CONSULTING AGREEMENT

     This  Consulting  Agreement  (this  "Agreement")  is entered into as of the
13th day of March, 1999 ("Effective  Date"), by and between Knight  Acquisition
Corporation,  an Arizona corporation ("KAC"),  Knight  Transportation,  Inc., an
Arizona corporation  ("Knight"),  and Bobby R. Ellis (the "Consultant").  Knight
and KAC are hereinafter referred to as the "Corporation."

                                    RECITALS:

     A. Consultant, together with his spouse, owned 100% of the shares of Action
Delivery  Service,  Inc.  ("ADS"),  a Texas  corporation,  and Action  Warehouse
Services, Inc. ("AWS"), a Texas corporation (collectively, "Action"). All of the
assets of ADS and AWS were purchased,  and certain  identified  liabilities were
assumed,  by the  Corporation  as  evidenced  by  that  certain  Asset  Purchase
Agreement dated March 13, 1999.

     B. Corporation desires to retain Consultant as an independent contractor to
provide  consulting  services to  Corporation  as  provided  in this  Agreement.
Consultant is willing to provide such services under the terms and conditions as
set forth in this Agreement.

                                   AGREEMENT:

     1. TERM OF AGREEMENT.  Unless  earlier  terminated  in accordance  with the
provisions  of  Section  8, the term of this  Agreement  shall  commence  on the
Effective Date and shall expire twenty-four (24) months from the Effective Date.

     2. SCOPE OF  SERVICES.  Corporation  and  Consultant  acknowledge  that the
duties of Consultant will be that of a marketing consultant to the Corporation.

     3. CORPORATION'S RULES.  Consultant shall comply with all reasonable rules,
regulations  and policies  adopted by Corporation  from time to time relating to
the business operations of Corporation.

     4.  CONSULTANT'S  GENERAL  DUTIES.  Consultant  shall perform the following
services for  Corporation:  (i) assist the Corporation  with respect to customer
transition matters, including, without limitation, the retention of all existing
customers of ADS and AWS and the Corporation's retention of key employees;  (ii)
work closely with Knight's  Division  Manager to effect a smooth  transition for
Action's former  employees and customers from Action to the  Corporation;  (iii)
assist the Corporation in establishing  business  relations with all of Action's
vendors,  including  any  fuel  vendors;  and (iv)  assist  the  Corporation  in
attracting  and  retaining  new  customers  to be serviced by the  Corporation's
Corsicana, Texas facility. Corporation agrees that it

shall timely and properly  perform all of its obligations in connection with and
necessary  for  Consultant's  duties  hereunder,   as  reasonably  requested  by
Consultant,  including attendance at and participation in meetings with Action's
former  customers,  vendors,  and employees.  Consultant  will use his best good
faith efforts to introduce the  Corporation and its  representatives  to all key
Action customer account  representatives  including,  without limitation,  those
persons representing the companies listed on EXHIBIT A attached hereto.

     5. REMUNERATION.  Corporation and Consultant agree that Consultant will not
be paid any fees or other  compensation,  except as provided in Section 6 below,
for services provided under this Agreement.

     6. FRINGE BENEFITS AND EXPENSES.

          a. In consideration for his consulting  services the Corporation shall
pay Consultant for twenty-four  (24) months following the Effective Date of this
Agreement  (the  "Consulting  Period")  all  his  reasonable  business  expenses
incurred on the Corporation's  behalf. These expenses include reasonable country
club dues [not to exceed $500 per month],  and  reasonable  automobile  expenses
incurred in  connection  with the  operation of Action's  1997  Lincoln  Towncar
presently  furnished to Consultant.  Consultant shall continue to have exclusive
use of the Towncar during the Consulting Period.

