EFFECT OF SIGHT DISTANCE ON THE SAFETY OF UNSIGNALIZED INTERSECTIONS ---PRE CONFERENCE PROCEEDINGS 3RD IRF MIDDLE EAST REGIONAL MEETING. TOWARDS BETTER ROAD PERFORMANCE, RIYADH, SAUDI ARABIA, 13-18 FEBRUARY 1988. 6 VOLUMES.

Fifty percent of accidents occur at intersections. Therefore understanding the problems at intersections may lead to better improvement strategies. The main goal of this study was to investigate the effect of sight distance on the safety of unsignalized intersections using traffic conflicts. Traffic conflicts were employed because reliable accident information is not available at this time. Conflict studies have been carried out at twenty-one intersections in the eastern province. Using this data the effect of sight distance has been analyzed. The analysis was done using multiple regression analysis, analysis of variance and covariance, and multiple classification analysis. Uncontrolled and stop controlled approaches have been analyzed separately. The study showed that conflicts were significantly related to sight distance and that sight distance had very high explanatory power for conflicts. Some recommendations were also provided for intersection design based upon the sight distance relationship.(a) for the covering abstract of the proceedings see IRRD 817883.

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• Corporate Authors:

  International Road Federation

  525 School Street, SW
  Washington, DC  United States  20024
• Authors:
  • Al-abdulgader, K
  • Ergun, G
• Publication Date: 1988

Language

• Undetermined

Media Info

• Pagination: p. 2.203-2.23
• Serial:
  • Publication of: International Road Federation
  • Publisher: International Road Federation
  • ISSN: 1022-954X

Subject/Index Terms

• TRT Terms: Analysis of variance; Conferences; Crashes; Developing countries; Layout; Regression analysis; Safety; Traffic conflicts; Unsignalized intersections; Visibility distance
• Uncontrolled Terms: Causes
• Geographic Terms: Saudi Arabia
• Subject Areas: Data and Information Technology; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00486922
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1989 12:00AM