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| Ando, Amy Whritenour; Harrington, Winston; McConnell, Virginia D.. |
| The expense and inconvenience of enhanced vehicle emissions testing using the full 240-second dynamometer test has led states to search for ways to shorten the test process. In fact, all states that currently use the IM240 allow some type of fast-pass, usually as early in the test as second 31, and Arizona allows vehicles to fast-fail after second 93. While these shorter tests save states millions of dollars in inspection lanes and driver costs, there is a loss in information since test results are no longer comparable across vehicles. This paper presents a methodology for estimating full 240 second results from partial-test results for three pollutants: HC, CO and NOx. Using random sample of vehicles in Arizona which received full 240 second tests, we use... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Inspection and maintenance; Mobile source; Fast pass; Environmental Economics and Policy; Q25. |
| Ano: 1998 |
URL: http://purl.umn.edu/10734 |
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| Harrington, Winston; McConnell, Virginia D.; Walls, Margaret. |
| Regulation of mobile source emissions in the US has evolved as a complex combination of central government and decentralized authority. The central government required uniform new car emissions standards in the 1970 Clean Air Act, but gave states the power to meet ambient air quality standards however they saw fit, including various regulations on mobile sources. The 1990 Amendments to the Act strengthened the Federal role in some ways, by requiring tighter new car standards and more specific requirements for fuels and for vehicle emissions inspection and maintenance, but at the same time left states with a great deal of latitude to meet ambient standards and took greater recognition of regional variation in environmental problems. We examine the role of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Mobile source; Federalism; Public Economics; Q25; Q28. |
| Ano: 1996 |
URL: http://purl.umn.edu/10636 |
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