Monitoring a freeway network in real time using single-loop detectors
by Xiaoping Zhang, Yinhai Wang, Nancy L. Nihan, Hu Dong
International Journal of Vehicle Information and Communication Systems (IJVICS), Vol. 1, No. 1/2, 2005

Abstract: With the widespread adoption of automated traffic sensors, the increase of computer processing power, and the evolution and growth of the global Internet, our ability to monitor traffic and convey traffic information in real-time has been dramatically advanced. To the authors' knowledge, most of the current traffic information systems mainly provide general traffic flow information. Vehicle classification data, such as truck volumes, that should be key inputs for good transportation planning, freight mobility analysis, roadway geometric and structural design and traffic control and operation, are often excluded or only roughly estimated. To address this problem, this paper describes the design and implementation of a traffic monitoring and information system recently developed at the University of Washington that visually conveys speed and vehicle classification information, obtained by processing real-time single-loop measurements, to the general public through the client/server computer architecture. The development of this system makes real-time monitoring of truck volume data on a freeway network possible.

Online publication date: Mon, 08-Aug-2005

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