两相位信号交叉口半感应控制算法  

Semi-actuated Signal Control Algorithm for Two-Phase Signalized Intersections

作　　者：于泉[1] 刘培华[1] 刘小明[1,2] 

机构地区：[1]北京工业大学北京市交通工程重点实验室,北京100124 [2]北京市交通委员会,北京100053

出　　处：《西南交通大学学报》2010年第6期952-957,共6页Journal of Southwest Jiaotong University

基　　金：北京科学技术委员会资助项目(Z07050601800701);北京市教委科技创新平台资助项目(102KB00776)

摘　　要：为了研究城市交叉口行人、自行车群对半感应控制配时算法的影响,通过分析两相位交叉口左转车穿越行人、自行车群的特点,应用临界间隙理论,根据左转车到达与离去平衡的基本原理,在HCM2000(highway capacity manual 2000)最小绿灯时间服务模型的基础上,建立了半感应控制算法的最小绿灯时间计算模型.用该算法计算信号配时方案,并在北京市怀柔区进行现场试验,用信号控制延误评价服务水平.结果表明,该模型可以使信号配时方案更适合行人和自行车多的实际情况,使交叉口总延误时间下降了37.8%,服务水平从C级提高到B级.In order to study the influence of pedestrian and bicycle groups on the semi-actuated signal timing algorithm,an analysis was made of the characteristics of left-turn vehicles crossing pedestrian and bicycle groups at two-phase intersections first.Then,based on the HCM 2000（highway capacity manual 2000） queue service time model,a new model for calculating the initial green signal time in the semi-actuated signal control algorithm was built using the critical gap theory and the principle of balance between the arriving and departing left-turn vehicles.Semi-actuated signal timing plan was computed with the proposed model using the data collected in Huairou District of Beijing,and was validated by evaluation of the level of service（LOS） using the index of signal control delay in the field experiment.The numerical test results show that the total control delay of the whole intersection decreases 37.8%,and the LOS improves from grade C to grade B,so the proposed model can make the signal timing plan more adapted to intersections with many pedestrian and bicycle groups.

关 键 词：两相位 信号交叉口 半感应控制 间隙 

分 类 号：U491[交通运输工程—交通运输规划与管理]