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Mid-America Transportation Center

NDOR Investigation and Mitigation of Driver Confusion at Modern Roundabouts

Final Report
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Researchers

  • Principal Investigator: Aemal Khattak (akhattak2@unl.edu 402-472-8126)
  • Project Status
    Complete
    Sponsors & Partners
  • Nebraska Department of Roads
  • Research Objective
    The objectives of this research include the: (1) identification of user issues and confusing elements of roundabouts via surveys and development of mitigation measures for safer usage of arterial roundabouts in Nebraska; and (2) development of a criteria matrix for arterial intersections that NDOR can use to check the candidacy of intersections for conversion to single-or multi-lane roundabouts.
    Potential Benefits
    This research will gather information that can improve dissemination information on roundabouts to a skeptical public. Finding ways to better disseminate this information will lead to better drivers and safer roundabouts in Nebraska.
    Abstract
    This proposed research deals with two issues: investigation and mitigation of roundabout elements that lead to driver confusion and development of a flexible criteria matrix by which the Nebraska Department of Roads (NDOR) can evaluate arterial intersections to identify good candidates for conversion to roundabouts. The use of modern roundabouts along arterial roadways is relatively new in Nebraska. The first urban arterial roundabout was opened to traffic in June of 2002 at the intersection of 33rd and Sheridan Blvd in the City of Lincoln. Citizens and some professionals were somewhat skeptical of this roundabout to improve traffic delay and safety. However, after the construction of this roundabout the City of Lincoln has reported reduced traffic delays and the Nebraska Department of Roads (NDOR) has reported a reduction in traffic accidents. The objectives of this research include the: (1) identification of user issues and confusing elements of roundabouts via surveys and development of mitigation measures for safer usage of arterial roundabouts in Nebraska; and (2) development of a criteria matrix for arterial intersections that NDOR can use to check the candidacy of intersections for conversion to single-or multi-lane roundabouts.
    Project Amount
    $ 123,152