EFFICIENCY ANALYSIS OF TRAFFIC SAFETY COUNTERMEASURES

For the macroscopic investigation of traffic safety, the ministry of construction (moc) has collected a lot of accident data throughout the designated sections of national highways which are administrated by the minister of construction; the total length of the sections is about 20000 km. The public works research institute (pwri), which is an auxillary organ of the ministry, has analysed these data. This report is a summary of one of the studies aimed to identify the efficiency of the traffic safety countermeasures. The accident data in the year before and after the installation of six kinds of safety facilities such as pedestrian bridge, central barrier, guard rail, bus bay, road lighting and delineator were collected and processed in statistical and probability analysis methods. It was found that the average reduction rate of traffic accidents by the installation of them is 52%, which could be said to be "effective". Comparing with the average accident rate of national highways, which is about 80 accidents per 100 million vehicle kilometer, it can be said that installations of these facilities improved the hazardous highway segments into ordinary safe segments. (TRRL)

• Corporate Authors:

  Japan Road Association

  3-3-3, Kasumigaseki, Chiyoda-ku
  Tokyo,   Japan 
• Authors:
  • Shimogami, T
• Publication Date: 1987

Media Info

• Features: References;
• Pagination: p. 51-57
• Serial:
  • Japan Road Association Annual Report of Roads
  • Publisher: Japan Road Association

Subject/Index Terms

• TRT Terms: Arterial highways; Before and after studies; Bus stops; Crash rates; Crashes; Data collection; Footbridges; Guardrails; High risk locations; Improvements; Road markings; Safety; Statistics; Street lighting; Traffic
• Geographic Terms: Japan
• ITRD Terms: 1643: Accident; 1663: Accident black spot; 1612: Accident rate; 9148: Before and after study; 562: Carriageway marking; 8623: Data acquisition; 3475: Footbridge; 9108: Improvement; 8053: Japan; 545: Lighting (street); 2748: Main road; 1665: Safety; 1686: Safety fence; 6555: Statistics; 755: Traffic
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Public Transportation; Safety and Human Factors;

Filing Info

• Accession Number: 00480064
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Mar 31 1989 12:00AM