考虑信号交叉口影响的分散路径诱导策略

Decentralized Route Guidance Strategies Considering the Effect of Signalized Intersections

针对城市路网中的定周期信号交叉口,提出了信号交叉口上游路段交通状态判断及行驶时间估计方法,将信号交叉口影响引入分散路径诱导策略,形成考虑信号交叉口影响的分散路径诱导策略.使用点队列模型建立仿真路网,验证了信号交叉口上游路段交通状态判断及行驶时间估计方法的有效性.同时,利用该方法比较了基于行驶时间与基于交通状态2种分散路径诱导策略在不同周期下的效果,认为当诱导周期较长或交通需求变化较快时,基于交通状态的诱导策略可以代替基于行驶时间的策略.

Aiming at fixed-time signalized intersections, an approach of traffic state identification and travel time estimation on links at the upstream of the intersections was proposed. Through the approach, the effect of signalized intersections was incorporated into existing decentralized route guidance strategies. A simulation network model was developed based on a point-queue model. The effectiveness of the traffic state identification and travel time estimation was demonstrated on the network model; the performance of the route guidance strategies based on travel time and traffic state were further compared by using the approach. The results show that the strategy based on traffic state could be used to replace the one based on travel time when the update interval is long or the change of traffic demand is rapid.