AN EXPLANATION FOR SOME ASPECTS OF THE BEHAVIOUR OF CONGESTED ROAD TRAFFIC IN TERMS OF A SIMPLE MODEL

A model is proposed for city centre traffic in which vehicles occupy discrete cells on a closed circuit, and are delayed by blockages which occur independently and at random. The blockages represent the effects of pedestrian activity and turning, parking and crossing traffic. Steady-state relationships between speed, flow and concentration are derived which fit existing central London data quite well. The model is also used to illustrate some of the problems involved in trying to estimate such relationships from samples, and some qualitative conclusions are drawn about the stability of congested urban traffic flow. (A) /TRRL/

• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • WRIGHT, C C
• Publication Date: 1975-10

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 267-273
• Serial:
  • Transportation Research /UK/
  • Volume: 9
  • Issue Number: 5
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Central business districts; Mathematical models; Parking; Pedestrians; Speed; Traffic; Traffic congestion; Traffic flow; Traffic speed; Urban areas; Vehicles
• Geographic Terms: United Kingdom
• ITRD Terms: 1057: Air transport network; 632: Congestion (traffic); 6473: Mathematical model; 955: Parking; 1733: Pedestrian; 5408: Speed; 311: Town centre; 755: Traffic; 671: Traffic flow; 8119: United Kingdom; 313: Urban area
• Subject Areas: Highways; Operations and Traffic Management; Pedestrians and Bicyclists; Planning and Forecasting; Vehicles and Equipment; I71: Traffic Theory;

Filing Info

• Accession Number: 00134265
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Jul 22 1976 12:00AM