城市单点交叉口的信号配时优化研究

信号配时优化是提高交叉口服务水平的重要途径.文章系统地介绍了信号配时模型的现有研究成果,然后分析了Synchro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,并以延误、停车次数、排队长度组合成的综合性能指标对广州市天河北路与天河东路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.

Traffic Signal Timing Optimization at City Single Point Intersection

Timing optimization is an important method to improve the service level of signal controlled intersection.Firstly,the existing research result on signal timing model was systematically presented.Then,the signal timing optimization model,PDM percentile delay method model,queue length calculation model,parking rate model,capacity calculation model and LOS(level of service) model were analyzed in Synchro simulation system.Through taking the intersection at North Tianhe Road and the East Tianhe Road in Guangzho...