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Title: Analysis of invalid emission testing in the California smog check program. Technical report

Technical Report ·
OSTI ID:6746109
; ;

The report describes the results of exhaust emissions measurements reported by licensed automotive repair dealerships participation in the California motor vehicle inspection and maintenance (I/M) program called Smog Check. The results have been compared to measurements made on the same vehicles at the California Air Resources Board (ARB) laboratory. Based on an experimental program conducted by ARB the Smog Check station exhaust emission test results appear to be invalid for about 17.5% of the vehicles. The report describes the issues involved.

Research Organization:
Sierra Research, Inc., Sacramento, CA (United States)
OSTI ID:
6746109
Report Number(s):
PB-95-128922/XAB; CNN: EPA-68-C1-0079
Country of Publication:
United States
Language:
English

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Related Subjects

29 ENERGY PLANNING
POLICY AND ECONOMY
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORS
CERTIFICATION
TESTING
AUTOMOBILES
MEASURING INSTRUMENTS
MONITORS
VEHICLES
290300* - Energy Planning & Policy- Environment
Health
& Safety
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)