Exclusive Right-turn Phase Setting Simulation Based on Vehicle/Pedestrian Conflict Analysis
Yi Zhang · Journal of Highway and Transportation Research and Development · 2009
One important method of alleviating right-turn vehicles and bicyclists/pedestrians conflicts is to introduce exclusive right-turn phases which have rarely been designed or set up for signalized intersections before.To estimate how this method can improve traffic efficiency,first,the conflictions between right-turn vehicles and other road users at signalized intersections were studied based on video data and modeled through vision monitoring.Then,different settings of exclusive right-turn phasing scheme were compared based on the simulation tests designed to incorporate the conflicts characteristics.The result shows that the vehicle/pedestrian traffic efficiency of the signalized intersection which offered exclusive right-turn phase varies with several conditions,i.e.,the conflict probability between vehicles and bicyclists/pedestrians,the right-turn vehicle arriving rate and the time of right-turn vehicle passing intersection.The key parameters for set up exclusive right-turn phases were suggested at same time.