A single-lane roundabout is modeled with various bicycle/pedestrian crosswalk alternatives to safely accommodate heavy volumes of bicycle/pedestrian traffic. A microsimulation considers experimental origin-destination balanced flow scenarios with three bicycle/pedestrian volumes and four bicycle/pedestrian crosswalk alternatives: bicycles and pedestrians share a crosswalk; bicycles and pedestrians use separate crosswalks; bicycles travel in the road as vehicles; bicycles travel in a dedicated lane separate from the vehicle lane, while pedestrians use a crosswalk. The crosswalk alternatives are compared to no bicycle/pedestrian accommodation. Simulated controlled right-turning traffic volumes for a roundabout approach range from 50 to 500 vehicles per hour. Results indicate that average vehicle delay of a roundabout is sensitive to changing bicycle/pedestrian volumes and type of crosswalk alternative, before oversaturation occurs. As expected, results indicate crosswalk usage affects potential for pedestrian-vehicle conflicts, bicycle-vehicle conflicts, and roundabout average delays.
Bicycle/Pedestrian Crosswalk Alternatives for a Single-Lane Roundabout: Experimental Analysis of Delay
International Conference on Transportation and Development 2016 ; 2016 ; Houston, Texas
2016-06-20
Conference paper
Electronic Resource
English
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