PRIMARY COMPONENTS OF EXHAUST GASES AND SECONDARY REACTION PRODUCTS AS INDICATORS OF EFFECTS CAUSED BY (TRAFFIC-) SYSTEM

Assessments of new infrastructure are normally based among others on emission impacts. Expanding the viewed system as demanded by the European Union in the form of corridor assessments or by Strategical Environmental Assessments make it necessary to include systematic effects. Widening the viewed system always leads to a greater complexity. Indicators describing the behaviour of those systems have to include different systems as well as gaps to meeting target indicators (e.g. threshold-limits). Within the transport system every measure has direct and indirect effects on the environment followed by feedbacks to further planning measures. Using a planning approach means that we cannot look at the technical progress alone but instead have to use indicators giving information within a planning process. It can be demonstrated that within inner city street sections, which are in many cases at their capacity limits, the technical progress has been effective as predicted. Primary exhaust gases like CO, NO and hydrocarbons have been reduced in the last decade by up to 65% on the Vienna road network. The air concentrations of NO2 (an irritant gas near the half hour threshold limit of the Austrian Academy of Science) however, has been reduced only by 28%. The pollutant ozone has not been reduced at all but rather has increased as a result of more vehicles in the region of Vienna. It seems that technical progress will be overcompensated by increasing volume of traffic. To describe these effects it is useful to use pollutants which show higher chemical reaction times. For the covering abstract see ITRD E122175.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/3901351590
• Corporate Authors:

  GRAZ UNIVERSITY OF TECHNOLOGY

  INFFELDGASSE 25
  GRAZ,   Austria  A-8010
• Authors:
  • Macoun, T
• Publication Date: 2002

Language

• English

Media Info

• Features: References;
• Pagination: p. 341-8
• Serial:
  • PROCEEDINGS OF 11TH INTERNATIONAL SYMPOSIUM, TRANSPORT AND AIR POLLUTION, HELD GRAZ UNIVERSITY OF TECHNOLOGY, AUSTRIA, 19-21 JULY 2002
  • Volume: I
  • Publisher: GRAZ UNIVERSITY OF TECHNOLOGY

Subject/Index Terms

• TRT Terms: Carbon monoxide; Conferences; Environmental impact analysis; Hydrocarbons; Measurement; Nitrogen oxides; Pollutants; Traffic density; Urban areas
• Uncontrolled Terms: Pollution concentration
• ITRD Terms: 7391: Carbon monoxide; 8525: Conference; 2442: Emission; 7367: Hydrocarbon; 2436: Impact study (environment); 6136: Measurement; 7380: Nitrogen oxide; 2422: Pollution concentration; 673: Traffic concentration; 313: Urban area
• Subject Areas: Data and Information Technology; Environment; Operations and Traffic Management;

Filing Info

• Accession Number: 00981165
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 3-901351-59-0
• Files: ITRD
• Created Date: Nov 3 2004 12:00AM