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<body bgcolor="#ffffff" style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">&#160;</font>

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      <hr style="COLOR: black" align="left" noshade size="1" width="100%">
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 18pt; FONT-WEIGHT: bold">UNITED
STATES</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 18pt; FONT-WEIGHT: bold">SECURITIES
AND EXCHANGE COMMISSION</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 12pt">Washington,
D.C. 20549</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">_____________________________________________________________________</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 18pt; FONT-WEIGHT: bold">FORM
8-K</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">CURRENT
REPORT</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Pursuant
to Section 13 or 15(d) of the Securities Exchange Act of 1934</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Date of
Report (Date of earliest event reported):</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">March
15, 2010</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">_____________________________________________________________________</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 18pt; FONT-WEIGHT: bold">KNIGHT
TRANSPORTATION, INC.</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">(Exact
name of registrant as specified in its charter)</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
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<tr>
            <td valign="top" width="25%">
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            </td>
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              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">000-24946</font></div>
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            <td valign="top" width="25%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(State
      or other jurisdiction</font></div>
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">of
      incorporation)</font></div>
            </td>
            <td valign="top" width="18%">
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      Number)</font></div>
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              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(IRS
      Employer</font></div>
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      No.)</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
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<tr>
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              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">5601
      W. Buckeye Road, Phoenix, AZ</font></div>
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              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">85043</font></div>
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              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(Address
      of principal executive offices)</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
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269-2000</font></div>
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telephone number, including area code)</font></div>
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appropriate box below if the Form 8-K filing is intended to simultaneously
satisfy the filing obligation of the registrant under any of the following
provisions:</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
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<tr>
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      communications pursuant to Rule 425 under the Securities Act (17 CFR
      230.425)</font></div>
            </td>
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            <td valign="top" width="4%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
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      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)</font></div>
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            <td valign="top" width="4%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="78%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td align="left" valign="top" width="4%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">[&#160;&#160;&#160;]</font></div>
            </td>
            <td align="left" valign="top" width="78%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Pre-commencement
      communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
      240.14d-2(b))</font></div>
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            <td valign="top" width="4%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="78%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td align="left" valign="top" width="4%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">[&#160;&#160;&#160;]</font></div>
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            <td align="left" valign="top" width="78%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Pre-commencement
      communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
      240.13e-4(c))</font></div>
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    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div><br>
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      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
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</font></div>
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          <hr style="COLOR: black" noshade size="2">
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</font></div>
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    <div>
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<tr>
            <td valign="top" width="8%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Item
      5.03</font></div>
            </td>
            <td colspan="2" valign="top" width="92%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Amendments
      to Articles of Incorporation or Bylaws; Change in Fiscal
    Year.</font></div>
            </td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td colspan="2" valign="top" width="92%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font>Effective March 15, 2010, the
      Board of Directors (the "Board") of Knight Transportation, Inc., an
      Arizona corporation (the "Company"), approved the amendment and
      restatement of Section 3.3 of the Amended and Restated Bylaws of the
      Company (the "Amendment").&#160;&#160;Specifically, the&#160;Amendment
      establishes a director resignation policy that would require any director
      nominee who receives in an uncontested election a greater number of votes
      cast "withheld" for his or her election than "for" his or her election to
      tender his or her resignation to the Company's Nominating and Corporate
      Governance Committee for consideration.&#160;&#160;The Board also approved
      the amendment and restatement of the Bylaws of the Company, which shall be
      designated as the "2010 Amended and Restated Bylaws," so as to include
      the&#160;Amendment and make other conforming changes
    therein.</font></div>
            </td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td colspan="2" valign="top" width="92%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td colspan="2" valign="top" width="92%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font>The description of
      the&#160;Amendment contained herein is qualified in its entirety by the
      complete text of the&#160;2010 Amended and Restated Bylaws of Knight
      Transportation, Inc. attached to this Form 8-K as Exhibit 3&#160;and
      incorporated by reference into this Item 5.03.</font></div>
            </td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td colspan="2" valign="top" width="92%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td valign="top" width="8%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Item
      9.01</font></div>
            </td>
            <td colspan="2" valign="top" width="92%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Financial
      Statements and Exhibits.</font></div>
            </td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td colspan="2" valign="top" width="92%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td colspan="2" valign="top" width="92%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">(d)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Exhibits.</font></div>
