Implementation, Driver Behavior, and Simulation: Issues Related to Roundabouts in Northern New England
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2014-06-01
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Abstract:Roundabouts are an emerging type of intersection design and a relatively new addition to the transportation system in the United States. This imposes two traffic engineering and research related issues. First, data and research on traffic operations and driver behavior at roundabouts are limited. Although beginning to expand in recent years, the knowledge of roundabout operations has been primarily based on data collected abroad where roundabouts are more common. Moreover, capacity and operational models are inadequate since they are derived primarily from concepts of existing stop-controlled and signalized intersections. Second, some motorists are not as accustomed to the new driving patterns associated with a roundabout. This affects traffic operations, especially at newly constructed roundabouts, but can also impact public acceptance of roundabouts which may result in part from the lack of exposure and driver confusion. This research is intended to address these issues and fill the following gaps in current knowledge for roundabouts in the United States: factors affecting public acceptance; real world roundabout operations data; and model methodology to adequately assess roundabout performance.
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