Institute of Transportation, MOTC

Student: Chun-Yao ,Chen, 2006.07
Institute of Traffic and Transportation National Chiao-Tung University

　　Exclusive Pedestrian Phase can separate entirely the conflicts between pedestrians and turning vehicles. During the phase, pedestrians can cross the intersection in all directions, even diagonally, with a short period of exclusive time. Signal design with Exclusive Pedestrian Phase can provide a safe, comfortable and convenient environment of pedestrian at the signalized intersections, but may increase delays of vehicles at the same time.

　　This research selects two signalized intersections with Exclusive Pedestrian Phase in Taipei city as studying sites for field observation to collect relevant traffic, signal and the conflicts between pedestrian and right turning vehicles, using a conflict zone occupancy approach. Delay models of vehicle and pedestrian with and without the Exclusive Pedestrian Phase at the signalized intersections are developed based on the collected data, which are then used to analyze the effects of the exclusive phase on delay to vehicles and pedestrians under various conditions.

　　Finally, with detailed analysis of traffic accident data in recent years, the effects of Exclusive Pedestrian Phase on safety aspect of passing pedestrians are also explored. It is found out that the Exclusive Pedestrian Phase can effectively reduce the accidents, but reduced in total delays of vehicle and pedestrian occurs only when traffic volumes reach some specific thresholds.