EXHIBIT 10.14SIXTH AMENDMENT TO CREDIT AGREEMENT     THIS SIXTH AMENDMENT TO CREDIT AGREEMENT (this “Sixth Amendment”), dated as of July31, 2007, by and among the lender listed on the signature pages hereof as Lender (the“Lender”), DYNAMEX INC., a Delaware corporation (the “Borrower”), DYNAMEXOPERATIONS EAST, INC., a Delaware corporation, DYNAMEX OPERATIONS WEST, INC., a Delawarecorporation, DYNAMEX CANADA HOLDINGS, INC., a Delaware corporation, DYNAMEX PROVINCIAL COURIERS,INC., a Delaware corporation, DYNAMEX FRANCHISE HOLDINGS, INC., a Delaware corporation, DYNAMEXDOMESTIC FRANCHISING, INC., a Delaware corporation, DYNAMEX FLEET SERVICES, INC., a Delawarecorporation, BANK OF AMERICA, N.A., in its capacity as a lender (the “Lender”), and BANK OFAMERICA, N.A., as administrative agent for itself and the Lender (in such capacity, the“Administrative Agent”).BACKGROUND     A. The Borrower, the other Loan Parties (as defined in the Credit Agreement defined below),the Lender and the Administrative Agent are parties to that certain Credit Agreement, dated as ofMarch 2, 2004, as amended by that certain First Amendment to Credit Agreement, dated as of April22, 2005, that certain Second Amendment to Credit Agreement, dated as of November 10, 2005, thatcertain Third Amendment to Credit Agreement, dated as of December 23, 2005, that certain FourthAmendment to Credit Agreement, dated as of July 21, 2006, and that certain Fifth Amendment, datedas of October 5, 2006 (said Credit Agreement, as amended, the “Credit Agreement”; the termsdefined in the Credit Agreement and not otherwise defined herein shall be used herein as defined inthe Credit Agreement).     B. The Borrower has requested an amendment to the Credit Agreement.     C. The Lender and the Administrative Agent hereby agree to such request, subject to the termsand conditions set forth herein.     NOW, THEREFORE, in consideration of the covenants, conditions and agreements hereafter setforth, and for other good and valuable consideration, the receipt and adequacy of which are allhereby acknowledged, the parties hereto covenant and agree as follows:     1. AMENDMENT. Section 9.4 of the Credit Agreement is hereby amended byamending clause (g) thereof to read as follows:     (g) the Borrower may make Treasury Stock Purchases not to exceed $20,000,000 inaggregate amount during any fiscal year.     2. REPRESENTATIONS AND WARRANTIES TRUE; NO EVENT OF DEFAULT. By its execution anddelivery hereof, the Borrower represents and warrants that, as of the date hereof, after givingeffect to the amendment provided for in Section 1 of this Sixth Amendment:     (a) the representations and warranties contained in the Credit Agreement and the other LoanDocuments are true and correct on and as of the date hereof as made on and as of such date;
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     (b) no event has occurred and is continuing which constitutes a Default or an Event ofDefault;     (c) (i) the Borrower has full power and authority to execute and deliver this Sixth Amendment,(ii) this Sixth Amendment has been duly executed and delivered by the Borrower, and (iii) thisSixth Amendment and the Credit Agreement, as amended hereby, constitute the legal, valid andbinding obligations of the Borrower, enforceable in accordance with their respective terms, exceptas enforceability may be limited by applicable debtor relief laws and by general principles ofequity (regardless of whether enforcement is sought in a proceeding in equity or at law) and exceptas rights to indemnity may be limited by federal or state securities laws;     (d) neither the execution, delivery and performance of this Sixth Amendment or the CreditAgreement, as amended hereby, nor the consummation of any transactions contemplated herein ortherein, will violate any Law or conflict with any organizational documents of the Borrower, or anyindenture, agreement or other instrument to which the Borrower or any of its property is subject;and     (e) no authorization, approval, consent, or other action by, notice to, or filing with, anygovernmental authority or other Person (including the Board of Directors of the Borrower) notpreviously obtained is required for the execution, delivery or performance by the Borrower of thisSixth Amendment.     3. CONDITIONS OF EFFECTIVENESS. This Sixth Amendment shall be effective as of July31, 2007, upon satisfaction of the following conditions:     (a) the representations and warranties set forth in Section 2 of this Sixth Amendment shall betrue and correct;     (b) the Administrative Agent shall have received counterparts of this Sixth Amendment executedby the Lender;     (c) the Administrative Agent shall have received counterparts of this Sixth Amendment executedby the Borrower and acknowledged by each other Loan Party; and     (d) the Administrative Agent shall have received in form and substance satisfactory to theAdministrative Agent, such other documents, certificates and instruments as the Lenders shallrequire.     