基于车辆自动定位系统的公交站间准点率计算

Computing of Adjacent Sites Punctuality Rate Based on AVL Data

摘要:

基于公交AVL（automatic vehicle location）系统的实时车辆定位数据，通过分析公交车实时位置和速率等数据，建立了公交车停靠时间计算模型。在此基础上提出了公交站间准点率定义，应用极值理论建立了公交站间准点率计算模型，对相邻站及重点站间的公交运行准时性进行了评价。最后采用上海市公交49路的AVL数据对模型进行验证，并通过Logistic模型对结果进行分析，结果显示站间距、道路断面、交叉口、公交专用道以及饱和度等都能对公交准点率产生影响，而公交专用道的影响作用尤为明显。

Abstract:

The paper described a new methodology for performing bus punctuality studies using global positioning system and AVL（automatic vehicle location） data. It raised a bus stop-time computation model by analyzing the bus real-time position and speed. On that basis, the clear definition of Adjacent Sites Punctuality Rate was given and the more accurate computation model with extreme value theory was provided. The model was used to evaluate the bus operation between adjacent sites and key stations. Then using the AVL data of Shanghai’s No.49 bus the model’s practicality was tested. Through the logistic analysis, the results show that station spacing, cross-section of urban road, intersections, bus lane and saturation have different contribution on the value of Adjacent Sites Punctuality Rate, and the bus lane plays the largest role.