Knight Transportation to Participate at the Bear Stearns Global Transportation Conference

PHOENIX--(BUSINESS WIRE)--May 6, 2005--Knight Transportation, Inc. (NYSE:KNX) announced it will be participating in the Bear Stearns Global Transportation Conference in New York City, NY. Kevin P. Knight, Chairman & CEO of Knight Transportation, Inc., will present on Thursday, May 12 at 8:45 a.m. EST.

Knight Transportation, Inc. is a short- to medium- haul truckload carrier based in Phoenix, AZ. Knight Transportation, a publicly owned company since 1994, currently has 18 regional dry van operations centers located throughout the United States and one temperature controlled subsidiary located in Phoenix, Arizona.

The presentation or discussions at this conference may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. 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.