DRIVER ROUTE GUIDANCE SYSTEMS : STATE-OF-THE-ART

Abstract

This paper gives an overview of the state-of-the-art of route guidance systems. Techniques for achieving in-vehicle route guidance are discussed and a method for classifying systems is presented. The classification is used: as a basis to compare the relative costs and benefits of different systems; as a framework within which to discuss current developments in Europe, Japan, and the U.S.A.; and to illustrate the advantages of infrastructure (i.e. road based) as opposed to autonomous (i.e. vehicle based) systems. Trends towards traffic responsive route guidance systems are considered, with particular reference to European work, and progress is reported on setting up the Radio Data System (RDS) for broadcasting road-traffic condition messages in Europe, and on trials of the automatic route guidance systems LISB in West Berlin and AUTOGUIDE in London. Preliminary results from research to establish the potential levels of use and benefit that could be achieved by traffic responsive in- vehicle route guidance systems are presented. Some potential impacts of these systems on society and the environment are considered, and requirements for further research in these areas are outlined.

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