Evaluation of the Effects of a Forward Obstacle/Congestion Warning Service on Traffic Accidents

A forward obstacle/congestion warning system was installed at a black spot on the Metropolitan Expressway in Tokyo. After the warning service began, the number of accidents decreased considerably. However, other countermeasures were implemented around the same time as the warning service. Therefore, the effects of the warning service on traffic accidents should be analyzed separately. A change-point model is adopted to analyze the effects and estimated using MCMC. The effect of repavement is proved to be most important and that of warning service using dedicated short range communication (DSRC) is secondary. These results are compared with those of the preceding analysis.

• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Yamada, Harutoshi
• Conference:
  • 16th ITS World Congress and Exhibition on Intelligent Transport Systems and Services
  • Location: Stockholm , Sweden
  • Date: 2009-9-21 to 2009-9-25
• Publication Date: 2009

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; Maps; References; Tables;
• Pagination: 8p
• Monograph Title: ITS in Daily Life

Subject/Index Terms

• TRT Terms: Dedicated short range communications; High risk locations; Obstructions (Navigation); Traffic congestion; Traffic crashes; Warning systems
• Identifier Terms: Tokyo Expressway
• Geographic Terms: Tokyo (Japan)
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control;

Filing Info

• Accession Number: 01148298
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 25 2010 8:08AM