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The Smog
Check Program is administered by the Bureau of Automotive Repair (BAR),
which is a part of the California Department of Consumer
Affairs. The Air Resources Board (ARB), by contrast,
is a part of the California Environmental Protection Agency.
For
information about your vehicle and the Smog Check Program, please visit
the BAR website, or contact them toll-free at
(800) 952-5210.
Remote Sensing Pilot Study 
The reports for the study initiated by ARB and BAR have been finalized and are available below. Evaluation
of Remote Sensing for Improving California's Smog Check Program, March 3,
2008
(Final
Report)
(PDF -- 1 MB)
Review
of Literature on Remote Sensing Devices, August 26, 2004 (Paper Study)
(PDF)
Estimating
Benefits of Improvement Strategies (including RSD) for the California
I/M Program:
An Inspection and Emissions Forecasting System, March 1, 2008 (Modeling Report)
(PDF -- 10 MB)
Estimating
Benefits and Costs of Improvement Strategies for the California I/M
Program:
Implementation Options for Using RSD, March 2, 2008
(Implementation Report)
(PDF)
Use
of California Remote Sensing Pilot Project Data for On-road Fleet and
Emissions Characterization,
and Evaluation of the Enhanced Smog Check Program, October 2005
(PDF -- 6 MB) Response to Peer Review Comments, March 7, 2008
(PDF)
Smog Check Documents
Environmental
Impacts of Implementing a Low Pressure Evaporative Test
in the California Smog Check Program
(PDF)
Control Concept Evaluation - Four-Wheel Dynamometer Requirements As Part of Smog Check
South Coast Air Basin
(PDF)
2004 Smog Check Program Evaluation
ARB and BAR have finalized a report to the Legislature and the
Inspection and Maintenance Review Committee (IMRC), Evaluation of the California
Enhanced Vehicle Inspection and Maintenance (Smog Check) Program (April 2004), as required under State
law. The transmittal letter to the IMRC is also
available for review.
| Final Report (PDF) |
| Transmittal Letter to the IMRC (PDF) |
The methodologies and calculations used to estimate the emissions
benefits in the Evaluation of the California Enhanced Vehicle
Inspection and Maintenance (Smog Check) Program (April 2004) are explained in a technical
support document. The transmittal letter to the IMRC
is also available for review.
| Cover Page and Introductory Comments (PDF) |
| Part 1 -- Analyses Conducted by ARB Staff (PDF) |
| Part 2 -- Further Analyses
Conducted by Sierra Research (PDF) |
| Transmittal Letter to the IMRC (PDF) |
2000 Report on Smog Check
ARB,
in consultation with BAR, finalized a report on the effectiveness of
Smog Check entitled Evaluation of California's Enhanced Vehicle
Inspection and Maintenance Program (Smog Check II). To view
this report, please click here.
ARB has other programs to control emissions from motor
vehicles. If you would like to find out more about
these, please click here.
Program
Contact
If you have any questions regarding the air quality elements of the
Smog Check Program, please contact:
Tom Scheffelin
Motor Vehicle Assessments Section
Planning and Technical Support Division
Air Resources Board
P.O. Box 2815
Sacramento, CA 95812
(916) 327-7847
tscheffe@arb.ca.gov
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