THE EFFECTS OF URBAN TRAFFIC CONTROL IN BANGKOK

This study was concerned with the effects of an urban traffic control (utc) system which came into operation in May 1979 in the central area of Bangkok. "Before and after" surveys were carried out so that the effects of utc on car and bus travel times and on drivers' compliance with red traffic signals could be investigated. Changes in traffic demand between the "before" and the "after" studies were small, enabling valid comparisons of system performance to be made. In general it was found that there was considerable reduction in average travel time, except for the period 0700 hrs to 0900 hrs. Reductions in stopped time and number of stops were also recorded for all periods of the day other than 0700 hrs to 0900 hrs. In addition, bus travel times on selected routes were reduced substantially. Journey time variability, which is large in Bangkok, was not affected by the utc. The results of this study of drivers' compliance with traffic signals were inconclusive, and no conclusions could therefore be drawn about the effects of the utc on this aspect of road safety. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02667045
• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • JONES, J H
  • Marler, N W
  • DOWNING, A J
• Publication Date: 1982

Media Info

• Features: Figures; References; Tables;
• Pagination: 16 p.
• Serial:
  • Publication of: Transport and Road Research Laboratory
  • Publisher: Transport and Road Research Laboratory (TRRL)
  • ISSN: 0266-7045

Subject/Index Terms

• TRT Terms: Automobiles; Before and after studies; Buses; Compliance; Developing countries; Drivers; Red; Red interval (Traffic signal cycle); Reduction (Chemistry); Traffic control; Traffic surveys; Travel time; Trip length; Urban areas; Waiting time
• Uncontrolled Terms: Decreases
• Geographic Terms: Thailand
• Old TRIS Terms: Reduction; Traffic control systems
• ITRD Terms: 9148: Before and after study; 1272: Bus; 1243: Car; 9009: Decrease; 150: Developing countries; 1772: Driver; 697: Journey time; 539: Red light; 8113: Thailand; 654: Traffic control; 676: Traffic survey; 313: Urban area; 9100: Waiting time
• Subject Areas: Highways; Operations and Traffic Management; Public Transportation; I73: Traffic Control;

Filing Info

• Accession Number: 00368705
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: SR 756 Monograph
• Files: ITRD, TRIS, ATRI
• Created Date: Jan 31 1983 12:00AM