基于大样本浮动车数据的武汉市车辆行驶速度获取与分析  

Vehicle Travel Speed Estimation from Large Volume Floating Car Data:A Case Study of Wuhan

作　　者：李宇光[1] 熊普选 乐阳[1] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,武汉430079 [2]武汉市客运出租汽车管理处,武汉430019

出　　处：《交通信息与安全》2009年第4期26-29,46,共5页Journal of Transport Information and Safety

基　　金：国家自然科学基金项目(批准号:60872132);"973"计划项目(批准号:2006CB705500)资助

摘　　要：采用基于浮动车行进方向与道路方向约束的道路匹配算法,将浮动车数据准确地匹配到城市道路上;在此基础上分析了大样本浮动车平均瞬时速度与路段平均行驶速度的关系,提出了用大样本浮动车的平均瞬时速度快速评估道路行驶速度。最后利用武汉市约1万辆出租车的GPS数据,对武汉市道路车辆行驶速度情况进行了计算和分析。A map-matching algorithm was applied to urban roads. Moreover, the relationship between spot speed and average speed was analyzed. Based on the characteristics of the experimental data which are collected by over 10,000 taxis from Wuhan, China, it has been proven that the average spot speed from large volume floating car can represent the average travel speed. Therefore, the computational cost in obtaining road network traffic condition from the floating car data can be significantly reduced.

关 键 词：浮动车 大样本 路段行驶速度 

分 类 号：U491[交通运输工程—交通运输规划与管理]