Item 8.01 Other Events

The Board of Directors of Knight Transportation, Inc., an Arizona corporation (the "Company"), has authorized the Company to repurchase up to 3,000,000 shares of its outstanding common stock. Repurchases are made pursuant to the provisions of Rule 10b-18, or pursuant to privately negotiated transactions with employees or directors of the Company. In making repurchases the Company considers both its cash requirements and market conditions. Repurchases will continue from time to time, as conditions permit, until the total number of shares authorized to be repurchased have been bought, or until the Company's authorization to repurchase is terminated, whichever occurs first.

The information in this report and the exhibit hereto may contain "forward-looking statements" within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act. There can be no assurance that future dividends will be declared. Please refer to the last paragraph of the press release and various disclosures by the Company in its press releases, shareholder reports, and filings with the Securities and Exchange Commission for information concerning risks, uncertainties and other factors that may affect future results.

-2-

---