交通信息与安全2017，Vol.35Issue(4)：69-75,7.DOI:10.3963/j.issn.1674-4861.2017.04.009
典型信号控制交叉口行人专用相位设置阈值研究
A Study on Threshold of Exclusive Pedestrian Phase for Typical Signalized Intersections
摘要
Abstract
Pedestrian-vehicle mixed in urban intersections is common and has negative effects on efficiency and safety of intersections.A cost model of intersection operations with or without exclusive phase signal for pedestrians is developed using delay cost and conflict cost as evaluation indices.Signal delay, conflict delay, and detour delay are all considered to calculate delay cost of pedestrians and non-motor vehicles.As for the conflict cost, based on traffic conflict theory, time headway is used to judge whether motor vehicles have conflicts with pedestrians or non-motor vehicles.Conflict possibility can be determined by arrival distribution of vehicles and pedestrians.The Sidaokou intersection in Beijing is chosen as a case study.Based on the collected data and genetic algorithm, the threshold of pedestrian flow is 750-900 ped/h for setting exclusive phase for pedestrians.With the increase of traffic flow, the requirement of pedestrian flow is descending at first, and then ascending at last.This study can provide a theoretical support for signal setting of urban intersections, and improve safety and convenience for pedestrians and non-motor vehicles.关键词
交通工程/行人专用相位/效率分析/安全分析/阈值分析Key words
traffic engineering/exclusive pedestrian phase/efficiency analysis/safety analysis/threshold analysis分类
交通工程引用本文复制引用
王雪元,邵春福,黄士琛..典型信号控制交叉口行人专用相位设置阈值研究[J].交通信息与安全,2017,35(4):69-75,7.基金项目
国家自然科学基金重点项目(51338008)资助 （51338008）
