Traffic signal employed in all installations is of distinctive type; progressive control is accomplished by means of one central impulse-sending controller; cycle of operation of system; purpose of coordinated system of control; cost for entire system as it now stands is approximately $30,000 per year.


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    Title :

    The Chicago traffic signal system


    Additional title:

    Armour Engr


    Contributors:

    Published in:

    Publication date :

    1928


    Remarks:

    4 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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