AUTOMOBILE EXHAUST EMISSION SURVEILLANCE ANALYSIS OF THE FY 73 PROGRAM

The Emission Factor Program provides a realistic assessment of the effectiveness of Federal air pollution regulations by testing production vehicles in the hands of the motoring public. This report summarizes the results of the FY 73 Emission Factor Program and compares these results with those obtained in earlier Emission Factor Program. The FY 73 Program tested 1,080 1967-1974 model-year vehicles in six cities.