关键词: 交通工程, 设计方法, 行人可穿越理论, 车流消散理论, 行人过街设施, 临界条件, 评价指标

Abstract:

A design method of pedestrian crossing facilities on urban expressway is proposed considering the effects of bus updown passenger flow crossing on vehicle flow when a bus stop located at isolation belt between urban expressway and auxiliary road. First, these types of pedestrian crossing facilities are analyzed from reducing the carpedestrian conflict points. Then the capacities of unsignalized and signalized crosswalk are calculated based on pedestrian acceptable gap theory and vehicle dissipation theory. The critical values of car and pedestrian flow capacity in assistant road are computed to select the types of pedestrian crossing facilities from signalized crosswalk, nonesignalized crosswalk and overpass. The foot of overpass is located through the volume of crossingstreet and ridingbus pedestrian. In the final section, a practical example is conducted to prove the feasibility and efficiency.

Key words: Traffic engineering, Design method, Pedestrian acceptable gap theory, Vehicle dissipation theory, Pedestrian crossing facilities, Critical conditions, Evaluation indexes