On-road remote sensing of CO and HC emissions in California. Final report

The University of Denver used its remote sensor for motor vehicle CO and HC emissions to measure the tailpipe concentrations of over 90,000 California Vehicles in a 30-day period in 1991. The study consisted of three phases; a series of controlled tests, a pullover study of high-emitters, and a series of measurements at a variety of sites around the South Coast Air Basin and northern California. The highest CO emissions occurred under hard accelerations, while the highest HC emissions occurred during decelarations. In the pullover study, over 92% of the vehicles identified as high emitters failed the roadside inspection, equivalent to a California Smog Check. More than 60% of the vehicles stopped had defective emission control equipment (over 40% were tampered). The highest emitting vehicles showed the most variability in their emissions. This variability carries implications for the design of inspection and maintenance programs.

[1]  G. Bishop,et al.  Automobile emissions are statistically gamma distributed. , 1994, Environmental science & technology.

[2]  Gary A. Bishop,et al.  A cost-effectiveness study of carbon monoxide emissions reduction utilizing remote sensing , 1993 .

[3]  Gary A. Bishop,et al.  ON-ROAD CARBON MONOXIDE AND HYDROCARBON REMOTE SENSING IN THE CHICAGO AREA , 1991 .

[4]  Gary A. Bishop,et al.  Enhancements of Remote Sensing for Vehicle Emissions in Tunnels , 1994 .

[5]  G. Bishop,et al.  Analysis of on-road remote sensing as a tool for automobile emissions control. Final report , 1990 .

[6]  J. E. Peterson,et al.  On-Road Hydrocarbon Remote Sensing in the Denver Area , 1993 .

[7]  G. Bishop,et al.  Emissions from lit-use Motor Vehicles in Los Angeles: A Pilot Study of Remote Sensing and the Inspection and Maintenance Program , 1990 .

[8]  R F Sawyer,et al.  Achieving Acceptable Air Quality: Some Reflections on Controlling Vehicle Emissions , 1993, Science.

[9]  Robert M. Reuter,et al.  Fuel Effects in Auto/Oil High Emitting Vehicles , 1993 .

[10]  G. Bishop,et al.  Emission Characteristics of Mexico City Vehicles , 1992 .

[11]  Nelson A. Kelly,et al.  Real-World Emissions from a Modern Production Vehicle Driven in Los Angeles , 1993 .

[12]  G. Bishop,et al.  IR long-path photometry: a remote sensing tool for automobile emissions. , 1989, Analytical chemistry.

[13]  C E Lyons,et al.  REMOTE SENSING ENHANCED MOTOR VEHICLE EMISSIONS CONTROL FOR POLLUTION REDUCTION IN THE CHICAGO METROPOLITAN AREA: SITING AND ISSUES ANALYSIS , 1991 .