News Details

June 23, 2006--Knight Transportation Inc. (NYSE: KNX) announced today that it is scheduled to present at the William Blair & Co. 2006 Growth Stock Conference at the Four Seasons Hotel in Chicago on Thursday, June 29, 2006, at 11:10 a.m. Central time. The presentation will be broadcast live on the Internet. Interested parties can register to view the webcast at http://www.wsw.com/webcast/blair6/knx/.

Presenting in the conference will be Tim Kohl, president. A link to the presentation will also be available in the shareholder section of the company's Web site at www.knighttrans.com.

Knight Transportation Inc., with headquarters 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. 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 conferences 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.