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  Charles G.  Peterson  and Sandra
Peterson,  his wife ("Chuck and Sandy"),  residents of the State of Florida,  as
well as Chad Peterson and Jason  Peterson  ("Chad and Jason"),  residents of the
States of Iowa and North  Carolina,  respectively.  Chuck and Sandy,  as well as
Chad  and  Jason  are  sometimes  hereinafter  collectively  referred  to as the
"Petersons").

         WHEREAS,  Direct Transit,  Inc. ("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,  Charles G.  Peterson is and has been  President  and the sole
shareholder of DTI for the entire corporate existence and has used his expertise
in  developing  DTI's  business and possesses  knowledge in skills  necessary to
operate DTI's business;

         WHEREAS,  Sandra  Peterson  as well as Chad and  Jason  are  intimately
familiar with the operations of DTI's business;

         WHEREAS,  the  value  of the  Assets  to Swift  would be  substantially
diminished if the Petersons  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  pursuant to Section 5.1.14
of the  Purchase  Agreement  as a  condition  precedent  to  performance  of 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 the
Petersons  under this  Agreement,  the Petersons will receive upon the Effective
Date, the sum of $1,045,000.
                                        1

         4. Noncompetition.  During any time within the period commencing on the
Effective Date and ending on the eighth anniversary thereafter,  either directly
or indirectly,  or by affiliation with any person, firm, corporation,  entity or
business (whether as a partner, member, officer,  director,  manager,  employee,
agent, consultant or otherwise):

                  (a) Charles and Sandra,  jointly and  severally,  covenant and
agree not to engage in the business of providing motor carrier or transportation
logistic services from any location within the geographical United States; and

                  (b) The Petersons,  jointly and severally,  covenant and agree
not to

                           (i) solicit or receive  any current or past  customer
or  prospect  of DTI,  existing  as of the  Effective  Date,  for the purpose of
providing transportation services to such customer or prospect; and

                           (ii) hire any  person  employed  by Swift on or after
the Effective Date or induce any such person to leave the employ of Swift.

         Swift agrees to notify Chad and Jason, at least  quarterly,  during the
term of this Agreement of any customers  previously  serviced by DTI which Swift
no longer services and upon receipt of such notice,  the  restrictive  covenants
contained in this Section 4, solely with respect to the  customers  set forth in
such notice, shall no longer apply as to Chad and Jason.

         In  consideration  of the monies paid to the Petersons as well as other
good and valuable consideration,  the Petersons agree that this Agreement is not
and shall not be considered  an executory  contract in the event that any of the
Petersons file for relief under any Chapter of the Bankruptcy Code nor shall any
of the  Petersons  seek  discharge of the personal  covenants  contained in this
Agreement.  Furthermore,  the  parties  agree  that in the event that any of the
Petersons  file  for  bankruptcy,  and  if  any of  the  Petersons  breach  this
Agreement,  the Petersons agree that Swift shall be entitled to seek relief from
the automatic stay  provision of the Bankruptcy  Code and agree to support Swift
in any application for relief from such automatic stay.

         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.  Except  with  respect  to any matter as shall  properly  be before the
jurisdiction of any United States Bankruptcy Court, the Petersons consent 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 the Petersons (or any one of
them) breach this  Agreement  and fail to cure such breach within ten days after
written  notice  thereof is given to the  breaching  party,  Swift  may,  at its
option, seek monetary damages and/or obtain injunctive or other equitable relief
to prevent the further breach of this Agreement.
                                        2

         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 Purchase  Agreement to the addresses of
the parties set forth below or such other address as a party may designate  from
time to time by notice to the other parties.

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

CHARLES G. PETERSON                     SWIFT TRANSPORTATION CO., INC.


By: /s/ Charles G. Peterson             By: /s/ William F. Riley III
- -------------------------------------      -------------------------------------
 Title:                                  Title: Executive Vice President
       ------------------------------          ---------------------------------

Date:    4-4-97                         Date:     4-8-97
     ------------------                       ------------------

                                              Address:  2200 S. 75th Avenue
                                                 Phoenix, Arizona 85043
SANDRA PETERSON


By: /s/ SANDRA PETERSON
   --------------------------
 Title:
       ----------------------

Date:     4-4-97
     --------------------

CHAD PETERSON

By: /s/ CHAD PETERSON
   --------------------------
 Title:
       ----------------------

Date:     4-4-97
     --------------------


JASON PETERSON


By: /s/ JASON PETERSON
   --------------------------
 Title:
       ----------------------

Date:     4-4-97
     --------------------
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