NONCOMPETITION AGREEMENT


         This  Noncompetition  Agreement  ("Agreement"),  effective  as  of  the
Effective  Date, as defined below,  is made by and between Swift  Transportation
Co., Inc., or its assignees ("Swift") and Direct Transit, Inc. ("DTI").

         WHEREAS,  DTI,  an  Iowa  corporation,  engaged  in the  motor  carrier
business,  concurrent with the execution of this Agreement,  has entered into an
Asset  Purchase  Agreement  with Swift dated  February  20, 1997 (the  "Purchase
Agreement"),  under which Swift will acquire  certain  assets of DTI,  including
good will, customer lists, and customer contracts (the "Assets");

         WHEREAS,  the  value  of the  Assets  to Swift  would be  substantially
diminished  if DTI  were  free  to  compete  with  Swift  or  assist  others  in
competition with Swift once the purchase of the Assets is completed; and

         WHEREAS,   Swift  has  required  this   Agreement  as  a  condition  to
performance to its obligations under the Purchase Agreement.

         NOW,  THEREFORE,  in  consideration  of  the  above  recitals  and  the
following covenants, the parties hereby agree as follows:

         1. Term.  This  Agreement  shall  commence on the  Effective  Date,  as
defined  below,  and shall  continue  for eight  (8)  years  thereafter,  unless
terminated earlier as provided elsewhere in this Agreement.

         2. Effective Date. This Agreement shall not become  effective until the
Closing Date of the Purchase Agreement, and it is contingent upon the closing of
such transaction.

         3. Consideration.  As complete consideration for the obligations of DTI
under this  Agreement,  DTI will receive upon the Effective Date, the sum of One
Hundred  Thousand  Dollars  ($100,000) which is part of the Purchase Price to be
paid for the Assets under the Purchase Agreement.

         4.  Noncompetition.  DTI  shall  not,  at any time  within  the  period
commencing  on  the  Effective  Date  and  ending  on  the  eighth   anniversary
thereafter,  directly or indirectly,  or by affiliation  with any person,  firm,
corporation, entity or business (whether as a partner, officer, director, agent,
consultant or otherwise);  (a) engage in the business of providing motor carrier
or transportation  logistics  services from any location within the geographical
United  States or the  soliciting of customers  using such  services  within the
United States, regardless of whether those customers may be located; (b) solicit
or receive any such business from any customer or prospect of DTI existing as of
the Closing Date of the Purchase Agreement; or (c) hire any person
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employed  by Swift on or after the  Effective  Date or induce any such person to
leave the employ of Swift.

                  DTI  shall  not  at  any  time  or  at  any  place,   divulge,
communicate,  use to the  detriment  of Swift or for the  benefit  of any  other
person or persons,  or misuse in any way, any  confidential  information,  trade
secrets or other nonpublic information about or effecting DTI's business.

         5. Governing Law and Jurisdiction.  This Agreement shall be governed by
and  interpreted  and  enforced  in  accordance  with the  laws of the  State of
Arizona.  DTI  consents  to the  jurisdiction  and venue of any state or federal
court located in Maricopa County, Arizona, with respect to any action, either in
tort or contract, arising from this Agreement.

         6. Default and Remedies.  In the event that DTI breaches this Agreement
and fails to cure such breach  within ten days after written  notice  thereof is
given to DTI,  Swift may, at its option,  seek  monetary  damages  and/or obtain
injunctive  or other  equitable  relief to prevent  the  further  breach of this
Agreement.

         7.  Attorney's  Fees.  In the event  that suit is  brought  in order to
enforce any provision of this Agreement,  the prevailing party shall be entitled
to recover their costs and reasonable  attorneys fees incurred in enforcing this
Agreement.

         8. Notice.  All notices under this Agreement  shall be sent in the same
manner as  provided  in  Section  8.8 of the  Asset  Purchase  Agreement  to the
addresses of the parties set forth in the Asset Purchase Agreement.

         IN WITNESS  WHEREOF,  the parties to this  Agreement have executed this
Agreement as of the date set forth below.

DIRECT TRANSIT, INC.                    SWIFT TRANSPORTATION CO., INC.



By: /s/ Mark E. Ferdig                  By: /s/ William F. Riley III            
   -------------------------------         -------------------------------------
 Title: Vice President                   Title: Executive Vice President        
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Date:     4/8/97                        Date:     4/8/97                        
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