基于交通信号配时的匝道控制研究

Research on Ramp Control Based on Traffic Signal Timing

城市道路交通拥堵问题是当今城市化快速发展所面临的严峻问题之一,基于交通信号配时技术的匝道控制能使道路拥堵情况得到缓解,降低车辆碰撞频率。文章基于交通信号配时的匝道控制策略,通过分析匝道拥堵成因,制定相应的匝道控制策略,采用单点信号控制与自适应相位控制的交通信号配时模型,并进行相关的仿真测试,得到无控制、单点信号控制以及自适应相位控制三者的优化结果,提高城市快速路匝道口通行能力。仿真测试表明,基于交通信号配时的匝道控制策略在匝道平均延误、主线平均速度、路网平均延时、主线行程时间等指标的数据均优于传统匝道控制策略,是当前解决城市化快速发展所带来的城市道路交通拥堵问题的有效解决途径。

Urban road traffic congestion is one of the severe problems faced by the rapid development of urbanization.Ramp control based on traffic signal timing technology can alleviate road congestion and reduce vehicle collision frequency.Based on the ramp control strategy of traffic signal timing,this paper analyzes the causes of ramp congestion,formulates the corresponding ramp control strategy,adopts the traffic signal timing model of single point signal control and adaptive phase control,and carries out relevant simulation tests to obtain the optimization results of no control,single point signal control and adaptive phase control,improve the ramp capacity of urban expressway.The simulation test shows that the ramp control strategy based on traffic signal timing is better than the traditional ramp control strategy in the data of ramp average delay,mainline average speed,road network average delay,mainline travel time and other indicators.It is an effective way to solve the problem of urban road traffic congestion caused by the rapid development of urbanization.