          b. The  Corporation  shall  provide  Consultant  and his  spouse  with
medical  insurance  comparable to that provided by Corporation to its employees,
to the extent such coverages are reasonably available,  but such insurance shall
not include any  long-term  care  benefits.  The  Corporation  may provide  such
insurance  coverage  through COBRA  benefits,  to the extent  Consultant and his
spouse are eligible  for COBRA  through  Action and, in such event,  Corporation
will pay all COBRA premiums during the Consulting  Period.  Consultant agrees to
elect COBRA coverage when his employment  with Action is terminated.  To provide
Consultant with the insurance coverage  contemplated hereby, the Corporation may
reimburse  Consultant  for any COBRA  premiums paid by him. If Consultant or his
spouse are eligible for Medicare  benefits,  Consultant  and his spouse (if they
have not done so) will apply for Medicare benefits and Corporation shall, at its
expense,  during the Consulting Period,  purchase for Consultant and his spouse,
to the extent coverage is reasonably available,  a supplemental health insurance
policy to provide  medical  insurance for those medical  expenses not covered by
Medicare.

          c. Corporation agrees that it shall reimburse Consultant for any other
business  or  miscellaneous  business-related  expenses  reasonably  incurred by
Consultant and related to the  performance of  Consultant's  services under this
Agreement  or other  activities  engaged in on behalf of  Corporation  (provided
prior written consent is obtained for expenses in excess of $500); reimbursement
for such  expenses  shall be paid  within  thirty  (30) days  after  receipt  by
Corporation of Consultant's reimbursement  documentation,  accompanied by copies
of   receipts   and  other   evidence   demonstrating   Consultant's   right  to
reimbursement.

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     7. TIME COMMITMENT.  Consultant  shall not be require to consult  full-time
for the  Corporation  during the  Consulting  Period.  Consultant is required to
devote  such time as is  reasonably  necessary  for the  proper  performance  of
Consultant's duties under this Agreement. However, as an independent contractor,
Consultant shall have control of and discretion as to establishing the method by
which he will perform services required of him under this Agreement,  subject to
the terms of this Agreement.  The parties  anticipate that Consultant will spend
an average of (but not more than)  fifteen (15) hours of service per week in the
performance of Consultant's duties to the Corporation.

     8. RIGHT OF TERMINATION.  This Agreement shall not be terminable during the
term hereof,  except for cause by either  Corporation or  Consultant,  or in the
event of Consultant's death during the Consulting Term. For the purposes of this
Section, "for cause" means (i) failure of Corporation to pay fringe benefits and
expenses in  accordance  with  Section 6 above;  (ii) failure of either party to
otherwise materially perform under this Agreement, if such failure continues for
ten (10) business days following notice to the non-performing  party as provided
under  this  Agreement;  and (iii)  any  breach  by  Consultant  under the Asset
Purchase Agreement (or the Exhibits thereto) between Consultant,  Action and the
Corporation.

     9.  ASSIGNMENT.  This  Agreement and the duties,  obligations  and benefits
under it are not  assignable  or delegable by Consultant  without  Corporation's
prior written  consent.  This  Agreement  shall be binding upon and inure to the
benefit of Corporation and its respective successors and assigns.

     10. NOTICE.  Any notice  required to be given by this Agreement shall be in
writing and shall be considered  as given and received  upon personal  delivery,
one day after being sent when sent by a professional  overnight courier service,
two days after posting when sent by United States  registered or certified mail,
or the date of transmission if sent by telecopier, addressed as follows:

              If to Consultant:   Mr. Bobby R. Ellis
                                  1812 Hill Valley Drive
                                  Arlington, Texas  76013

              If to Corporation:  Knight Transportation, Inc.
                                  Attn: Kevin P. Knight, Chief Executive Officer
                                  5601 W. Buckeye Road
                                  Phoenix, Arizona  85043

     11. INDEPENDENT CONTRACTOR STATUS. Consultant's relationship to Corporation
shall be that of an  independent  contractor  and not an employee.  Any federal,
state and local taxes  required  to be paid by  Consultant  with  respect to any
fringe benefits and expenses  described in Section 6 shall be Consultant's  sole
responsibility as an independent contractor. Nothing contained

                                       -3-

in this  Agreement  shall be  construed so as to make  Consultant  an officer or
employee of  Corporation.  Neither  Consultant  nor  Corporation  shall have the
authority to bind the other party in any respect.

