Abstract
Alternative and optimal methods for enforcement of vehicle safety equipment standards and exhaust emission. Levels were studied in relation to the existing Maryland inspection system. The mechanical condition of all Class A vehicles was determined in terms of safety-related criteria. Level of compliance to exhaust emission limits was studied. The economic feasibility of a periodic motor vehicle inspection program was considered, as well as its effect on air quality and fuel conservation. A random sample of 40,000 vehicles was made of the 1.8 million vehicles listed in Maryland as Class A.