城市道路路段行程时间计算模型研究

Research on the Calculation Models of Vehicle Travel Time on Urban Road Segments

针对城市道路路段车辆行程时间的计算和预测问题,以城市道路网络中典型的道路路段和信号控制道路交叉口为研究对象,采用道路交通信息视频采集技术获得基本的道路交通信息数据。通过对道路路段及其下游信号控制道路交叉口交通流特性分析,重新建立和标定了城市道路路段车辆行程时间计算模型和下游信号道路交叉口交通延误计算模型,其二者之和正是由道路路段及其下游信控交叉口构造而成的典型的城市道路车辆行程时间。通过实例计算与对比分析,结果表明,该模型具有较好的适用性和准确性。

According to the calculation and prediction for vehicular link travel time on urban road segments as well as at its downstream intersection,this paper chooses the typical road segments and signalized intersections in the urban road network and uses the scientific method to get basic traffic information such as video camera. Based on theanalysis of traffic flowcharacteristics of the road and signalized intersections,this paper reestablishes andcalibrates the travel timecalculation model onroad segments and thedelaymodel at its downstream signalized intersections. Through the calculation and analysis of an example,the results show that the model has good applicability and accuracy.