The Federal Railroad Administration, in collaboration with the Association of American Railroads and project coordinator Transportation Technology Center, Inc., has sponsored a revenue service test of an automated, machine vision inspection system for evaluating truck components on railcars. The system was from KLD Labs of Hauppauge, NY, and installed at the Hague site on CSX railroad property. This represents the second phase of a two-phase project. In Phase 1, the inspection system was evaluated at the Transportation Technology Center in Pueblo, CO, where algorithms were developed and a manual data viewer was created. This interim report is published at the midway point of Phase 2, where the revenue service system was installed and is now operational. Testing is currently underway. The manual data reviewer is being applied to in-service traffic while inspection algorithms are being updated and tried out on a wide variety of freight rail vehicles.