

A summary of the Company's stock option activity, and related information for
the years ended December 31, follows:

<TABLE>
<CAPTION>
                                     1999                      1998                     1997
                            ------------------------ ------------------------  -----------------------
                                         WEIGHTED-               Weighted-                Weighted-
                                          AVERAGE                 Average                  Average
                            OPTIONS   EXERCISE PRICE Options   Exercise Price  Options  Exercise Price
                            --------  -------------- --------  -------------- --------  --------------
<S>                          <C>          <C>         <C>          <C>         <C>          <C>
Outstanding-beginning
  of year                    323,200      $ 7.72      356,400      $ 6.90      425,320      $ 6.87
Granted                           --          --       46,000       11.59        9,600        9.73
Exercised                    (65,000)     $ 6.25      (79,200)       6.30      (63,320)       6.25
Canceled                          --          --           --          --      (15,200)      10.50
                            --------      ------     --------      ------     --------      ------
Outstanding-end of year      258,200      $ 8.09      323,200      $ 7.72      356,400      $ 6.90
                            ========      ======     ========      ======     ========      ======
Exercisable at end of
year                          95,600      $ 7.85      103,000      $ 6.46      142,200      $ 6.25
</TABLE>


Exercise prices for options outstanding as of December 31, 1999 ranged from
$6.25 to $13.00. The weighted-average fair value of options granted during 1998
was $4.30 and $4.46. No options were granted during 1999. The weighted-average
remaining contractual life of these options is 2.14 years.

In 1999, 1998 and 1997, 44,595, 45,240 and 60,007 options, respectively, were
exercised for cash. In 1999, 1998 and 1997 additional options of 20,405, 33,960
and 3,313 respectively, were exercised by the exchange of 15,056, 16,971 and
2,588 shares of stock respectively, (with a market value equal to the exercise
price of the options). The exchanged shares were then canceled.

Since the Company has adopted the disclosure-only provisions of SFAS 123, no
compensation cost has been recognized for the stock option plans. Had
compensation cost for the Company's two stock option plans been determined based
on the fair value at the grant date for awards in 1999, 1998 and 1997 consistent
with the provisions of SFAS 123, the Company's pro forma net income would have
been $8,603,394, $10,431,143 and $7,852,172, pro forma basic earnings per share
would have been $.92, $1.11 and $.84, and pro forma diluted earnings per share
would have been $.92, $1.10 and $.83, respectively.

The fair value of each option grant is estimated on the date of grant using the
Black-Scholes option-pricing model. The following weighted-average assumptions
were used for grants in 1999: dividend yield of 0%; expected volatility of
0.292%; risk-free interest rates range from 4.29% to 5.44% and expected lives
range from 3 to 5 years. The following weighted-average assumptions were used
for grants in 1998: dividend yield of 0%; expected volatility of 0.457%;
risk-free interest rates range from 4.29% to 5.44% and expected lives range from
3 to 5 years. The following weighted-average assumptions were used for grants in
1996: dividend yield of 0%; expected volatility of 0.535%; risk-free interest
rates range from 5.45% to 6.17% and expected lives range from 3 to 5 years.



                                       30

<PAGE>   33

                                 USA TRUCK, INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

11. QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

The tables below present quarterly financial information for 1999 and 1998:

<TABLE>
<CAPTION>
                                                                       1999
                                                                THREE MONTHS ENDED
                                              -----------------------------------------------------------
                                               MARCH 31,       JUNE 30,      SEPTEMBER 30,   DECEMBER 31,
                                              -----------     -----------    -------------   ------------

<S>                                           <C>             <C>             <C>             <C>
Operating revenues ......................     $36,199,447     $38,117,504     $40,416,850     $51,629,555
Operating expenses and costs ............      32,063,006      33,830,877      37,330,310      47,302,491
                                              -----------     -----------     -----------     -----------
Operating income ........................       4,136,441       4,286,627       3,086,540       4,327,064
Other expenses, net .....................         313,880         282,016         308,597         719,180
                                              -----------     -----------     -----------     -----------
Income before income taxes ..............       3,822,561       4,004,611       2,777,943       3,607,884
Income taxes ............................       1,498,444       1,569,808       1,088,954       1,414,291
                                              -----------     -----------     -----------     -----------
Net income ..............................     $ 2,324,117     $ 2,434,803     $ 1,688,989     $ 2,193,593
                                              ===========     ===========     ===========     ===========

Average shares outstanding (basic) ......       9,392,817       9,373,109       9,298,377       9,257,361
                                              ===========     ===========     ===========     ===========
Basic earnings per share ................     $       .25     $       .26     $       .18     $       .24
                                              ===========     ===========     ===========     ===========

Average shares outstanding (diluted) ....       9,452,481       9,410,750       9,335,972       9,287,601
                                              ===========     ===========     ===========     ===========
Diluted earnings per share ..............     $       .25     $       .26     $       .18     $       .24
                                              ===========     ===========     ===========     ===========
</TABLE>

<TABLE>
<CAPTION>
                                                                       1998
                                                                Three Months Ended
                                              ------------------------------------------------------------
                                               March 31,       June 30,      September 30,    December 31,
                                              -----------     -----------    -------------    ------------

<S>                                           <C>             <C>             <C>             <C>
Operating revenues ......................     $35,223,203     $37,387,246     $36,266,931     $36,338,741
Operating expenses and costs ............      30,993,887      32,208,832      31,213,221      31,839,990
                                              -----------     -----------     -----------     -----------
Operating income ........................       4,229,316       5,178,414       5,053,710       4,498,751
Other expenses, net .....................         403,265         598,909         435,041         342,699
                                              -----------     -----------     -----------     -----------
Income before income taxes ..............       3,826,051       4,579,505       4,618,669       4,156,052
Income taxes ............................       1,488,334       1,781,428       1,796,662       1,616,704
                                              -----------     -----------     -----------     -----------
Net income ..............................     $ 2,337,717     $ 2,798,077     $ 2,822,007     $ 2,539,348
                                              ===========     ===========     ===========     ===========

Average shares outstanding (basic) ......       9,378,054       9,418,826       9,417,520       9,375,927
                                              ===========     ===========     ===========     ===========
Basic earnings per share ................     $       .25     $       .30     $       .30     $       .27
                                              ===========     ===========     ===========     ===========

Average shares outstanding (diluted) ....       9,478,162       9,531,054       9,512,954       9,442,155
                                              ===========     ===========     ===========     ===========
Diluted earnings per share ..............     $       .25     $       .29     $       .30     $       .27
                                              ===========     ===========     ===========     ===========
</TABLE>

12. LITIGATION

The Company is not a party to any pending legal proceedings which management
believes to be material to the financial condition of the Company. The Company
maintains liability insurance against risks arising out of the normal course of
its business.

