Knight Transportation, Inc. Announces Participation in JP Morgan Aviation and Transportation Conference

Business Wire, March 11, 2008

PHOENIX -- Knight Transportation, Inc. (NYSE: KNX) announced today that Kevin Knight, Chief Executive Officer and Chairman for Knight Transportation, is scheduled to present at the JP Morgan Aviation and Transportation Conference in New York City, NY on Wednesday, March 19, 2008 at 9:00 a.m. EDT.

Knight Transportation, Inc., with headquarters in Phoenix, Arizona, 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. The principal types of freight transported include consumer staples, retail, paper products, packaging/plastics, manufacturing, and import/export commodities. Knight's common stock is traded on the New York Stock Exchange under the symbol KNX.

The presentation or discussions at the conference 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. Please refer to various disclosures made by the Company in its stockholder reports, press releases, and filings with the Securities and Exchange Commission for important risks and uncertainties that could cause actual results or events to differ materially from those expressed in or implied by any such forward-looking statement. The Company does not assume, and specifically disclaims, any obligation to update forward-looking statements.