A Study of Collisions with Lead Versus Lag Left-Turn Phasing: Additional Data and Analyses

This paper reports on a study comparing 8 years of collision data for intersections with leading and lagging left-turn arrow operations in two Arizona cities. Collision experience is compared at 13 intersections with lagging left-turn arrows and 9 intersections with leading left-turn arrows. Results showed that lagging left-turn arrows had a statistically significant lower collision rate than leading left-turn arrows for all collisions, collisions involving left-turning vehicles and collisions involving left-turning vehicles with opposing through vehicles. There was no statistically significant difference between lagging left-turn arrow operation and leading left-turn arrow operation in the rate of collisions that did not involve left-turn vehicles.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/614107147
• Authors:
  • Basha, Paul E
• Publication Date: 2007-8

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 22-29
• Serial:
  • ITE Journal
  • Volume: 77
  • Issue Number: 8
  • Publisher: Institute of Transportation Engineers (ITE)
  • ISSN: 0162-8178
  • Serial URL: https://www.ite.org/publications/ite-journal/

Subject/Index Terms

• TRT Terms: Alternatives analysis; Crash data; Crash rates; Crashes; Lead-lag phasing; Left turn phase; Left turns; Signalized intersections; Statistical analysis; Traffic crashes; Traffic safety
• Geographic Terms: Arizona
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control; I82: Accidents and Transport Infrastructure;

Filing Info

• Accession Number: 01055246
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 21 2007 1:17AM