                                       31

<PAGE>   34


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

     There were no changes in or disagreements with accountants on accounting
and financial disclosure matters during any period covered by the financial
statements filed herein or any period subsequent thereto.

                                    PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     The sections entitled "Election of Directors", "Executive Officers" and
"Section 16(a) Compliance" in the Company's proxy statement for the annual
meeting of stockholders to be held on May 3, 2000, set forth certain information
with respect to the directors, nominees for election as directors and executive
officers of the Company and are incorporated herein by reference.

ITEM 11. EXECUTIVE COMPENSATION

     The section entitled "Executive Compensation" in the Company's proxy
statement for the annual meeting of stockholders to be held on May 3, 2000, sets
forth certain information with respect to the compensation of management of the
Company and is incorporated herein by reference.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

     The sections entitled "Outstanding Stock and Voting Rights" and "Election
of Directors" in the Company's proxy statement for the annual meeting of
stockholders to be held on May 3, 2000, set forth certain information with
respect to the ownership of the Company's voting securities and are incorporated
herein by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The section entitled "Certain Transactions" in the Company's proxy
statement for the annual meeting of stockholders to be held on May 3, 2000, sets
forth certain information with respect to relations of and transactions by
management of the Company and is incorporated herein by reference.

                                       32

<PAGE>   35


                                     PART IV

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

     (a) THE FOLLOWING DOCUMENTS ARE FILED AS A PART OF THIS REPORT:

     1. Financial statements.

     The following financial statements of the Company are included in Part II,
Item 8 of this report:

<TABLE>
<CAPTION>
                                                                                            PAGE
                                                                                            ----

<S>                                                                                          <C>
Balance Sheets as of December 31, 1999 and 1998 ........................................     18
Statements of Income for the years ended December 31, 1999, 1998 and 1997 ..............     19
Statements of Stockholders' Equity for years ended December 31, 1999, 1998 and 1997 ....     20
Statements of Cash Flows for the years ended December 31, 1999, 1998 and 1997 ..........     21
Notes to Financial Statements ..........................................................     22
</TABLE>

     2. The following financial statement schedule of the Company is included in
Item 14(d):

<TABLE>
<S>                                                                                          <C>
Schedule II  - Valuation and Qualifying Accounts........................................     38
</TABLE>

     Schedules other than the schedule listed above have been omitted since the
required information is not present or not present in amounts sufficient to
require submission of the schedule, or because the information required is
included in the financial statements or the notes thereto.

     3. Listing of exhibits.

Exhibit No.            Exhibit

     2.1               Asset Purchase Agreement dated as of October 31, 1999
                       between the Company, as buyer, and CARCO Carrier
                       Corporation doing business as CCC Express, Inc., as
                       seller, and CARCO Capital Corporation (incorporated by
                       reference to Exhibit 2.1 to the Company's Report on Form
                       8-K filed on November 15, 1999).

     3.1               Restated and Amended Certificate of Incorporation of the
                       Company (incorporated by reference to Exhibit 3.1 to the
                       Company's Registration Statement on Form S-1,
                       Registration No. 33-45682, filed with the Securities and
                       Exchange Commission on February 13, 1992 [the "Form
                       S-1"]).

     3.2               Bylaws of the Company as currently in effect
                       (incorporated by reference to Exhibit 3.2 to Amendment
                       No. 1 to the Form S-1 filed with the Securities and
                       Exchange Commission on March 19, 1992 ["Amendment No.
                       1"]).

     3.3               Certificate of Amendment to Certificate of Incorporation
                       of the Company filed March 17, 1992 (incorporated by
                       reference to Exhibit 3.3 to Amendment No. 1).

     4.1               Specimen certificate evidencing shares of the Common
                       Stock, $.01 par value, of the Company (incorporated by
                       reference to Exhibit 4.1 to the Form S-1).

     4.2               Fourth Amended and Restated Revolving Credit Agreement
                       dated December 30, 1992, between the Company and Deposit
                       Guaranty National Bank, as Lender (incorporated by
                       reference to Exhibit 4.2 to the Company's annual report
                       on Form 10-K for the year ended December 31, 1992).

                                       33

<PAGE>   36

     4.3               Fourth Amended and Restated Revolving Note of the Company
                       dated December 30, 1992, in the maximum principal amount
                       of $12,000,000 payable to Deposit Guaranty National Bank,
                       executed in connection with the credit facility filed as
                       Exhibit 4.2 (incorporated by reference to Exhibit 4.3 to
                       the Company's annual report on Form 10-K for the year
                       ended December 31, 1992).

     4.4               Fifth Amendment to Fourth Amended and Restated Revolving
                       Credit Agreement dated December 30, 1996, between the
                       Company and Deposit Guaranty National Bank, as Lender
                       (incorporated by reference to Exhibit 4.5 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1996).

     4.5               Sixth Amendment to Fourth Amended and Restated Revolving
                       Credit Agreement dated December 30, 1997, between the
                       Company and Deposit Guaranty National Bank, as Lender
                       (incorporated by reference to Exhibit 4.5 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1997).

     4.6               Sixth Amendment to Fourth Amended and Restated Revolving
                       Note of the Company dated December 30, 1997, in the
                       maximum principal amount of $28,500,000 payable to
                       Deposit Guaranty National Bank, executed in connection
                       with the credit facility filed as Exhibit 4.5
                       (incorporated by reference to Exhibit 4.6 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1997).

     4.7               Seventh Amendment to Fourth Amended and Restated
                       Revolving Credit Agreement dated October 30, 1998,
                       between the Company and Deposit Guaranty National Bank,
                       as Lender (incorporated by reference to Exhibit 4.7 to
                       the Company's annual report on Form 10-K for the year
                       ended December 31, 1998).

