DEVELOPMENT AND APPLICATION OF MICROSCOPIC ACCIDENT POTENTIAL MODELS TO EVALUATE THE SAFETY IMPACT OF FREEWAY TRAFFIC MANAGEMENT SYSTEMS

A reduction in accidents, particularly secondary ones, is often cited as one of the primary benefits of Freeway Traffic Management Systems (FTMS's) such as that implemented on a segment of Highway 401 in Toronto, Canada. Safety evaluation of such systems is often confounded by the changes in traffic intensity resulting from the FTMS and other causes. Thus, the conventional before and after method is not always appropriate for such evaluation studies. The fundamental objective of the research was to evaluate the safety effectiveness of that system using microscopic accident potential models, a sophistication made necessary in this case because the implementation of the FTMS coincided with a fairly sharp decrease in traffic volumes which, by itself, could have caused the significant decrease observed in the accidents of interest. For the research summarized here, the safety effect of the FTMS was estimated from the parameters of regression models calibrated for the pre-implementation period (1989-1990) and the post-implementation period (1991-1992).

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03476049
• Corporate Authors:

  PTRC Education and Research Services Limited

  Glenthorne House, Hammersmith Grove
  London W6OL9,   England 
• Authors:
  • Persaud, B
  • Mucsi, K
  • Ugge, A
• Conference:
  • Proceedings of the Conference: Road Safety in Europe and Strategic Highway Research Program (SHRP)
  • Location: Prague, Czech Republic
  • Date: 1995-9-20 to 1995-9-22
• Publication Date: 1996-3

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 228-240
• Serial:
  • VTI Conferens
  • Publisher: Swedish National Road and Transport Research Institute (VTI)
  • ISSN: 0347-6049

Subject/Index Terms

• TRT Terms: Crash data; Crashes; Electric potential; Freeways; Highway traffic control; Statistics; Traffic crashes; Traffic models
• Uncontrolled Terms: Potential
• Geographic Terms: Canada
• Old TRIS Terms: Freeway traffic accidents
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Safety and Human Factors; I70: Traffic and Transport;

Filing Info

• Accession Number: 00723251
• Record Type: Publication
• Report/Paper Numbers: No. 4A, Part 2
• Files: TRIS
• Created Date: Jul 9 1996 12:00AM