Negotiation-Based Conflict Exposure Methodology in Roundabout Crash Pattern Analysis

This paper provides a comprehensive analysis of roundabout crash patterns. First, an improved method was used to calculate crash type percentages for Wisconsin roundabouts. Second, the crash type patterns were compared between roundabout types and between at-fault driver residency types. It was found that the entering-circulating crash was the severest at single-lane roundabouts while the sideswipe crash had a higher percentage at multilane roundabouts. Local drivers were more involved in rear-end crashes while drivers from outside of the city committed more sideswipe crashes. Third, to provide an insight into crash patterns based on driving behavior, 12 types of inappropriate negotiations were defined and quantified through video data. The conflict exposure rates were then defined and measured to interpret the crash patterns. The results from the conflict exposure analysis showed why a high percentage of sideswipe crashes appeared at multilane roundabouts.


  • English

Media Info

  • Media Type: DVD
  • Features: Figures; Photos; References; Tables;
  • Pagination: 17p
  • Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

Filing Info

  • Accession Number: 01153376
  • Record Type: Publication
  • Report/Paper Numbers: 10-1616
  • Files: TRIS, TRB
  • Created Date: Jan 25 2010 10:43AM