4. LOAN PARTY’S ACKNOWLEDGMENT. By signing below, each Loan Party (i) acknowledges,consents and agrees to the execution, delivery and performance by the Borrower of this SixthAmendment, (ii) acknowledges and agrees that its obligations in respect of the Loan Documents towhich it is a party are not released, diminished, waived, modified, impaired or affected in anymanner by this Sixth Amendment, or any of the provisions contemplated herein, (iii) ratifies andconfirms its obligations under the Loan Documents to which it is a party, and (iv) acknowledges andagrees that it has no claim or offsets against, or defenses or counterclaims to, its obligationsunder the Loan Documents to which it is a party.     5. **RELEASE****. IN CONSIDERATION OF THE LENDER’S EXECUTION OF THIS SIXTH AMENDMENT, EACHOF THE LOAN PARTIES, IN EACH CASE ON BEHALF OF ITSELF AND EACH OF THEIR SUCCESSORS AND ASSIGNS(COLLECTIVELY, THE “RELEASORS”), DOES VOLUNTARILY AND KNOWINGLY RELEASE AND FOREVER DISCHARGE EACHLENDER, EACH EXITING LENDER AND ADMINISTRATIVE AGENT AND THEIR RESPECTIVE PREDECESSORS, OFFICERS,DIRECTORS, EMPLOYEES, AGENTS, SUCCESSORS AND ASSIGNS (EACH, A “RELEASED PARTY”) FROM ALL POSSIBLECLAIMS, DEMANDS, ACTIONS, CAUSES OF ACTION, DAMAGES, COSTS, EXPENSES, AND LIABILITIES WHATSOEVER,KNOWN OR UNKNOWN, ANTICIPATED OR UNANTICIPATED, SUSPECTED OR UNSUSPECTED, FIXED, CONTINGENT, ORCONDITIONAL, AT LAW OR IN EQUITY, ARISING ON OR BEFORE THE DATE THIS SIXTH AMENDMENT IS EXECUTED,WHICH BORROWER OR ANY LOAN PARTY MAY NOW HAVE AGAINST ANY RELEASED PARTY, IF ANY, AND IRRESPECTIVEOF WHETHER ANY SUCH CLAIMS ARISE OUT OF CONTRACT, TORT, VIOLATION OF LAW OR REGULATIONS, OR**
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**OTHERWISE, AND ARISINGFROM ANY “OBLIGATIONS”, INCLUDING, WITHOUT LIMITATION, ANY CONTRACTING FOR, CHARGING, TAKING,RESERVING, COLLECTING OR RECEIVING INTEREST IN EXCESS OF THE HIGHEST LAWFUL RATE APPLICABLE, THEEXERCISE OF ANY RIGHTS AND REMEDIES UNDER THE CREDIT AGREEMENT OR OTHER LOAN DOCUMENTS, ANDNEGOTIATION FOR AND EXECUTION OF THIS SIXTH AMENDMENT.**     6. REFERENCE TO THE CREDIT AGREEMENT.     (a) Upon and during the effectiveness of this Sixth Amendment, each reference in the CreditAgreement to “this Agreement”, “hereunder”, or words of like import shall mean and be a referenceto the Credit Agreement, as affected by this Sixth Amendment.     (b) Except as expressly set forth herein, this Sixth Amendment shall not by implication orotherwise limit, impair, constitute a waiver of, or otherwise affect the rights or remedies of theAdministrative Agent or the Lenders under the Credit Agreement or any of the other Loan Documents,and shall not alter, modify, amend, or in any way affect the terms, conditions, obligations,covenants, or agreements contained in the Credit Agreement or the other Loan Documents, all ofwhich are hereby ratified and affirmed in all respects and shall continue in full force and effect.     7. COSTS AND EXPENSES. The Borrower shall be obligated to pay the costs and expensesof the Administrative Agent in connection with the preparation, reproduction, execution anddelivery of this Sixth Amendment and the other instruments and documents to be delivered hereunder.     8. EXECUTION IN COUNTERPARTS. This Sixth Amendment may be executed in any number ofcounterparts and by different parties hereto in separate counterparts, each of which when soexecuted and delivered shall be deemed to be an original and all of which when taken together shallconstitute but one and the same instrument. For purposes of this Sixth Amendment, a counterparthereof (or signature page thereto) signed and transmitted by any Person party hereto to theAdministrative Agent (or its counsel) by facsimile machine, telecopier or electronic mail is to betreated as an original. The signature of such Person thereon, for purposes hereof, is to beconsidered as an original signature, and the counterpart (or signature page thereto) so transmittedis to be considered to have the same binding effect as an original signature on an originaldocument.     9. GOVERNING LAW; BINDING EFFECT. This Sixth Amendment shall be governed by andconstrued in accordance with the laws of the State of Texas (without giving effect to conflict oflaws) and the United States of America, and shall be binding upon the Borrower and each Lender andtheir respective successors and assigns.     10. HEADINGS. Section headings in this Sixth Amendment are included herein forconvenience of reference only and shall not constitute a part of this Sixth Amendment for any otherpurpose.     11. **ENTIRE AGREEMENT****. THE CREDIT AGREEMENT, AS AMENDED BY THIS SIXTH AMENDMENT, ANDTHE OTHER LOAN DOCUMENTS REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AS TO THE SUBJECT MATTERTHEREIN AND HEREIN AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENTORAL AGREEMENTS BETWEEN THE PARTIES.**
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     IN WITNESS WHEREOF, the parties hereto have executed this Sixth Amendment as of the date firstabove written.      DYNAMEX INC.