Evaluating the Performance & Safety Effectiveness of Roundabouts- An Update

The last evaluation of Michigan roundabouts was completed in December of 2011 (H-U0316.02). Since that time, MDOT has constructed many additional roundabouts, best practices have evolved, and operational and safety performance may have changed. Study of the current roundabout environmental, operational and safety performance efficacies, along with maintenance best practices and costs, will help MDOT determine the future application of roundabouts in Michigan.


    • English


    • Status: Active
    • Contract Numbers:


    • Sponsor Organizations:

      Michigan Department of Transportation

      Van Wagoner Building
      425 W. Ottawa Street
      Lansing, MI  United States  48909
    • Performing Organizations:

      Michigan State University, East Lansing

      Department of Civil & Environmental Engineering
      Institute for Community Development
      East Lansing, MI  United States  48824-1226
    • Start Date: 20210301
    • Expected Completion Date: 20230131
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01774499
    • Record Type: Research project
    • Source Agency: Michigan Department of Transportation
    • Contract Numbers: 2021‐0403
    • Files: RIP, STATEDOT
    • Created Date: Jun 21 2021 10:44AM