Air pollution inventories include information on quantities of emissions from major industrial (point sources), together with average estimates of emissions from smaller sources throughout the area, including road transport. Traffic surveys are usually carried out over small areas, to assist in designing a local traffic management or road building scheme, or for a larger urban area to calibrate a transport model. The article describes a West Midlands Emissions Inventory, including the effect of catalysts where two cold start distances of 1km or 4km are assumed. The effect of varying traffic conditions on emission rates is examined. Recent developments in the United States, France and the United Kingdom are reviewed. It is suggested that driver behaviour and network features such as gradient and congestion are good predictors of enrichment. Recommendations are made on further research. For the covering abstract see IRRD 877018.


  • English

Media Info

  • Features: References;
  • Pagination: p. 39-55

Subject/Index Terms

Filing Info

  • Accession Number: 00722310
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-86050-282-1
  • Files: ITRD
  • Created Date: Jun 28 1996 12:00AM