An Improved Method for Estimating Urban Traffic State via Probe Vehicle Tracking

被引：0
|
作者：
Zhao Qiankun [1 ]
Kong Qingjie [1 ]
Xia Yingjie [1 ]
Liu Yuncai [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Automat, Shanghai 200240, Peoples R China
来源：
2011 30TH CHINESE CONTROL CONFERENCE (CCC) | 2011年
关键词：
GPS probe vehicle; Traffic state estimation; Vehicle tracking; Intelligent Transportation Systems; TRAVEL-TIME; SYSTEMS;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In order to estimate the state of urban traffic flow, a Probe-Vehicle-Tracking based method is proposed in this paper. The method collects traffic flow data with Global Positioning System (GPS)-equipped taxies, which are taken as the probe vehicles. Then, the A* heuristic search algorithm is employed to judge the optimal vehicle tracking path. In addition, the average velocities of road links are calculated by considering the velocities of vehicle tracks as well as their corresponding credibility factors. Finally, an experiment with massive real-world traffic data in the surface road network of Shanghai was carried out, and the ground truth of the average velocity was obtained by repeating the videos shot on the 24 links in Shanghai downtown. The experiment results verify that the method has high accuracy and can be applied in engineering practice.
引用
收藏
页码：5586 / 5590
页数：5
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