This paper describes the seven elements of the Oregon Automatic Vehicle Identifiation -Weigh-In-Motion Demonstration Project. The project purpose is to demonstrate the capability of the AVI-WIM equipment. Operations started in February 1984 and will end September 1935. To date the experience with the equipment has been very satisfactory. Weight measurement accuracy has been better than expected. Analysis of the preliminary traffic data from the high speed WIM site shows that some preconceived notions on truck volumes and weights may have to be revised, Future directions of the program are discussed.