     4.8               Seventh Amendment to Fourth Amended and Restated
                       Revolving Note of the Company dated October 30, 1998, in
                       the maximum principal amount of $20,000,000 payable to
                       Deposit Guaranty National Bank, executed in connection
                       with the credit facility filed as Exhibit 4.7
                       (incorporated by reference to Exhibit 4.8 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1998).

     4.9*              Eighth Amendment to Fourth Amended and Restated
                       Revolving Credit Agreement dated October 28, 1999,
                       between the Company and Deposit Guaranty National Bank,
                       as Lender.

     4.10*             Eighth Amended and Restated Revolving Note of the
                       Company dated October 28, 1999, in the maximum principal
                       amount of $35,000,000 payable to Deposit Guaranty
                       National Bank, executed in connection with the credit
                       facility filed as Exhibit 4.9.

     4.11*             Ninth Amendment to Fourth Amended and Restated
                       Revolving Credit Agreement dated December 15, 1999,
                       between the Company and Deposit Guaranty National Bank,
                       as Lender.

     4.12*             Ninth Amended and Restated Revolving Note of the
                       Company dated December 15, 1999, in the maximum principal
                       amount of $40,000,000 payable to Deposit Guaranty
                       National Bank,

                                       34

<PAGE>   37

                       executed in connection with the credit facility filed as
                       Exhibit 4.11.

     4.13              TRAC Lease Commitment Agreement dated January 24, 1996,
                       between the Company and Fleet Credit Corporation, as
                       Lender. (incorporated by reference to Exhibit 4.9 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1995).

     4.14              First Amendment to TRAC Lease Commitment Agreement dated
                       November 13, 1996, between the Company and Fleet Credit
                       Corporation, as Lender (incorporated by reference to
                       Exhibit 4.8 to the Company's annual report on Form 10-K
                       for the year ended December 31, 1997).

     4.15              Equipment TRAC Lease Commitment Agreement dated November
                       12, 1997 and accepted November 19, 1997, between the
                       Company and Banc One Leasing Corporation, as Lender
                       (incorporated by reference to Exhibit 4.9 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1997).

     4.16              First Amendment dated December 30, 1998, to the Equipment
                       TRAC Lease Commitment Agreement dated November 12, 1997
                       and accepted November 19, 1997, between the Company and
                       Banc One Leasing Corporation, as Lender, as amended by
                       letter dated March 12, 1999 (incorporated by reference to
                       Exhibit 4.12 to the Company's annual report on Form 10-K
                       for the year ended December 31, 1998).

     4.17*             Second Amendment dated December 30, 1998, to the
                       Equipment TRAC Lease Commitment Agreement dated October
                       25, 1999 between the Company and Banc One Leasing
                       Corporation, as Lender.

     4.18              Instruments with respect to long-term debt not exceeding
                       10% of the total assets of the Company have not been
                       filed. The Company agrees to furnish a copy of such
                       instruments to the Securities and Exchange Commission
                       upon request.

     10.1              Employee Stock Option Plan of the Company (incorporated
                       by reference to Exhibit 10.6 to the Form S-1).

     10.2              Nonqualified Stock Option Plan for Nonemployee Directors
                       of the Company (incorporated by reference to Exhibit 10.7
                       to the Form S-1) terminated in January 1997, except with
                       respect to outstanding options.

     10.3              Description of Incentive Compensation Plan for executive
                       officers of the Company (incorporated by reference to
                       Exhibit 10.8 to the Form S-1).

     10.4              1997 Nonqualified Stock Option Plan for Nonemployee
                       Directors of the Company (incorporated by reference to
                       Exhibit 99.1 to the Company's Registration Statement on
                       Form S-8, Registration No. 333-20721, filed with the
                       Securities and Exchange Commission on January 30, 1997).

     21                The Company has no subsidiaries.

                                       35

<PAGE>   38


     23*               Consent of Ernst & Young LLP, Independent Auditors.

     27.1*             1999 Financial Data Schedule

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

     *   Filed herewith.

Management Compensatory Plans:

   -Employee Stock Option Plan (Exhibit 10.1)

   -Nonqualified Stock Option Plan for Nonemployee Directors (Exhibit 10.2)

   -Incentive Compensation Plan (Exhibit 10.3)

   -1997 Nonqualified Stock Option Plan for Nonemployee Directors (Exhibit 10.4)

     (b) REPORTS ON FORM 8-K:

     Current report on Form 8-K as filed on November 15, 1999.

                                       36

<PAGE>   39



                                 USA TRUCK, INC.

                           ANNUAL REPORT ON FORM 10-K

                          YEAR ENDED DECEMBER 31, 1999

                                   ITEM 14 (d)

                          FINANCIAL STATEMENT SCHEDULE

                                       37

<PAGE>   40


                 SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

                                 USA TRUCK, INC.


<TABLE>
<CAPTION>
             COLUMN A                                          COLUMN B      COLUMN C     COLUMN D    COLUMN E
             --------                                          --------      --------     --------    --------
                                                                               (1)
                                                               BALANCE AT    CHARGED                   BALANCE
                                                               BEGINNING     TO COST      DEDUCTIONS     END
            DESCRIPTION                                        OF PERIOD   AND EXPENSES    -OTHER     OF PERIOD
                                                               ---------   ------------   ----------  ---------

<S>                                                             <C>          <C>          <C>          <C>
Year ended December 31, 1999:
   Deducted from asset accounts:
     Allowance for doubtful accounts ......................     $140,670     $121,900     $  6,580 (a) $ 269,150
                                                                --------     --------     --------     ---------
Year ended December 31, 1998: Deducted from asset accounts:
     Allowance for doubtful accounts ......................     $170,250     $ 30,000     $(59,580)(a) $ 140,670
                                                                --------     --------     --------     ---------
Year ended December 31, 1997: Deducted from asset accounts:
     Allowance for doubtful accounts ......................     $113,000     $ 30,000     $ 27,250 (a) $ 170,250
                                                                --------     --------     --------     ---------
</TABLE>

(a) Uncollectible accounts written off, net recoveries.

