EXHIBIT 99.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

This certification is provided pursuant to Section 906 of the Sarbanes-Oxley Act
of  2002,  18 U.S.C. 1350, and accompanies the quarterly report on Form 10-Q for
the  quarter  ended  March  31,  2003 (the "Form 10-Q") of P.A.M. Transportation
Services, Inc. (the "Issuer").

I,  Robert  W.  Weaver,  President  and  Chief  Executive Officer of the Issuer,
certify that:

(i)     The  Form  10-Q fully complies with the requirements of Section 13(a) or
Section  15(d)  of  the  Securities  Exchange  Act  of 1934 (15 U.S.C. 78m(a) or
78o(d); and

(ii)     The  information  contained  in  the  Form 10-Q fairly presents, in all
material  respects,  the  financial  condition  and results of operations of the
Issuer.



Dated:   May 12, 2003              By: /s/ Robert W. Weaver
                                   -----------------------------------------
                                   Robert W. Weaver
                                   President and Chief Executive Officer
                                   (chief executive officer)









A  signed  original  of  this written statement required by Section 906 has been
provided  to P.A.M. Transportation Services, Inc. and will be retained by P.A.M.
Transportation  Services,  Inc.  and  furnished  to  the Securities and Exchange
Commission or its staff upon request.