            </td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="12%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="80%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="12%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">EXHIBIT</font></div>
            </td>
            <td valign="top" width="80%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="12%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; TEXT-DECORATION: underline"><font style="DISPLAY: inline">NUMBER</font></font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; TEXT-DECORATION: underline"><font style="DISPLAY: inline">EXHIBIT DESCRIPTION</font></font></div>
            </td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="12%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="80%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="12%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt"><a href="exhibit3.htm">3</a></font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">2010
      Amended and Restated Bylaws of Knight Transportation,
  Inc.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div id="PGBRK" style="TEXT-INDENT: 0pt; WIDTH: 100%; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always; WIDTH: 100%">
        <div style="TEXT-ALIGN: center; WIDTH: 100%"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
        <div style="TEXT-ALIGN: center; WIDTH: 100%">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
      </div>
    </div><br>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">SIGNATURE</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font id="TAB1" style="MARGIN-LEFT: 24pt"></font>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.</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div align="left">
      <table cellpadding="0" cellspacing="0" width="97%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr>
            <td valign="top" width="61%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td align="left" colspan="2" valign="top" width="39%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">KNIGHT
      TRANSPORTATION, INC.</font></div>
            </td>
          </tr><tr>
            <td valign="top" width="61%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td colspan="2" valign="top" width="39%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td valign="top" width="61%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td colspan="2" valign="top" width="39%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td align="left" valign="top" width="61%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Date:&#160;&#160;March
      17, 2010</font></div>
            </td>
            <td align="left" valign="top" width="3%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">By:</font></div>
            </td>
            <td align="left" valign="top" width="36%" style="BORDER-BOTTOM: black 2px solid">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;/s/
      David A. Jackson</font></div>
            </td>
          </tr><tr>
            <td valign="top" width="61%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="3%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td align="left" valign="top" width="36%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">David
      A. Jackson</font></div>
            </td>
          </tr><tr>
            <td valign="top" width="61%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="3%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td align="left" valign="top" width="36%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Chief
      Financial Officer</font></div>
            </td>
          </tr></table>
    </div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div><br>
    <div id="PGBRK" style="TEXT-INDENT: 0pt; WIDTH: 100%; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always; WIDTH: 100%">
        <div style="TEXT-ALIGN: center; WIDTH: 100%"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
        <div style="TEXT-ALIGN: center; WIDTH: 100%">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 8pt">&#160;
</font></div>
      </div>
    </div><br>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">EXHIBIT
INDEX</font></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr>
            <td valign="top" width="14%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">EXHIBIT</font></div>
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold; TEXT-DECORATION: underline"><font style="DISPLAY: inline">NUMBER</font></font></div>
            </td>
            <td valign="top" width="1%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td align="left" valign="bottom" width="85%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold; TEXT-DECORATION: underline"><font style="DISPLAY: inline">EXHIBIT DESCRIPTION</font></font></div>
            </td>
          </tr><tr>
            <td valign="top" width="14%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="1%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="85%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
          </tr><tr>
            <td valign="top" width="14%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt"><a href="exhibit3.htm">3</a></font></div>
            </td>
            <td valign="top" width="1%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;
      </font></td>
            <td valign="top" width="85%">
              <div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">2010
      Amended and Restated Bylaws of Knight Transportation,
  Inc.</font></div>
            </td>
          </tr></table>
    </div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div>
    <div style="TEXT-INDENT: 0pt; DISPLAY: block"><br></div><br><br></body>
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form8k.htm
UNITED
STATES
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):
March
15, 2010
_____________________________________________________________________
KNIGHT
TRANSPORTATION, INC.
(Exact
name of registrant as specified in its charter)
Arizona
000-24946
86-0649974
(State
      or other jurisdiction
of
      incorporation)
(Commission
File
      Number)
(IRS
      Employer
Identification
      No.)
5601
      W. Buckeye Road, Phoenix, AZ
85043
(Address
      of principal executive offices)
(Zip
      Code)
(602)
269-2000
(Registrant's
telephone number, including area code)
Check the
appropriate box below if the Form 8-K filing is intended to simultaneously
satisfy the filing obligation of the registrant under any of the following
provisions:
[   ]
Written
      communications pursuant to Rule 425 under the Securities Act (17 CFR
      230.425)
[   ]
Soliciting
      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)
[   ]
Pre-commencement
      communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
      240.14d-2(b))
[   ]
Pre-commencement
      communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
      240.13e-4(c))
Item
      5.03
Amendments
      to Articles of Incorporation or Bylaws; Change in Fiscal
    Year.
Effective March 15, 2010, the
      Board of Directors (the "Board") of Knight Transportation, Inc., an
      Arizona corporation (the "Company"), approved the amendment and
      restatement of Section 3.3 of the Amended and Restated Bylaws of the
      Company (the "Amendment").  Specifically, the Amendment
      establishes a director resignation policy that would require any director
      nominee who receives in an uncontested election a greater number of votes
      cast "withheld" for his or her election than "for" his or her election to
      tender his or her resignation to the Company's Nominating and Corporate
      Governance Committee for consideration.  The Board also approved
      the amendment and restatement of the Bylaws of the Company, which shall be
      designated as the "2010 Amended and Restated Bylaws," so as to include
      the Amendment and make other conforming changes
    therein.
The description of
      the Amendment contained herein is qualified in its entirety by the
      complete text of the 2010 Amended and Restated Bylaws of Knight
      Transportation, Inc. attached to this Form 8-K as Exhibit 3 and
      incorporated by reference into this Item 5.03.
Item
      9.01
Financial
      Statements and Exhibits.
(d)           Exhibits.
EXHIBIT
NUMBER
EXHIBIT DESCRIPTION
3
2010
      Amended and Restated Bylaws of Knight Transportation,
  Inc.
SIGNATURE
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.
Date:  March
      17, 2010
By:
/s/
      David A. Jackson
David
      A. Jackson
Chief
      Financial Officer
EXHIBIT
INDEX
EXHIBIT
NUMBER
EXHIBIT DESCRIPTION
3
2010
      Amended and Restated Bylaws of Knight Transportation,
  Inc.