I/M Network Type: Effects On Emission Reduction, Cost, And Convenience--Technical Information Document.
The Clean Air Act Amendments (CAAA) of 1990 require that EPA revise and republish Inspection and Maintenance (I/M) guidance in the Federal Register addressing a variety of issues including network type, i.e., whether the program is centralized or decentralized.
Nearly every State that must operate an I/M program will need to obtain legislative authority to meet revised guidelines. This need provides an opportunity to reassess the effectiveness of current I/M program designs and make changes that will lead to improved air quality over the next decade. Network type is the most obvious and influential factor at work in an I/M program.
This report attempts to analyze how emission reduction effectiveness, cost, and convenience vary by network type. Results indicate that centralized I/M programs are more effective at reducing emissions at a lower cost than decentralized programs. Consumer convenience, however, is an important factor in network design and public acceptance.
|Exhaust emissions; Inspection; Maintenance; Motor vehicles; Tests|
|Office of Air and Radiation|
|Office of Mobile Sources|
|No division specified|
|Tierney, Eugene J.|