Some Issues in the Statistical Analysis of Vehicle Emissions

Details

• Creators:
  Wenzel, Tom ; Singer, Brett C. ; Slott, Robert
• Subject/TRT Terms:
  • Air quality
  • Statistical analysis
  • Pollutants
  • Exhaust gases
  • Statistical sampling
• Series:
  Journal of Transportation and Statistics
• DOI:
  https://doi.org/10.21949/1501665
• Resource Type:
  Journal Article
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation. Bureau of Transportation Statistics
• Abstract:
  Some of the issues complicating the statistical analysis of vehicle emissions and the effectiveness of emissions control programs are presented in this article. Issues discussed include: the variability of inter- and intra-vehicle emissions; the skewness of emission distribution from in use vehicles; the difficulty of obtaining statistically representative vehicle samples; the effect of repeated testing on a subset of the vehicle fleet; and, differences among common test methods and pollutant measurement devices. The article discusses the relevance of these issues in light of the following regulatory purposes: compliance testing of in-use vehicles that have certification standards; effectiveness evaluation of inspection and maintenance programs of vehicles; and emissions inventory estimates for air quality modeling and compliance planning. The article also provides a brief history and description of common vehicle emission tests.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/4762/dot_4762_DS1.pdf
• File Type:
  [PDF - 96.61 KB]
• Collection(s):
  BTS Products
• Main Document Checksum:
  urn:sha-512:297d94ae13227908fa6bb17234998c6d59f72c3bb3110a5c214f1074d08d7992025233035fafd96e19204351822fe028b8c081799f58b7ee73db9fdc0137cefe