TRAFFIC CONFLICTS IN EXPRESSWAY MERGING

The steps involved in applying the traffic conflict technique to study the safety of a merging process in a merging area at an expressway in Singapore are described in this paper. Emphasis is placed on the factors considered in the recording of the merging events on site, and the extraction of the data in the laboratory. Errors in the data-collection process are ivestigated and the steps required to minimize and correct them are carried out. The study uses adjusted data to analyse the conflict severity for all the merging events monitored over different observation periods. The probability of near-accident per merge is estimated. It is noted that errors arising from the recording and the extraction of the data can be considerable. However, by appropriate use of videotaping and playback equipment and further adjustment of the data for errors incurred in the extraction process, meaningful results may be obtained in the data analysis.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8674831
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Chin, H C
  • Quck, S T
  • Cheu, R L
• Publication Date: 1991-11

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 633-643
• Serial:
  • Journal of Transportation Engineering
  • Volume: 117
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-947X
  • Serial URL: https://ascelibrary.org/journal/jtepbs

Subject/Index Terms

• TRT Terms: Data collection; Errors; Expressways; Merging traffic; Traffic conflicts
• Geographic Terms: Singapore
• Old TRIS Terms: Data recording
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00617115
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Nov 30 1991 12:00AM