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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K
                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934


          Date of Report (Date of earliest event reported) April 29, 2002


                           KNIGHT TRANSPORTATION, INC.
             (Exact name or registrant as specified in its charter)


           Arizona                    000-24946                   86-0649974
(State or other jurisdiction         (Commission                (IRS Employer
      of incorporation)              File Number)            Identification No.)


                  5601 W. Buckeye Road, Phoenix, Arizona 85043
               (Address of Principal Executive Offices) (Zip Code)


        Registrant's telephone number, including area code (602) 269-2000


                                 Not Applicable
          (Former name or former address, if changed since last report)

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ITEM 1. CHANGES IN CONTROL OF REGISTRANT.

     Not applicable.

ITEM 2. ACQUISITION OR DISPOSITION OF ASSETS.

     Not applicable.

ITEM 3. BANKRUPTCY OR RECEIVERSHIP.

     Not applicable.

ITEM 4. CHANGE IN REGISTRANT'S CERTIFYING ACCOUNTANT.

     On April 29, 2002,  Knight  Transportation,  Inc.,  an Arizona  corporation
("we," "our," "us," or the "Company"), elected to replace its independent public
accountant, Arthur Andersen LLP ("Arthur Andersen"), with KPMG LLP ("KPMG"). Our
Board of Directors  solicited from the largest public  accounting firms requests
for proposals to serve as our independent public accountants for the fiscal year
ending December 31, 2002. Upon the recommendation of our Audit Committee,  after
a review of the proposals made by the independent public accountants, we elected
to replace Arthur Andersen and engage KPMG as our independent public accountants
for the fiscal year ending  December  31, 2002.  Our decision to replace  Arthur
Andersen was based solely on the Audit  Committee's and our annual evaluation of
the cost of audit services. We have been satisfied with all services rendered by
Arthur Andersen to us to date.

     The reports  issued by Arthur  Andersen in  connection  with our  financial
statements  for our two most recent  fiscal years ended  December 31, 2001,  and
December  31,  2000,  respectively,  did  not  contain  an  adverse  opinion  or
disclaimer  of  opinion,  nor were these  reports  qualified  or  modified as to
uncertainty, audit scope, or accounting principles.

     During our two most  recent  fiscal  years ended  December  31,  2001,  and
December 31, 2000, and the subsequent  interim  periods through the date of this
report,  there was no disagreement  between us and Arthur Andersen on any matter
of accounting  principles  or  practices,  financial  statement  disclosure,  or
auditing  scope  or  procedure,  which  disagreements,  if not  resolved  to the
satisfaction  of Arthur  Andersen,  would have  caused  Arthur  Andersen to make
reference to the subject  matter of the  disagreements  in  connection  with its
reports,   and  there  occurred  no  "reportable  events"  as  defined  in  Item
304(a)(1)(v) of Regulation S-K.

     We have provided Arthur  Andersen with a copy of the foregoing  statements.
Attached to this Form 8-K as Exhibit 16 is a copy of Arthur Andersen's letter to
the Securities and Exchange  Commission dated May 3, 2002, stating its agreement
with the foregoing statements.

ITEM 5. OTHER EVENTS.

     Not applicable.

ITEM 6. RESIGNATION OF REGISTRANT'S DIRECTORS.

     Not applicable.

ITEM 7. FINANCIAL STATEMENTS, PROFORMA FINANCIAL INFORMATION AND EXHIBITS.

     Exhibits:

        16     Letter of Arthur Andersen LLP to the Securities and Exchange
               Commission dated May 3, 2002.

ITEM 8. CHANGE IN FISCAL YEAR.

     Not applicable.

ITEM 9. REGULATION FD DISCLOSURE.

     Not applicable.

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                                   SIGNATURES

     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                        KNIGHT TRANSPORTATION, INC.


Dated: May 3, 2002                      /s/ Timothy M. Kohl
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                                        Timothy M. Kohl
                                        Executive Vice-President, Secretary, and
                                        Chief Financial Officer

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