An apparatus was designed to monitor automatically the speed and headway of vehicles in traffic lanes at equipped but unattended road sites. Measurements can be made day or night and in almost all weather conditions and levels of traffic flow. The equipment also provides a measure of wheelbase for classification and vehicle spacing calculation purposes. Signals from vehicle detectors at the remote sites are sent, via a data link, to a central processing unit and data, in the form of the elapsed-time periods together with the time of day, are recorded on punched paper tape for subsequent analysis by computer. (Author)


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    Title :

    Equipment for the Automatic Measurement of Headway, Speed and Wheelbase of Vehicles


    Contributors:
    P. L. Harms (author)

    Publication date :

    1968


    Size :

    26 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






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