Applications of automatic vehicle identification technology

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Abstract
There are several approaches to automatic vehicle identification (AVI) which have been developed since the first investigations of AVI in the 1960s. Recent significant advances in vehicle detection and data processing techniques have made the application of AVI systems both technically and economically feasible. This paper is concerned with the application of AVI technology to the transport environment and examples of three different applications are provided. Following an overview of the technology and uses of AVI, the breadth of transport applications is covered. Two specific applications in the areas of fleet monitoring and control and of automatic toll collection are described. The first is the US Heavy Electronic Licence Plate (HELP) programme: a major research and development effort aimed at investigating and developing an integrated heavy vehicle monitoring and management system. The system combines AVI with weigh‐in‐motion and automatic vehicle classification technologies and a communications and processing system linking roadside stations and central computers. The Virginia Fastoll project represents a second major application of AVI technology. An automatic toll collection system is being introduced on the Dulles Toll Road, near Washington DC, to reduce congestion and operational costs. The final section of the paper deals with a system developed on behalf of the Transport and Road Research Laboratory, to automatically monitor and enforce lorry bans. Although not requiring AVI transponders to be fitted to vehicles, the system identified violators using AVI classification techniques and photographed offending vehicles.

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