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原文传递 Improving the Effectiveness of Traffic Monitoring Based on Wireless Location Technology.

题名：	Improving the Effectiveness of Traffic Monitoring Based on Wireless Location Technology.
作者：	Fontaine-M.D.; Smith-B.L.
关键词：	Traffic-flow; Traffic-monitoring.;Virginia-; Transportation-networks; Wireless-devices; Motor-vehicles-speeds; Travel-speeds; Wireless-communication-services; Improvements-; Effectiveness-.
摘要：	Reliable and accurate data on traffic flow characteristics are a fundamental requirement for the effective operation of transportation facilities. Data on traffic flow can be used for multiple purposes, ranging from providing traveler information to creating performance measures for the transportation system. The current state of the practice in Virginia, as well as the rest of the nation, is to rely on a network of inductive loop detectors (ILDs) to gather information on traffic flow at fixed points on the roadway network. Although ILDs are a proven technology, they have a number of limitations. Since loops are actually installed within the pavement, roadway lane closures must be used to maintain the ILDs. The cost to maintain ILDs and their associated communications infrastructure is also significant. As a result, a dense network of point detectors are usually available only on heavily traveled urban freeways. The Virginia Department of Transportation (VDOT) will likely need to expand the size of the network that it monitors to support better the increased emphasis VDOT is placing on system operations.
报告类型：	科技报告