EXHIBIT 31.1


                  CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER
            PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002


I, ROBERT W. WEAVER, President and Chief Executive Officer, certify that:

I  have  reviewed  this  quarterly  report on Form 10-Q of P.A.M. TRANSPORTATION
SERVICES, INC., a Delaware corporation (the "registrant");

Based  on  my  knowledge, this report does not contain any untrue statement of a
material  fact or omit to state a material fact necessary to make the statements
made,  in  light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this quarterly report;

Based on my knowledge, the financial statements, and other financial information
included  in  this report, fairly present in all material respects the financial
condition,  results  of  operations  and cash flows of the registrant as of, and
for, the periods presented in this report;

The  registrant's  other  certifying  officers  and  I  are  responsible  for
establishing  and  maintaining disclosure controls and procedures (as defined in
Exchange  Act  Rules  13a-15(e)  and  15d-15(e))  for  the  registrant and have:

 (a)   Designed such disclosure controls and procedures, or caused such
       disclosure controls and procedures to be designed under our
       supervision, to ensure that material information relating to the
       registrant, including its consolidated subsidiaries, is made known
       to us by others within those entities, particularly during the
       period in which this report is being prepared;

 (b)   Evaluated  the effectiveness of the registrant's disclosure controls
       and  procedures  and  presented  in  this  report  our conclusions
       about the effectiveness of the disclosure controls and procedures
       as of the end of the period covered by this report based on such
       evaluation; and

 (c)   Disclosed  in  this report any change in the registrant's internal
       control over financial reporting that occurred during the registrant's
       most recent fiscal quarter (the registrant's fourth fiscal quarter
       in the case of an annual report) that has materially affected, or is
       reasonably likely to materially affect, the registrant's internal
       control over financial reporting; and

The  registrant's other certifying officers and I have disclosed, based on
our  most  recent evaluation of internal control over financial reporting,
to  the  registrant's auditors and the audit committee of the registrant's
board of directors (or persons performing the equivalent functions):

 (a)   All significant deficiencies and material weaknesses in the design
       or operation of internal control over financial reporting which are
       reasonably likely to adversely affect the registrant's ability to
       record, process, summarize and report financial information; and

 (b)   Any fraud, whether or not  material, that involves management or
       other employees who have a significant role in the registrant's
       internal control over financial reporting.


Date:  August 5, 2003

                                   By: /s/ Robert W. Weaver
                                   ---------------------------------
                                   Robert W. Weaver
                                   President and Chief Executive Officer
                                   (principal executive officer)