Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
KOHL TIMOTHY M
   2. Issuer Name and Ticker or Trading Symbol
KNIGHT TRANSPORTATION INC [KNGT] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President
(Last)
(First)
(Middle)
5601 WEST BUCKEYE ROAD		 3. Date of Earliest Transaction (Month/Day/Year)
01/25/2005
(Street)

PHOENIX, AZ 85043		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, par value $0.01 per share 01/25/2005   M   31,500 A $ 4.2777 45,478 (12) D  
Common Stock, par value $0.01 per share 01/25/2005   M   10,125 A $ 5.037 55,603 (12) D  
Common Stock, par value $0.01 per share 01/25/2005   M   11,251 A $ 7.3333 66,854 (12) D  
Common Stock, par value $0.01 per share 01/25/2005   M   3,000 A $ 18.86 69,854 (12) D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to Buy) $ 4.2777 (1) 01/25/2005   M     31,500 (1) 10/13/2003(6) 10/12/2010 Common Stock 47,250 (1) $ 4.2777 (1) 15,750 D  
Employee Stock Option (Right to Buy) $ 5.037 (2) 01/25/2005   M     10,125 (2) 03/23/2002(7) 03/22/2009 Common Stock 10,125 (2) $ 5.037 (2) 0 D  
Employee Stock Option (Right to Buy) $ 7.3333 (3) 01/25/2005   M     11,251 (3) 09/18/2004(8) 09/17/2011 Common Stock 33,749 (3) $ 7.3333 (3) 22,498 D  
Employee Stock Option (Right to Buy) $ 16.5533 (4) 01/25/2005   J(4)   15,000 (4)   05/01/2006(9) 05/31/2013 Common Stock 15,000 (4) $ 16.5533 (4) 15,000 D  
Employee Stock Option (Right to Buy) $ 12.6667 (5) 01/25/2005   J(5)   18,750 (5)   06/05/2005(10) 06/04/2012 Common Stock 18,750 (5) $ 12.6667 (5) 18,750 D  
Employee Stock Option (Right to Buy) $ 18.86 01/25/2005   M     3,000 12/31/2004(11) 07/26/2014 Common Stock 15,000 $ 18.86 12,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
KOHL TIMOTHY M
5601 WEST BUCKEYE ROAD
PHOENIX, AZ 85043		   X     President  

Signatures

 /s/ Timothy M. Kohl   01/25/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) This option was previously reported as covering 31,500 shares at an exercise price of $6.3888 per share. The option's exercise price should have been reported as $6.4166 per share. The option was also adjusted to reflect the 3-for-2 stock split on July 12, 2004.
(2) This option was previously reported as covering 6,750 shares at an exercise price of $7.55 per share. The option's exercise price should have been reported as $7.5555 per share. The option was also adjusted to reflect the 3-for-2 stock split on July 12, 2004.
(3) This option was previously reported as covering 22,500 shares at an exercise price of $11.00 per share. The option was adjusted to reflect the 3-for-2 stock split on July 12, 2004.
(4) This option was previously reported as covering 10,000 shares at an exercise price of $24.83 per share. The option was adjusted to reflect the 3-for-2 stock split on July 12, 2004. The reporting on this Form 4 is to reflect the adjusted number of shares and exercise price; no new options were granted.
(5) This option was previously reported as covering 12,500 shares at an exercise price of $19.00 per share. The option was adjusted to reflect the 3-for-2 stock split on July 12, 2004. The reporting on this Form 4 is to reflect the adjusted number of shares and exercise price; no new options were granted.
(6) This option is subject to a vesting schedule. 15,750 shares vested on October 13, 2003; 15,750 shares vested on October 13, 2004; the remaining shares vest on October 13, 2005.
(7) This option is subject to a vesting schedule. 3,375 shares vested March 23, 2002; 3,375 shares vested March 23, 2003; and the remaining shares vested on March 23, 2004.
(8) This option is subject to a vesting schedule. 11,251 shares vested September 18, 2004; 11,248 shares will vest September 18, 2005; and the remaining shares will vest September 18, 2006.
(9) This option is subject to a vesting schedule. The shares vest in three equal annual installments on May 1, 2006, 2007, and 2008.
(10) This option is subject to a vesting schedule. 6,251 shares will vest June 5, 2005; 6,249 shares will vest June 5, 2006; the remaining shares will vest June 5, 2007.
(11) This option is subject to a vesting schedule. 20% of the options vested December 31, 2004; and 5% of the optioins will become vested and exercisable each calendar quarter thereafter until all options are vested and exercisable as of December 31, 2008.
(12) Shares reflect the 3-for-2 stock split on July 12, 2004.

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