With the advent of Intelligent Transportation Systems and an increased focus on technological solutions The Oregon Department of Transportation (ODOT) 14 other departments of Transportation and the Federal Highway Administration, in cooperation with the Western Transportation Institute (WTI) have examined the current state of knowledge on the reliability and effectiveness of animal detection systems. Phase I of this project also resulted in the development and installation of a prototype animal detection system along US 191 in Yellowstone National Park, Montana. This prototype was found to reliably detect large animals that approach the road. In phase II of this project the blind spots of the system will be addressed and certain components of the system will be repaired or replaced. Once these modifications and repairs have been completed, the effectiveness of the system in reducing vehicle speed and reducing animal-vehicle collisions will be evaluated.