外文翻譯--車輛檢測技術(shù)在交通管理上的應(yīng)用-交通線路(已修改)
2025-06-01 05:49 本頁面
【正文】 畢業(yè)設(shè)計(jì) (論文 )外文資料翻譯 院 系 電氣學(xué)院 專 業(yè) 電氣工程及其自動(dòng)化 學(xué)生姓名 班級(jí)學(xué)號(hào) 外文出處 指導(dǎo)教師評(píng)語： 指導(dǎo)教師簽名 ： 年 月 日 Vehicle Detector Technologies for Traffic Management Applications Part 1 Lawrence A. Klein Consultant Ten different detector technologies were recently evaluated as part of the FHWAsponsored Detection Technology for IVHS program. The two primary goals of the program were: determine traffic parameters and their corresponding measurement accuracies for future Intelligent Transportation Systems (ITS) applications, perform laboratory and field tests with abovetheroad mounted, surface, and subsurface detectors to determine their performance. Detectors representative of all tested technologies were found to satisfy current traffic management requirements. However, improved accuracies and new types of information, such as queue length and vehicle turning or erratic movements, may be required from detectors for future traffic management applications. The choice of a detector for a specific application is, of course, dependent on many factors, including data required, accuracy, number of lanes monitored, number of detection zones per lane, detector purchase and maintenance costs, vendor support, and patibility with the current and future traffic management infrastructure. The results of this evaluation project is being presented in two parts. Part 1 introduces the theory of operation and the strengths and weaknesses of the various overhead detector technologies. Part 2 will provide field evaluation data and some general conclusions about detector performance and applications. Copies of the Final Report, a set of five pact disks containing the detector evaluation data, and other reports are available from the FHWA by writing to Mr. Pete Mills at HSR1, 6300 Georgetown Pike, McLean, VA 22101. Note: The detector performance data presented in this article were obtained by Dr. Klein when he was the project’s Principal Investigator at Hughes Aircraft Company. INTRODUCTION Maximizing the efficiency and capacity of the existing ground transportation work is made necessary by the continued increase in traffic volume and the limited construction of new highway facilities in urban, intercity, and rural areas. Smart street systems that contain traffic monitoring detectors, realtime adaptive signal control systems, and motorist munications media are being bined with freeway and highway surveillance and control systems to create smart corridors that increase the effectiveness of the transportation work. The infrastructure improvements and new technologies are, in turn, being integrated with munications and displays in smart cars and public access areas (such as shopping centers) to form intelligent transportation systems. Vehicle detectors are an integral part of these modern traffic control systems. The types of traffic flow data, as well as their reliability, consistency, accuracy, and precision, and the detector response time are some of the critical parameters to be evaluated when choosing a vehicle detector. These attributes bee even more important as the number of detectors proliferate and the realtime control aspects of ITS put a premium on the quantity and quality of traffic
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