Title | Some Issues in the Statistical Analysis of Vehicle Emissions |
Publication Type | Journal Article |
Year of Publication | 2000 |
Authors | Thomas P Wenzel, Brett C Singer, Robert R Slott |
Journal | Journal of Transportation and Statistics |
Volume | 3 |
Start Page | 1 |
Issue | 2 |
Pagination | 1-14 |
Date Published | 09/2000 |
ISSN | 1094-8848 |
Abstract | This paper presents some of the issues that complicate the statistical analysis of real-world vehicle emissions and the effectiveness of emissions control programs. The following issues are discussed: 1) inter- and intra-vehicle emissions variability, 2) skewness of the distribution of emissions from in-use vehicles, 3) the difficulty of obtaining statistically representative vehicle samples, 4) the influence of repeat testing on only a subset of the vehicle fleet, and 5) differences among common test methods and pollutant measurement devices. The relevance of these issues is discussed in light of three regulatory purposes: testing the compliance of in-use vehicles with certification standards, evaluating the effectiveness of vehicle inspection and maintenance programs, and estimating emissions inventories for air quality modeling and compliance planning. A brief history and description of common vehicle emissions tests is also provided. |
URL | http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/publications/journal_of_transportation_and_statistics/volume_03_number_02/index.html |
LBNL Report Number | LBNL-46115 |
Refereed Designation | Refereed |