Reasons for Drivers Failing To Yield at Multi-Lane Roundabout Exits: Transportation Pooled Fund Study Final Report

Details

• Creators:
  Medina, Alejandra ; Bansen, Justin ; Williams, Brian ; Pochowski, Alek ; Rodegerdts, Lee ; Markosian, James ; Li, Yingfeng ; Gibbons, Ronald
• Corporate Creators:
  Virginia Tech Transportation Institute ; Kittelson & Associates, Inc
• Contributors:
  Zhang, Wei
• Corporate Contributors:
  United States. Federal Highway Administration. Office of Research, Development, and Technology ; United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center
• Subject/TRT Terms:
  • Roundabouts
  • Multilane highways
  • Intersections
  • Traffic safety
  • Traffic control
  • Traffic crashes
• Publication/ Report Number:
  FHWA-HRT-23-023
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Technical Report
• Contracting Officer:
  Zhang, Wei
• Corporate Publisher:
  United States. Federal Highway Administration. Office of Research, Development, and Technology
• Abstract:
  The Federal Highway Administration (FHWA) has included roundabouts on a list of proven safety countermeasures since 2008. However, higher than expected numbers of property damage-only crashes occurring near multi-lane roundabout exits has emerged at some U.S. roundabouts. This report details a Transportation Pooled Fund study that investigates root causes and contributing factors for these crashes based on an evaluation of a sample of eight multi-lane sites. For each study site, the project team reviewed historical crash data; conducted field observations; collected drone video data; analyzed vehicular volumes and conflicts; and reviewed potential influences from roundabout geometry, signing, and markings and the roadway network. Findings related to each of these topics are presented throughout this report to provide guidance that supports proactive reductions in the potential for these crashes at new multi-lane roundabouts and potential countermeasures to reduce these crashes for existing sites.
• Format:
  PDF
• Funding:
  DTFH6116D00041L
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/66498/dot_66498_DS1.pdf
• File Type:
  [PDF - 18.12 MB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:66f3a4be35b3f061af8ede094c7c29c833e46f459e1a3c9f55eaeffc9ccbd3e7f73177d87d049571c347df3bc4e22ae5f9beccd326f56a309366d9eace35c2b6