多信号交叉口干线行程时间特性分析

城市道路多信号交叉口影响下的行程时间分布及可靠性是交通流理论研究中的重要方向之一.本文基于灰色关联理论建立信号协调控制下的多信号交叉口行程时间影响因素模型.首先,对车牌识别数据进行预处理,得到路段和干线行程时间数据;然后,利用Burr分布和高斯混合模型对数据进行分布拟合,并进行拟合优度检验;最后,利用灰色关联法分析交叉...

Travel Time Characteristics Analysis of Arterial Roads with Multiple Signalized Intersections

The travel time distribution and reliability characteristics of urban arterial roads with multiple signalizedintersections are one of the important branches of traffic flow theory. Based on the grey relational analysis, this paperestablishes a model of travel time influencing factors of multiple signalized intersections under signal coordinationcontrol. Firstly, the automatic number plate recognition (ANPR) data is preprocessed to get travel time data; then, theBurr distribution and the Gaussian mixture model are used to fit the travel time distribution and conduct goodness of fittest; finally, the grey correlation method is used to analyze the relationship between the number of signalizedintersections, route length, route traffic flow and the travel time characteristics. The results show that the link traveltime distribution is bimodal, and the Gaussian mixture model is suitable for the fitting of link travel time; the Burrdistribution can better describe the characteristics of right deviation of the arterial roads with multiple signalizedintersections. There is a certain correlation between the number of signalized intersections, route length, route trafficflow and travel time characteristics, and the influence of the route length is more significant. With the increase of routelength, the travel time tends to a stable unimodal distribution, and the fluctuation decreases and the reliability increases.