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CONTROL OF MOTOR VEHICLE EMISSIONS - THE U.S. EXPERIENCE
Citation:
Black, F. CONTROL OF MOTOR VEHICLE EMISSIONS - THE U.S. EXPERIENCE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/D-90/199 (NTIS PB91136911), 1990.
Description:
An historical overview of the U.S. experience with controlling emissions from highway motor vehicles is presented. he evolution of new motor vehicle emissions certification practice, end-of-assembly-line inspection, in-use surveillance and recall, inspection and maintenance, and antitampering programs is discussed. he changes in motor vehicle designs and fuel formulations resulting from these practices are also described, along with associated changes in the characteristics of emissions. Although significant reductions of new motor vehicle emission rates have been experienced, excessive consumer tampering and poor maintenance, along with large increases in the number of roadway miles traveled, have decreased the magnitude of air quality improvements resulting from these control efforts. uture possible directions for further improvements are described as the U.S. Congress considers changes to the Clean Air Act requiring increasingly stringent new motor vehicle emission standards, changes in procedures for identification and repair of motor vehicles that have been tampered with or poorly maintained, and requirements for use of cleaner, more environmentally benign alternatives to conventional petroleum based fuels.
