Automobiles crossing bridge over Mississippi River at Cairo, Ill, are counted and reported to toll house by means of totalizing installation which disregards foot passengers; two light beams and two photocells are used, horizontal beams being projected at angle rather than directly across bridge right-of-way.


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    Title :

    Counting traffic


    Additional title:

    Electronics


    Published in:

    Electronics ; 7 , n 9


    Publication date :

    1934


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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    Radio controlled traffic counting

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    Road traffic counting distributions

    Buckley, D.J. | Elsevier | 1967