基于Synchro的单点交叉口信号配时优化研究

首先系统地介绍了信号配时模型的现有研究成果,然后分析了Srnchro仿真系统中信号配时优化模型、用于延误计算的百分比延误方法(PDM)模型、排队长度计算模型、停车次数计算模型、通行能力计算模型和服务水平等模型.以广州市天河北路与天河东路交叉口为例,使用延误、停车次数、排队长度组合成的综合性能指标对交叉口的当前信号相位、相序进行了全面的优化研究.应用Synchro系统优化后,最大车流量和通过能力比由1.24减小到1.02,平均控制延误由85.8 s减少到60.3 s,服务水平由F级提高到E级.试验结果表明应用Synchro系统可有效提高路口的控制效果.

Study on Traffic Signal Timing Optimization for Single Point Intersection Based on Synchro Software System

First, the existing research result on signal timing model was introduced systematically.Then, the signal timing optimization model, PDM percentile delay method model, queue length calculation model, parking rate calculation model, capacity calculation model and level of service (LOS) model in Synchro software system were analyzed.Taken the North Tianhe Road and the East Tianhe Road intersection in Guangzhou for example, the realtime phase and phase sequence of the intersection were optimized completely with the comprehensive performance indicator which consists of delay, parking rate and queue length.The maximum V/C ratio may decrease from 1.24 to 1.02, the average control delay may decrease from 85.8 s to 60.3 s and the LOS may be improved from Level F to E after Synchro system optimization.The experimental results show that the application of Synchro system can improve the controlling effect of the intersection effectively.