Relationship Between Unsignalised Intersection Geometry and Accident Rates

The main purpose of this paper is to provide road design practitioners with an overview of the results of an unsignalized intersection study. The study investigated the effect of geometry, traffic volumes and other parameters on accident rates using a sample of 206 unsignalized intersections from throughout Queensland, Australia. This paper briefly discusses the results of a literature review of unsignalized intersection safety and some of the approaches used to analyze the data. The effect of a number of parameters on the rates of the three most common accident types at unsignalized intersections is then given. This study has yielded results that confirm the validity of several of the current design standards for unsignalized intersections, in addition to identifying new outcomes.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Arndt, Owen
  • Troutbeck, Rod
• Conference:
  • 3rd International Symposium on Highway Geometric Design
  • Location: Chicago Illinois, United States
  • Date: 2005-6-29 to 2005-7-1
• Publication Date: 2005

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References; Tables;
• Pagination: 22p
• Monograph Title: 3rd International Symposium on Highway Geometric Design, June 29-July 1, 2005, Chicago, Illinois: Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Crash rates; Crash types; Design standards; Geometric design; Literature reviews; Traffic safety; Traffic volume; Unsignalized intersections
• Geographic Terms: Queensland
• Subject Areas: Design; Highways; Safety and Human Factors; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 01004404
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Sep 22 2005 3:17PM