Journal
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
Volume 58, Issue 4, Pages 1647-1653Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TVT.2008.2005775
Keywords
Global Positioning System (GPS); Intelligent Transportation System (ITS); traffic monitoring; vehicle-based mobile sensor networks
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Funding
- Natural Science Foundation of China [60573138, 60773091]
- National Grand Fundamental Research 973 Program of China [2006CB303000]
- National 863 Program [2006AA01Z247]
- United States National Science Foundation [CNR-0626380]
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Vehicle-based sensors can be used for traffic monitoring. These sensors are usually set with long sampling intervals to save communication costs and to avoid network congestion. In this paper, we are interested in understanding the traffic-monitoring performance that we can expect from such vehicle-based mobile sensor networks, despite the incomplete information provided. This is a fundamental problem to be addressed. A performance evaluation has been carried out in Shanghai, China, by utilizing the vehicle-based sensors installed in about 4000 taxies. Two types of traffic status-estimation algorithms, i.e., the link-based and the vehicle-based, are introduced and analyzed. The results show that estimations of the traffic status based on these imperfect data are reasonably accurate. Therefore, the feasibility of such an application is demonstrated.
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