     12.  CONFIDENTIALITY.  During  the term of the  Agreement  and  thereafter,
Consultant  shall  hold in  confidence  and  shall  not  disclose,  directly  or
indirectly,  to any  third  person  any  Confidential  Information  unless  such
disclosure is authorized  in writing by the  Corporation  or is required by law.
For purposes of this  Agreement,  "Confidential  Information"  means any and all
confidential or proprietary  information regarding the Corporation's  personnel,
products,  customers, customer lists, prospects, business plans, lists of actual
or prospective  customers,  pricing,  trade secrets,  pay practices,  suppliers,
financing  arrangements,  or other  information  relating to the  operations  or
business of the Corporation or any parent,  subsidiary and affiliated companies,
regardless of whether such confidential information is known or available to, or
developed  by,   Consultant   before  or  during  the  term  of  the  Agreement.
Confidential Information shall not include any information clearly in the public
domain, provided that such information did not come into public domain by reason
of the Consultant's  violation of this Agreement.  Consultant  acknowledges that
the information described above is proprietary and confidential and will be kept
confidential.  Consultant agrees that all right,  title and interest in any such
Confidential Information shall be and shall remain the exclusive property of the
Corporation.  Consultant agrees to execute any agreements or documents and to do
all other things reasonably requested by the Corporation in order to vest in the
Corporation  all  ownership  rights  in  the  Confidential   Information.   Upon
termination of the Agreement,  Consultant agrees to turn over to the Corporation
all  notes,  data,  tapes,  reference  items,  sketches,  drawings,   memoranda,
calendars, records and other materials in Consultant's possession or control.

     13.  NON-COMPETE  AGREEMENT.  Consultant  acknowledges and agrees that this
Agreement  shall  not  modify  the terms and  conditions  of the Asset  Purchase
Agreement and Consultant  shall continue to be subject to and bound by all terms
and conditions of the Asset Purchase Agreement,  including,  without limitation,
the non-compete agreement set forth therein.

     14. MISCELLANEOUS.

          a. This  Agreement  shall be governed by and  construed in  accordance
with the substantive laws of the State of Arizona.

          b.  Amendments,  modifications  and changes to this Agreement shall be
valid only if in writing and signed by both parties to this Agreement.

          c.  This  Agreement,  together  with  the  Asset  Purchase  Agreement,
contains  the entire  understanding  of the  parties  with regard to the matters
contained  herein and  supersedes any prior or  contemporaneous  written or oral
agreements of the parties.

                                      -4-

          d. The  waiver of either  party of a breach of any  provision  of this
Agreement shall not operate or be construed as a waiver of any subsequent breach
by either  party.  If either  party  retains an attorney to enforce the terms of
this  Agreement,  the prevailing  party to any action or enforcement  proceeding
shall be  reimbursed  by the other  party for all  costs and  expenses  thereof,
whether or not assessable.

     The undersigned have executed this Agreement as of the Effective Date.


"CONSULTANT"                                 /s/ Bobby R. Ellis
                                             -----------------------------------
                                             Bobby R. Ellis



"CORPORATION"                                KNIGHT ACQUISITION CORPORATION,
                                             an Arizona corporation


                                             By: /s/ Kevin P. Knight
                                                --------------------------------
                                                Its: Chief Executive Officer
                                                    ----------------------------

                                             Knight Transportation, Inc., an
                                             Arizona corporation


                                             By: /s/ Kevin P. Knight
                                                --------------------------------
                                                Its: Chief Executive Officer
                                                    ----------------------------

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