                                       38

<PAGE>   41


                                   SIGNATURES


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


USA TRUCK, INC.
(Registrant)


By: /s/ ROBERT M. POWELL              By: /s/ JERRY D. ORLER
    -------------------------------       ---------------------------------
        Robert  M. Powell                     Jerry D. Orler
        President and Chief Executive         Vice President - Finance, Chief
        Officer                               Financial Officer and Secretary

Date: March 30, 2000                   Date: March 30, 2000

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

<TABLE>
<CAPTION>
              Signature                                   Title                                       Date
              ---------                                   -----                                       ----

<S>                                        <C>                                                   <C>
        /s/  ROBERT M. POWELL              President, Chief Executive Officer                    March 30, 2000
    --------------------------------                  and Director
            Robert M. Powell

         /s/  JERRY D. ORLER                   Vice President - Finance,                         March 30, 2000
    -------------------------------       Chief Financial Officer, Secretary
            Jerry D. Orler                             and Director

           /s/  J.B. SPEED                              Director                                 March 30, 2000
    -------------------------------
           James B. Speed

        /s/  GEORGE R. JACOBS                           Director                                 March 30, 2000
    -------------------------------
          George R. Jacobs

          /s/  JIM L. HANNA                             Director                                 March 30, 2000
    -------------------------------
            Jim L. Hanna

       /s/  ROLAND S. BOREHAM                           Director                                 March 30, 2000
    -------------------------------
         Roland S. Boreham, Jr.
</TABLE>

                                       39

<PAGE>   42


                                INDEX TO EXHIBITS

<TABLE>
<CAPTION>
   EXHIBIT                                                                             SEQUENTIALLY
   NUMBER                                   EXHIBIT                                    NUMBERED PAGE
   ------                                   -------                                    -------------

<S>                    <C>                                                             <C>
     2.1               Asset Purchase Agreement dated as of October 31, 1999
                       between the Company, as buyer, and CARCO Carrier
                       Corporation doing business as CCC Express, Inc., as
                       seller, and CARCO Capital Corporation (incorporated by
                       reference to Exhibit 2.1 to the Company's Report on Form
                       8-K filed on November 15, 1999).

     3.1               Restated and Amended Certificate of Incorporation of the
                       Company (incorporated by reference to Exhibit 3.1 to the
                       Company's Registration Statement on Form S-1,
                       Registration No. 33-45682, filed with the Securities and
                       Exchange Commission on February 13, 1992 [the "Form
                       S-1"]).

     3.2               Bylaws of the Company as currently in effect
                       (incorporated by reference to Exhibit 3.2 to Amendment
                       No. 1 to the Form S-1 filed with the Securities and
                       Exchange Commission on March 19, 1992 ["Amendment No.
                       1"]).

     3.3               Certificate of Amendment to Certificate of Incorporation
                       of the Company filed March 17, 1992 (incorporated by
                       reference to Exhibit 3.3 to Amendment No. 1).

     4.1               Specimen certificate evidencing shares of the Common
                       Stock, $.01 par value, of the Company (incorporated by
                       reference to Exhibit 4.1 to the Form S-1).

     4.2               Fourth Amended and Restated Revolving Credit Agreement
                       dated December 30, 1992, between the Company and Deposit
                       Guaranty National Bank, as Lender (incorporated by
                       reference to Exhibit 4.2 to the Company's annual report
                       on Form 10-K for the year ended December 31, 1992).

     4.3               Fourth Amended and Restated Revolving Note of the Company
                       dated December 30, 1992, in the maximum principal amount
                       of $12,000,000 payable to Deposit Guaranty National Bank,
                       executed in connection with the credit facility filed as
                       Exhibit 4.2 (incorporated by reference to Exhibit 4.3 to
                       the Company's annual report on Form 10-K for the year
                       ended December 31, 1992).

     4.4               Fifth Amendment to Fourth Amended and Restated Revolving
                       Credit Agreement dated December 30, 1996, between the
                       Company and Deposit Guaranty National Bank, as Lender
                       (incorporated by reference to Exhibit 4.5 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1996).

     4.5               Sixth Amendment to Fourth Amended and Restated Revolving
                       Credit Agreement dated December 30, 1997, between the
                       Company and Deposit Guaranty National Bank, as Lender
                       (incorporated by reference to Exhibit 4.5 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1997).
</TABLE>



<PAGE>   43


<TABLE>
<CAPTION>
   EXHIBIT                                                                             SEQUENTIALLY
   NUMBER                                   EXHIBIT                                    NUMBERED PAGE
   ------                                   -------                                    -------------

<S>                    <C>                                                             <C>

     4.6               Sixth Amendment to Fourth Amended and Restated Revolving
                       Note of the Company dated December 30, 1997, in the
                       maximum principal amount of $28,500,000 payable to
                       Deposit Guaranty National Bank, executed in connection
                       with the credit facility filed as Exhibit 4.5
                       (incorporated by reference to Exhibit 4.6 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1997).

     4.7               Seventh Amendment to Fourth Amended and Restated
                       Revolving Credit Agreement dated October 30, 1998,
                       between the Company and Deposit Guaranty National Bank,
                       as Lender (incorporated by reference to Exhibit 4.7 to
                       the Company's annual report on Form 10-K for the year
                       ended December 31, 1998).

     4.8               Seventh Amendment to Fourth Amended and Restated
                       Revolving Note of the Company dated October 30, 1998, in
                       the maximum principal amount of $20,000,000 payable to
                       Deposit Guaranty National Bank, executed in connection
                       with the credit facility filed as Exhibit 4.7
                       (incorporated by reference to Exhibit 4.8 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1998).

     4.9*              Eighth Amendment to Fourth Amended and Restated Revolving              44
                       Credit Agreement dated October 28, 1999, between the
                       Company and Deposit Guaranty National Bank, as Lender.

     4.10*             Eighth Amended and Restated Revolving Note of the Company              46
                       dated October 28, 1999, in the maximum principal amount
                       of $35,000,000 payable to Deposit Guaranty National Bank,
                       executed in connection with the credit facility filed as
                       Exhibit 4.9.

     4.11*             Ninth Amendment to Fourth Amended and Restated Revolving               47
                       Credit Agreement dated December 15, 1999, between the
                       Company and Deposit Guaranty National Bank, as Lender.

     4.12*             Ninth Amended and Restated Revolving Note of the Company               49
                       dated December 15, 1999, in the maximum principal amount
                       of $40,000,000 payable to Deposit Guaranty National Bank,
                       executed in connection with the credit facility filed as
                       Exhibit 4.11.

     4.13              TRAC Lease Commitment Agreement dated January 24, 1996,
                       between the Company and Fleet Credit Corporation, as
                       Lender. (incorporated by reference to Exhibit 4.9 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1995).

