东南大学学报（自然科学版）2012，Vol.42Issue(3)：551-554,4.DOI:10.3969/j.issn.1001-0505.2012.03.031
考虑主路左转延误的主路优先交叉口信号设置流量阈值
Signal setting critical volume for two-way stop-controlled intersection based on major left-turn delay
摘要
Abstract
In order to improve the signal setting warrant of two-way stop-controlled (TWSC) intersections , the impact of major left-turn delay on signal setting critical volume for TWSC intersections is considered. After analyzing the characteristics of major left-turn flow, the control delay method and the Webster method are used to develop major left-turn flow' s average vehicle delay models before and after signal control setting, respectively. Based on traffic efficiency, vehicle average delay is regarded as the discrimination index, and the curve of vehicle average delay is given as the critical volume for determining whether the intersection needs to be set signal. Besides, critical volume curves of different left-turn flow rates are given. Compared with the curve offered by Manual on Uniform Traffic Control Devices, U. S. , the critical volume curve considering major left-turn delay can fit the traffic characteristics of Chinese intersections well, therefore, it is more practical for Chinese TWSC intersections.关键词
信号灯设置/主路优先交叉口/延误/主路左转车流/流量阈值Key words
signal setting/ two-way stop-controlled intersection/ delay/ major left-rum flow/ critical volume分类
交通工程引用本文复制引用
李锐,李文权,邱丰..考虑主路左转延误的主路优先交叉口信号设置流量阈值[J].东南大学学报（自然科学版）,2012,42(3):551-554,4.基金项目
国家自然科学基金资助项目(50978057)、"十一五"国家科技支撑计划资助项目(2006BAJ18B03). （50978057）
