不良天气对交通信号配时的影响分析

Analysis on Adverse Weather on Traffic Signal Timing

天气条件是道路交通运营的重要影响因素之一。从理论上分析不良天气对信号配时的影响,然后运用SYNCHRO和SIMTRAFFIC仿真软件,对正常和不良天气两种条件下的交叉口信号配时进行配时优化和微观交通仿真,研究表明:不良天气对交叉口信号配时的绩效将产生明显的负面影响,针对不良天气专门制定的配时优化方案将改善交通状况、减少延误和提高车速,但是改善程度还与许多因素有关。

Weather condition is one of the important factors affecting road transportation systems. A theoretical analysis is made to investigate the impact of adverse weather on signal timing, and then the optimization and microscopic traffic simulation are made on the signalized intersection＇s signal timing under normal and adverse weather using the software of SYNCHRO and SIMTRAFFIC. This study indicates that adverse weather has obvious negative impacts on the result of signal timing. The specific optimized timing for adverse weather will improve the system performance with the benefits of delay reduction and speed increasing, but the improvement degree is stiu depended on many factors.