AIR QUALITY MODELING AT SIGNALIZED INTERSECTIONS

This paper describes an approach for relating the impact of traffic on ambient carbon monoxide concentrations near signalized intersections by (a) computing the emission profiles due to acceleration and deceleration of queuing vehicles for a range of queue lengths and approach and departure speeds, (b) approximating the profiles by simple by simple step functions based on emissions on the portion of roadway occupied by the queues, (c) adding emission components for cruise and idle modes of vehicle operation, and (d) using the derived emission profiles in a line source dispersion model to estimate ambient CO concentrations at selected receptor sites. Steps for estimating emission profiles have been suggested and applied successfully.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/sr/sr167/sr167-012.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0360859X
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved. Presented at the Conference on the State of the Art of Assessing Transportation-Related Air Quality Impacts, Washington, D.C. October 22-24, 1975.
• Corporate Authors:

  Transportation Research Board (TRB)

  Washington, DC   
• Authors:
  • Patterson, Robert M
• Conference:
  • Conference on the State of the Art of Assessing Transportation-Related Air Quality Impacts
  • Location: Washington District of Columbia, United States
  • Date: 1975-10-22 to 1975-10-24
• Publication Date: 1976

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 138-151
• Monograph Title: Assessing transportation-related air quality impacts
• Serial:
  • Transportation Research Board Special Report
  • Issue Number: 167
  • Publisher: Transportation Research Board
  • ISSN: 0360-859X

Subject/Index Terms

• TRT Terms: Air pollution; Carbon monoxide; Exhaust gases; Impact studies; Mathematical models; Motor vehicles; Queuing; Signalized intersections; Speed; Traffic measurement; Traffic speed
• Uncontrolled Terms: Models
• Subject Areas: Administration and Management; Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00139658
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Sep 16 1976 12:00AM