District of Columbia truck and bus safety demonstration project.

The purpose of the project was to demonstrate the validity and effectiveness of the Federal Motor Vehicle Safety Standards and Regulations, Vehicle in Use Inspection Standards, Part 570, Subpart B, in discovering safety-critical outages during periodic inspection of vehicles with Gross Vehicle Weight Rating (GVWR) of more than 10,000 pounds. The project also intended to provide an opportunity for evaluating some commercially available heavy duty automotive inspection equipment, particularly FMVSS 121 System anti-skid brake test equipment. The project obtained data and developed procedures for testing 121 Systems in an inspection lane environment.