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首页> 外文会议>ITS America annual meeting and exposition >ACCURACY OF A FLOATING CAR TRAFFIC INFORMATION SYSTEM
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ACCURACY OF A FLOATING CAR TRAFFIC INFORMATION SYSTEM

机译：浮动汽车交通信息系统的准确性

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This paper examines the accuracy of traffic information generated by a commercial traffic monitoring system using anonymous tracking of cellular phones to generate roadway speed information. The calculated speeds from the cell phone floating car probe system were compared to two alternate sources of speed measurements; inductive loops for speeds on freeways, and GPS equipped test vehicles for speeds on surface streets. The Traffic Measurement System (TMS) was tested in Toronto and generated speed data which was closely correlated with speeds measured by inductive loop detectors and with speeds calculated from travel times of GPS equipped test vehicles. For both freeways and surface streets under congested and uncongested conditions, the system produce speeds with better than 85% average absolute accuracy and better then 95% average accuracy in all categories.
机译：本文研究了商业交通监控系统使用匿名跟踪手机生成道路速度信息所产生的交通信息的准确性。将手机漂浮式汽车探测系统计算出的速度与速度测量的两个备用来源进行了比较。感应环路实现高速公路上的速度，而配备GPS的测试车则提高了路面上的速度。交通测量系统（TMS）在多伦多进行了测试，并生成了速度数据，该数据与感应式环路探测器测量的速度以及从配备GPS的测试车辆的行驶时间计算出的速度密切相关。对于拥挤和不拥挤情况下的高速公路和地面街道，该系统产生的速度在所有类别中的平均绝对准确度均高于85％，平均准确度则高于95％。

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