City installs 280 electric traffic signals on 136 intersections at unit cost of $625; provide very flexible traffic control; require only 586,000 kw.-hr. yearly on present schedule; system control is unusual.


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    Title :

    Chicago's electric traffic signal system


    Additional title:

    Elec. World


    Contributors:

    Published in:

    Electrical World ; 87 , n 13


    Publication date :

    1926


    Size :

    4 pages


    Remarks:

    7 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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