Knight Transportation Declares Quarterly Cash Dividend

PHOENIX--(BUSINESS WIRE)--March 13, 2006--Knight Transportation Inc. (NYSE: KNX) announced today that its board of directors has declared a cash dividend of $0.02 per share on its common stock. This is the sixth quarterly dividend initiated pursuant to a cash dividend policy approved by the board of directors. The dividend is payable to shareholders of record on March 23, 2006, and is expected to be paid on March 31, 2006. The actual declaration of future cash dividends, and the establishment of record and payment dates, is subject to final determination by the board of directors each quarter after its review of the company's financial performance.

Knight Transportation Inc., headquartered in Phoenix, is a truckload carrier offering dry van, refrigerated and brokerage services to its customers through a network of service centers located throughout the United States. Refrigerated and brokerage services are provided through the wholly owned subsidiaries of Knight Refrigerated, LLC, and Knight Brokerage, LLC, respectively. The principal types of freight transported include consumer staples, retail, paper products, packaging/plastics, manufacturing and import/export commodities.

This press release may contain "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such statements are made based on the current beliefs and expectations of the company's management and are subject to significant risks and uncertainties. Actual results or events may differ from those anticipated by forward-looking statements. In particular, our declaration of future dividends is subject to various risks and uncertainties, including: our inability to declare a dividend in compliance with applicable laws; restrictions on the payment of dividends under existing or future credit agreements or other financing arrangements; changes in tax laws relating to corporate dividends; a determination by the board of directors that the declaration of a dividend is not in the best interests of the company and its shareholders; an increase in our cash needs or a decrease in available cash; or a deterioration in our financial condition or results, including as a result of those risks, uncertainties, and other factors identified from time-to-time in our filings with the Securities and Exchange Commission. Please refer to various disclosures by the company in its press releases, stockholder reports, and filings with the Securities and Exchange Commission for information concerning risks, uncertainties and other factors that may affect future results.