Emissions inspection and maintenance (I/M) programs subject vehicles to periodic inspections of their emission control systems. Despite widespread use of these programs in air-quality management, policy makers and the public have found a number of problems associated with them. Prominent among these issues is the perception that emissions benefits and other impacts of I/M programs have not been evaluated adequately. Evaluating Vehicle Emissions Inspection and Maintenance Programs assesses the effectiveness of these programs for reducing mobile source emissions. In this report, the committee evaluates the differences in the characteristics of motor vehicle emissions in areas with and without I/M programs, identifies criteria and methodologies for their evaluation, and recommends improvements to the programs. Most useful of all, this book will help summarize the observed benefits of these programs and how they can be redirected in the future to increase their effectiveness.Human Response to OBDII The intent of the MIL is to inform motorists that they need to check their emissions control systems ... However, many motorists are unlikely to spend the time and money to bring vehicles in for repair voluntarily, ... The federal emissions control warranty is 96 months/80, 000 miles for major emissions control components (such as the ... about what an illuminated check- engine light represents and what its relationship is to emissions and the cost- effectiveness ofanbsp;...
|Title||:||Evaluating Vehicle Emissions Inspection and Maintenance Programs|
|Author||:||Transportation Research Board, Board on Environmental Studies and Toxicology, Committee on Vehicle Emission Inspection and Maintenance Programs, National Research Council, Division on Earth and Life Studies|
|Publisher||:||National Academies Press - 2001-11-16|