An improved safety system used to determine the present position of a car riding on railroad tracks that provides data to control signals, such as flashing lights, and crossing gates at railroad grade crossings in order to prevent accidents with vehicles or persons.


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    Title :

    CONTROL SYSTEM FOR SIGNALS AT RAILROAD GRADE CROSSINGS


    Contributors:

    Publication date :

    2019-11-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



    Control system for signals at railroad grade crossings

    MCMAHON PATRICK WILLIAM | European Patent Office | 2021

    Free access

    Railroad grade crossings

    Webber, William O. | Engineering Index Backfile | 1895


    Railroad grade crossings

    Engineering Index Backfile | 1895


    Railroad grade crossings

    Rollins, Jr., James W. | Engineering Index Backfile | 1895


    Railroad crossings at grade

    Locke, A.W. / Webber, William O. / Kimball, George A. | Engineering Index Backfile | 1889