1 EXHIBIT 23.1 INDEPENDENT AUDITORS CONSENT We consent to the incorporation by reference in this Registration Statement of Dynamex Inc. on Form S-8 of our report dated September 19, 1997 (except for Note 3(b) which is as of September 29, 1997), appearing in the Annual Report on Form 10-K of Dynamex Inc. for the year ended July 31, 1997. DELOITTE & TOUCHE Toronto, Canada October 27, 1997