     4.14              First Amendment to TRAC Lease Commitment Agreement dated
                       November 13, 1996, between the Company and Fleet Credit
                       Corporation, as Lender (incorporated by reference to
                       Exhibit 4.8 to the Company's annual report on Form 10-K
                       for the year ended December 31, 1997).
</TABLE>



<PAGE>   44


<TABLE>
<CAPTION>
   EXHIBIT                                                                                SEQUENTIALLY
   NUMBER                                   EXHIBIT                                       NUMBERED PAGE
   ------                                   -------                                       -------------

<S>                    <C>
     4.15              Equipment TRAC Lease Commitment Agreement dated November
                       12, 1997 and accepted November 19, 1997, between the
                       Company and Banc One Leasing Corporation, as Lender
                       (incorporated by reference to Exhibit 4.9 to the
                       Company's annual report on Form 10-K for the year ended
                       December 31, 1997).

     4.16              First Amendment dated December 30, 1998, to the Equipment
                       TRAC Lease Commitment Agreement dated November 12, 1997
                       and accepted November 19, 1997, between the Company and
                       Banc One Leasing Corporation, as Lender, as amended by
                       letter dated March 12, 1999 (incorporated by reference to
                       Exhibit 4.12 to the Company's annual report on Form 10-K
                       for the year ended December 31, 1998).

     4.17*             Second Amendment dated December 30, 1998, to the
                       Equipment TRAC Lease Commitment Agreement dated October
                       25, 1999 between the Company and Banc One Leasing
                       Corporation, as Lender.

     4.18              Instruments with respect to long-term debt not exceeding
                       10% of the total assets of the Company have not been
                       filed. The Company agrees to furnish a copy of such
                       instruments to the Securities and Exchange Commission
                       upon request.

     10.1              Employee Stock Option Plan of the Company (incorporated
                       by reference to Exhibit 10.6 to the Form S-1).

     10.2              Nonqualified Stock Option Plan for Nonemployee Directors
                       of the Company (incorporated by reference to Exhibit 10.7
                       to the Form S-1) terminated in January 1997, except with
                       respect to outstanding options.

     10.3              Description of Incentive Compensation Plan for executive
                       officers of the Company (incorporated by reference to
                       Exhibit 10.8 to the Form S-1).

     10.4              1997 Nonqualified Stock Option Plan for Nonemployee
                       Directors of the Company (incorporated by reference to
                       Exhibit 99.1 to the Company's Registration Statement on
                       Form S-8, Registration No. 333-20721, filed with the
                       Securities and Exchange Commission on January 30, 1997).

     21                The Company has no subsidiaries.

     23*               Consent of Ernst & Young LLP, Independent Auditors.                    52

     27.1*             1999 Financial Data Schedule                                           53
</TABLE>

- ----------------------
           * Filed herewith.



<PAGE>   1

Exhibit 4.9

                 EIGHTH AMENDMENT TO FOURTH AMENDED AND RESTATED
                           REVOLVING CREDIT AGREEMENT


     THIS EIGHTH AMENDMENT TO FOURTH AMENDED AND RESTATED REVOLVING CREDIT
AGREEMENT (this "Agreement") is made and entered into as of the 28th day of
October 1999, by and between USA TRUCK, INC., a Delaware corporation (the
"Borrower") and FIRST AMERICAN NATIONAL BANK, operating as DEPOSIT GUARANTY
NATIONAL BANK, a national banking association (the "Lender").

     WHEREAS, pursuant to that certain Fourth Amended and Restated Revolving
Credit Agreement, dated December 30, 1992, as amended July 21, 1993, December
12, 1993, December 22, 1994, and December 28, 1995, December 30, 1996, December
30, 1997 and October 30, 1998 (as further amended, modified and supplemented
from time to time, the "Credit Agreement"), between Borrower, and Lender,
Borrower and Lender entered into certain agreements regarding certain
indebtedness and obligations of Borrower to Lender;

     WHEREAS, Borrower has requested, and Lender has agreed to increase the
Revolving Loan Commitment from $20,000,000 to $35,000,000 in accordance with the
terms hereof, and

     WHEREAS, Borrower and Lender desire to amend the Credit Agreement in
accordance with the terms hereof;

     NOW, THEREFORE, in consideration of the premises, the mutual covenants
herein contained, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Borrower and Lender hereby agree
as follows:

     1. Defined Terms. All capitalized terms used and not otherwise defined
herein (including, without limitation, in the language amendatory to the Credit
Agreement contained herein) shall have the respective meanings given such terms
in the Credit Agreement.

     2. Amendment to Section 1 of the Credit Agreement. The second paragraph of
subsection 1(i) of the Credit Agreement is hereby amended, in its entirety, to
read as follows:

             "The Revolving Note shall (a) be dated the date of the Eighth
        Amendment to this Credit Agreement, (b) be payable to the order of
        Lender, (c) be in the stated principal amount equal to the Revolving
        Loan Commitment, (d) be payable on the Revolving Loan Commitment
        Termination Date, (e) bear interest with respect to the principal amount
        from time to time outstanding at the rate per annum specified in
        subsection 1(iii) hereof, and (f) be substantially in the form of
        Exhibit "A" hereto with blanks completed in conformity herewith."


     3. Amendment to Section 9 of the Credit Agreement. The defined term
"Revolving Loan Commitment" is hereby amended, in its entirety, to read as
follows:

        "'Revolving Loan Commitment' means $35,000,000 at all times during the
     term of this Agreement."

     4. Representations and Warranties. In order to induce Lender to enter into
this Eighth Amendment, the Borrower represents and warrants to Lender as
follows:



                                       1
<PAGE>   2


     A.   All the representations and warranties contained in Section 6 of the
          Credit Agreement, except to the extent they specifically relate to an
          earlier date, are true and correct on and as of the date of this
          Agreement and on the date of execution of this Agreement, as fully as
          if made on each of such dates; and immediately on and after the
          execution of this Agreement, the Borrower shall be in compliance with
          all the terms and provisions set forth in the Credit Agreement, as
          amended by this Agreement, on its part to be observed or performed and
          no Event of Default specified in Section 5 of the Credit Agreement, as
          amended hereby, or any event that upon notice or lapse of time or both
          would constitute such an Event of Default, has occurred and is
          continuing.

