The purpose of a traffic control system is to ensure the safe and smooth flow of traffic. The traffic control system has mainly two functions: Firstly, controlling traffic signals using traffic data acquired by vehicle detectors. Secondly, providing drivers with the traffic information. Traffic accidents, traffic jams, pollution induced by vehicle exhaust, etc. have become big problems in many counties. The solution for the problems above mentioned will be unable to be found through the present traffic control system, by which the traffic stream is merely controlled by traffic signals, traffic signbords, etc. Under such circumstances, the National Police Agency, Japan (NPA) which governs Japanese traffic management is faced with the re-investigation of their concept of the traffic control system. Therefore, the NPA has been promoting to introduce an advanced traffic management system called Universal Traffic Management System (UTMS) based on this new concept. UTMS is used for controlling the traffic flow and providing the traffic information to vehicle drivers in order to realize a safe and comfortable vehicle society which is less harmful to the environment. An optical vehicle detector is one of the most important key devices for UTMS, and it has been successfully developed. This newly developed optical vehicle detector uses near infrared light and it detects the vehicles, and is also used to communicate traffic information between the vehicle detector and the vehicle.


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    Title :

    Optical vehicle detector for traffic control


    Additional title:

    Optischer Detektor für Kraftfahrzeuge für Verkehrssignaltechnik


    Contributors:
    Yoshida, M. (author)


    Publication date :

    1993


    Size :

    3 Seiten, 4 Bilder, 1 Tabelle, 1 Quelle




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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