Instrument capable of measuring speed of vehicles passing along road at speeds between 15 and 70 mph under conditions where flow of traffic is high; it is operated by detector tubes on road and uses ma-sec meter operating on known current to measure time intervals; it includes arrangement of switches and relays to measure speed of vehicles passing over tubes in either direction.


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    Title :

    Speedometer [midline ellipsis] for use at high traffic flows


    Additional title:

    Electronic Eng


    Contributors:
    Laker, I.B. (author) / Whiting, P.D. (author)

    Published in:

    Publication date :

    1955


    Size :

    3 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English