     B.   The execution, delivery and performance of this Agreement and the
          Revolving Note (i) have been duly authorized by all requisite
          corporate action, and (ii) will not violate any provision of law, any
          order of any court or other agency of government, the articles of
          incorporation or bylaws of the Borrower, or any indenture, agreement
          or other Instrument to which the Borrower is a party or by which the
          Borrower or any of its properties or assets are bound, or be in
          conflict with, or result in a breach of or constitute (with due notice
          or lapse of time or both) a default under, any such indenture,
          agreement or other instrument, or result in the creation or imposition
          of any lien, charge or encumbrance of any nature whatsoever upon any
          of the properties or assets of the Borrower. Borrower shall deliver to
          Leader concurrently with the execution of this Agreement a Corporate
          Certificate substantially in the form of Exhibit "C" attached hereto.

     C.   Except as is expressly modified and amended hereby, the Credit
          Agreement shall remain in full force and effect in accordance with its
          terms.

     IN WITNESS WHEREOF, the Borrower and Lender have caused this Agreement to
be duly executed and delivered by their authorized representatives, as of the
day and year first above written, but in each case actually on the date
appearing beneath the signature of each party hereto.

                                       USA TRUCK, INC.

                                       By: /s/ Jerry D. Orler
                                           -------------------------------------
                                       Title: CFO & Secretary
                                              ----------------------------------
                                       Execution Date: 10-28-99
                                                       -------------------------

                                       FIRST AMERICAN NATIONAL BANK,
                                       operating as
                                       DEPOSIT GUARANTY NATIONAL BANK

                                       By: Ronald L. Hendrix
                                           -------------------------------------
                                       Title: Senior Vice President
                                              ----------------------------------
                                       Execution Date: 10-28-99
                                                       -------------------------



                                       2

<PAGE>   1


Exhibit 4.10

                   EIGHTH AMENDED AND RESTATED REVOLVING NOTE


$ 35,000,000                                                   October 28, 1999

     FOR VALUE RECEIVED, USA TRUCK, INC., a corporation organized and existing
under the laws of the State of Delaware ("Borrower"), hereby promises to pay to
the order of FIRST AMERICAN NATIONAL BANK, operating as DEPOSIT GUARANTY
NATIONAL BANK ("Lender") the principal sum of THIRTY-FIVE MILLION AND NO/100
DOLLARS ($35,000,000.00) or, if less, the outstanding aggregate principal amount
of all Revolving Loans (as defined in the Revolving Credit Agreement referred to
below) made by Lender to Borrower, on the Revolving Loan Commitment Termination
Date (as defined in the Revolving Credit Agreement), and to pay interest on the
unpaid principal balance of each Revolving Loan from the date of such Revolving
Loan until said principal amount is paid in full, at the times and at the rate
or rates specified in the Revolving Credit Agreement. During the term of this
Revolving Note the Borrower may borrow, repay and reborrow hereunder.

     This Note shall be deemed to be a contract made under the law of the State
of Mississippi and for all purposes shall be governed by and construed in
accordance with the laws of the State of Mississippi.

     Borrower expressly waives any presentment, demand, protest or notice of any
kind in connection with this Note, now or hereafter, required by applicable law.

     Borrower agrees to pay and save Lender harmless from and against liability
for payment of all expenses (including, but not limited to, attorneys' fees and
costs) arising in connection with the enforcement by Lender of its rights under
this Note.

     Payments of principal and interest are to be made in immediately available
funds to, First American National Bank, operating as Deposit Guaranty National
Bank, at its main office in Jackson, Mississippi, in lawful money of the United
States of America.

     This Note is the Revolving Note issued pursuant to that certain Fourth
Amended and Restated Revolving Credit Agreement dated as of December 30, 1992,
as amended July 21, 1993, December 13, 1993, December 22, 1994, December 28,
1995, December 30, 1996, December 30, 1997, October 30, 1998, and of even date
herewith, between Borrower and Lender (as amended, modified and restated from
time to time, the "Revolving Credit Agreement") and is entitled to the benefits
and subject to the terms thereof. This Note constitutes an amendment, extension
and restatement of that certain Fourth Amended and Restated Revolving Note from
Borrower to Lender dated December 30, 1992 in the original stated principal
amount of $12,000,000. This Note is subject to prepayment on the terms and in
the manner set forth in the Revolving Credit Agreement, and this Note may be
declared due and payable prior to its date of maturity in accordance with the
terms thereof. The Revolving Credit Agreement also provides for the making by
Lender to Borrower of revolving loan advance from time to time in ail amount:
not to exceed the U. S. Dollar amount above written and contains provisions for
the acceleration of the maturity hereof upon the terms and conditions therein
specified. This Note is subject to conversion to a term note in accordance with
the terms and provisions of the Revolving Credit Agreement.

     "Business Day" shall mean any day other than a Saturday, Sunday or other
day an which banking institutions in the State of Mississippi are authorized to
close.

                                       USA TRUCK, INC.,  a Delaware Corporation



                                       By: /s/ Jerry D. Orler
                                           -------------------------------------
                                       Title CFO & Secretary
                                             -----------------------------------




                                       1

<PAGE>   1

Exhibit 4.11

                 NINTH AMENDMENT TO FOURTH AMENDED AND RESTATED

                           REVOLVING CREDIT AGREEMENT

     THIS NINTH AMENDMENT TO FOURTH AMENDED AND RESTATED REVOLVING CREDIT
AGREEMENT (this "Agreement") is made and entered into as of the 15th day of
December 1999, by and between USA TRUCK, INC., a Delaware corporation (the
"Borrower"), and FIRST AMERICAN NATIONAL BANK, operating as DEPOSIT GUARANTY
NATIONAL BANK, a national banking association (the "Lender").

     WHEREAS, pursuant to that certain Fourth Amended and Restated Revolving
Credit Agreement, dated December 30, 1992, as amended July 21, 1993, December
12, 1993, December 22, 1994, and December 28, 1995, December 30, 1996, December
30, 1997, October 30, 1998 and October 28, 1999 (as further amended, modified
and supplemented from time to time, the "Credit Agreement"), between Borrower
and Lender, Borrower and Lender entered into certain agreements regarding
certain indebtedness and obligations of Borrower to Lender;

     WHEREAS, Borrower has requested, and Lender has agreed to increase the
Revolving Loan Commitment from $35,000,000 to $40,000,000 in accordance with the
terms hereof, and

     WHEREAS, Borrower and Lender desire to amend the Credit Agreement in
accordance with the terms hereof;

     NOW, THEREFORE, in consideration of the premises, the mutual covenants
herein contained, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Borrower and Lender hereby agree
as follows:

     1. Defined Terms. All capitalized terms used and not otherwise defined
herein (including, without limitation, in the language amendatory to the Credit
Agreement contained herein) shall have the respective meanings given such terms
in the Credit Agreement.

