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Estimation of Roundabout Capacity Using Intersection Perspective
Current HCM capacity is based on approach assessment. Entries are treated as independent T-junctions. However, there is lots of traffic interaction at roundabouts and often a mix of modes also influencing entry decisions. Interference of traffic in the roundabout impacts capacity. Pedestrian and cyclist activity impacts capacity. Approach-based (gap acceptance) assessments may not be providing enough information to accurately predict roundabout capacity.
Provide comprehensive capacity extimation and LOS calculation (average delay) for roundabouts taking into account interference effects..
Improved capacity estimations.
Existing reports and databases could be enough to construct a regression model, also microsimulation would be need.
produce a report and
|Sponsoring Committee:||AKD80, Roundabouts and other Intersection Design and Control Strategies
|Research Period:||12 - 24 months|
|RNS Developer:||Marilo Martin Gasulla, Univ of Florida, Dr. Werner Brilon, Ruhr-University Bochum|
|Index Terms:||Intersections, Vehicle mix, Gap acceptance, Approach lanes, Highway capacity, Roundabouts, |
Pedestrians and Bicyclists
Operations and Traffic Management
Planning and Forecasting
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