基于移动导航数据的信号配时反推

在交通管理和评价时,信号配时对监测评价路口运行状态,评价路口配时方案至关重要.但是,大范围的实时信号配时方案的获取尚缺乏简明有效的途径.本文提出两种基于移动导航数据计算固定配时路口信号配时的方法.第一种方法是在不考虑驾驶员驾驶行为差异性时,得到路口红灯和车均延误的关系模型,从而计算某相位的红灯时长.另外一种方法是基于车辆通过停止线的时间,结合本文提出的上升梯度法,得到某阶段红灯时长.本文通过实际的路口案例计算,将预测结果和已知路口的信号配时比较,表明此方法计算得到的红绿灯时长准确度较高,为后续进行路口运行状态和通行能力研究提供了数据支持.

Signal Timing Estimation Using Mobile Navigation Data

When manage and value the traffic network, signal parameters is important to monitor and evaluation the operating state and the junction intersection traffic capacity. However, a wide range of realtime signal timing scheme for a lack of clear and effective way. In this paper, we propose two methods based mobile navigation data to calculate the signal parameters. The first method is to establish the relationship between red and delay without considering the differences of the drivers’behavior, then calculate the red parameters. The another method is based the time when vehicle passing the stop line, then combined with the rising gradient method we proposed in this paper, obtain the min red of a stage. Through the actual case to calculate the red parameters, then compared to the known signal parameters. The result demonstrates the method we proposed in this paper has high accuracy, and provides the data support for the research of the traffic management.