     2. Amendment to Section 1 of the Credit Agreement. The second paragraph of
subsection 1(i) of the Credit Agreement is hereby amended, in its entirety, to
read as follows:

             "The Revolving Note shall (a) be dated the date of the Ninth
        Amendment to this Credit Agreement, (b) be payable to the order of
        Lender, (c) be in the stated principal amount equal to the Revolving
        Loan Commitment, (d) be payable on the Revolving Loan Commitment
        Termination Date, (e) bear interest with respect to the principal amount
        from time to time outstanding at the rate per annum specified in
        subsection 1(iii) hereof, and (f) be substantially in the form of
        Exhibit A hereto, with blanks completed in conformity herewith."

     3. Amendment to Section 9 of the Credit Agreement. Section 4C of the Credit
Agreement is hereby amended, in its entirety, to read as follows:

         Tangible Net Worth. Permit Tangible Net. Worth of Borrower and its
         Subsidiaries (i) to be less than $45,000,000, and (ii) at the end of
         each fiscal quarter thereafter, be less than the sum of (y) 50% of net
         profits after taxes for such fiscal quarter determined in accordance
         with GAAP, plus (z) the minimum amount of Tangible Net Worth for the
         immediately preceding fiscal quarter as determined pursuant to this
         Section 4C. For purposes of calculation hereof, the Tangible Net Worth
         requirement set forth in this Section 4C shall not be reduced because
         of the failure of Borrower to have net profits for any fiscal quarter.

     4. Amendment to Section 9 of the Credit Agreement. The defined term
"Revolving Loan Commitment" is hereby amended, in its entirety, to read as
follows:



                                       1
<PAGE>   2


        "'Revolving Loan Commitment' means $40,000,000 at all times during the
     term of this Agreement."

     5. Representations and Warranties. In order to induce Lender to enter into
this Ninth Amendment, the Borrower represents and warrants to Lender as follows:

     A.   All the representations and warranties contained in Section 6 of the
          Credit Agreement, except to the extent they specifically relate to an
          earlier date, are true and correct on and as of the date of this
          Agreement and on the date of execution of this Agreement, as fully as
          if made on each of such dates; and immediately on and after the
          execution of this Agreement, the Borrower shall be in compliance with
          all the terms and provisions set forth in the Credit Agreement, as
          amended by this Agreement, on its part to be observed or performed and
          no Event of Default specified in Section 5 of the Credit Agreement, as
          amended hereby, or any event that upon notice or lapse of time or both
          would constitute such an Event of Default, has occurred and is
          continuing.

     B.   The execution, delivery and performance of this Agreement and the
          Revolving Note (i) have been duly authorized by all requisite
          corporate action, and (ii) will not violate any provision of law, any
          order of any court or other agency of government, the articles of
          incorporation or bylaws of the Borrower, or any indenture, agreement
          or other instrument to which the Borrower is a party or by which the
          Borrower or any of its properties or assets are bound, or be in
          conflict with, or result in a breach of or constitute (with due notice
          or lapse of time or both) a default under, any such indenture,
          agreement or other instrument, or result in the creation or imposition
          of any lien, charge or encumbrance of any nature whatsoever upon any
          of the properties or assets of the Borrower. Borrower shall deliver to
          Lender concurrently with the execution of this Agreement a Corporate
          Certificate substantially in the form of Exhibit "G" attached hereto.

     C.   Except as is expressly modified and amended hereby, the Credit
          Agreement shall remain in full force and effect in accordance with its
          terms.

     IN WITNESS WHEREOF, the Borrower and Lender have caused this Agreement to
be duly executed and delivered by their authorized representatives, as of the
day and year first above written, but in each case actually on the date
appearing beneath the signature of each party hereto.

                                       USA TRUCK, INC.

                                       By: /s/ Jerry D. Orler
                                           -------------------------------------
                                       Title: CFO and Secretary
                                              ----------------------------------
                                       Execution Date: 12-15-99
                                                       -------------------------

                                       FIRST AMERICAN NATIONAL BANK,
                                       operating as
                                       DEPOSIT GUARANTY NATIONAL BANK

                                       By: /s/ Ron Hendrix
                                           -------------------------------------
                                       Title: SVP
                                              ----------------------------------
                                       Execution Date: 12-16-99
                                                       -------------------------





                                       2

<PAGE>   1
Exhibit 4.12

                    NINTH AMENDED AND RESTATED REVOLVING NOTE

$ 40,000,000                                                    December , 1999


     FOR VALUE RECEIVED, USA TRUCK, INC., a corporation organized and existing
under the laws of the State of Delaware ("Borrower") I hereby promises to pay to
the order of FIRST AMERICAN NATIONAL BANK, operating as DEPOSIT GUARANTY
NATIONAL BANK ("Lender") the principal sum of FORTY MILLION AND NO/100 DOLLARS
($40,000,000.00) or, if less, the outstanding aggregate principal amount of all
Revolving Loans (as defined in the Revolving Credit Agreement referred to below)
made by Lender to Borrower, on the Revolving Loan Commitment Termination Date,
(as defined in the Revolving Credit Agreement), and to pay interest on the
unpaid principal balance of each Revolving Loan from the date of such Revolving
Loan, until said principal amount is paid in full, at the times and at the rate
or rates specified in the Revolving Credit Agreement. During the term of this
Revolving Note the Borrower may borrow, repay and reborrow hereunder.

     This Note shall be deemed to be a contract made under the law of the State
of Mississippi and for all purposes shall be governed by and construed in
accordance with the laws of the State of Mississippi.

     Borrower expressly waives any presentment, demand, protest or notice of any
kind in connection with this Note, now or hereafter, required by applicable law.

     Borrower agrees to pay and save Lender harmless from and against liability
for payment of all expenses (including, but not limited to, attorneys, fees and
costs) arising in connection with the enforcement by Lender of its rights under
this Note.

     Payments of principal and interest are to be made in immediately available
funds to, First American National Bank, operating as Deposit Guaranty National
Bank, at its main office in Jackson, Mississippi, in lawful money of the United
States of America.

     This Note is the Revolving Note issued pursuant to that certain Fourth
Amended and Restated Revolving Credit Agreement dated as of December 30, 1992,
as amended July 21, 1993, December 13, 1993, December 22, 1994, December 28,
1995, December 30, 1996, December 30, 1997, October 30, 1998, October 28, 1999
and of even date herewith, between Borrower and Lender (as amended, modified and
restated from time to time, the "Revolving Credit Agreement") and is entitled to
the benefits and subject to the terms thereof. This Note constitutes an
amendment, extension and restatement of that certain Fourth Amended and Restated
Revolving Note from Borrower to Lender dated December 30, 1992 in the original
stated principal amount of $12,000,000. This Note is subject to prepayment on
the terms and in the manner set forth in the Revolving Credit Agreement, and
this Note may be declared due and payable prior to its date of maturity in
accordance with the terms thereof. The Revolving Credit Agreement also provides
for the making by Lender to Borrower of revolving loan advance from time to time
in an amount not to exceed the U. S. Dollar amount above written and contains
provisions for the acceleration of the maturity hereof upon the terms and
conditions therein specified. This Note is subject to conversion to a term note
in accordance with the terms and provisions of the Revolving Credit Agreement.

     "Business Day" shall mean any day other than a Saturday, Sunday or other
day on which banking institutions in the State of Mississippi are authorized to
close.

                                       USA TRUCK, INC., a Delaware Corporation


                                       By: Jerry D. Orler
                                           -------------------------------------
                                       Title: CFO & Secretary
                                              ----------------------------------




                                       1

<PAGE>   1


Exhibit 4.17

                            Banc One Leasing Corporation        Tel 800 334 5422
                            1111 Polaris Parkway, Suite A3
                            Columbus OH  43240

Jerry Orler                                                     October 25, 1999
Chief Financial Officer
USA Truck, Inc.
3200 Industrial Park
Van Buren, AR  72956

Dear Mr. Orler:

We are pleased to confirm that Banc One Leasing Corporation (LESSOR) has
committed to an additional Lease Line of Credit not to exceed $6,000,000.00 to
USA Truck, Inc. (LESSEE) for the type(s) of equipment as set forth below:

                 New and Used Freightliner and Navistar Tractors

This Commitment will expire October 12, 2000, subject to the following
conditions:

     1.   The amount advanced shall not exceed the amount committed.

     2.   In LESSOR'S sole judgement, there shall not have been a material
          adverse change in the financial condition or business of LESSEE or any
          guarantor.

     3.   There shall not have been a change in the Internal Revenue Code of
          1986 or any regulation thereunder, which in LESSOR'S sole judgement
          would adversely affect the economics to LESSOR of the transaction.

     4.   At the end of each fiscal quarter of LESSEE, LESSEE'S tangible net
          worth shall be no less than $18,553,000 plus an amount equal to 50% of
          its annual after tax profits for each fiscal year subsequent to March
          31, 1993. All financial covenant terms and definitions per generally
          accepted accounting principles.

     5.   Used tractors will be subject to LESSOR approval.

     6.   Successful acquisition of CARCO Carrier Corporation.





                                       1
<PAGE>   2


USA Truck, Inc.
October 25, 1999
Page 2

If the Lease Line of Credit covered by this Commitment is not funded by October
12, 2000, this Commitment shall expire.

The details of the particular Equipment Schedules funded under this Lease Line
of Credit may vary, as LESSOR may deem necessary in its sole judgement on such
items as:

1.   Term of transaction

2.   Rental rate factor

3.   Documentation required

The Commitment is subject to the terms and conditions outlined herein, contained
in each Equipment Schedule, and in the Master Lease Agreement. By execution of
this letter, you will be agreeing to these terms. If this Commitment Letter is
not received within 15 days of the above date, this Commitment is withdrawn.

On behalf of Banc One Leasing Corporation, please accept my thanks for the
opportunity to be of service. Should you have any questions, please contact
Shane Taylor at (214) 290-2304 or David Hicks at (615) 369-0650.


Sincerely,

/s/Donald C. Boodey

Donald C.Boodey
Assistant Vice President


Acknowledged and agreed this 25 day of October, 1999

USA Truck, Inc.
- -----------------------------------
LESSEE

By: /s/ Jerry D. Orler
   --------------------------------
Title: CFO & SEC
      -----------------------------




                                       2

<PAGE>   1

Exhibit 23


               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent to the incorporation by reference in the Registration Statements
(Form S-8 Nos. 33-48027, 333-20721 and 333-40317) pertaining to the Employee
Stock Option Plan, the Nonqualified Stock Option Plan for Nonemployee Directors
and the Employee Stock Purchase Plan, respectively of our report dated January
18, 2000 with respect to the financial statements and schedule of USA Truck,
Inc. included in this Annual Report (Form 10-K) for the year ended December 31,
1999.


                                       ERNST & YOUNG LLP

Little Rock, Arkansas
March 29, 2000




                                       1

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
REGISTRANT'S REPORT ON FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 1999 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                       2,145,707
<SECURITIES>                                         0
<RECEIVABLES>                               32,428,251
<ALLOWANCES>                                   269,150
<INVENTORY>                                    301,907
<CURRENT-ASSETS>                            39,449,184
<PP&E>                                     186,011,130
<DEPRECIATION>                              43,873,074
<TOTAL-ASSETS>                             182,039,688
<CURRENT-LIABILITIES>                       28,277,285
<BONDS>                                              0
                                0
                                          0
<COMMON>                                        93,870
<OTHER-SE>                                  70,108,176
<TOTAL-LIABILITY-AND-EQUITY>               182,039,688
<SALES>                                    166,363,356
<TOTAL-REVENUES>                           166,363,356
<CGS>                                                0
<TOTAL-COSTS>                              150,526,684
<OTHER-EXPENSES>                              (31,885)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                           1,655,558
<INCOME-PRETAX>                             14,212,999
<INCOME-TAX>                                 5,571,497
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 8,641,502
<EPS-BASIC>                                       0.93
<EPS-DILUTED>                                     0.92



</TABLE>


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