A railroad crossing signal test system includes a power source, a timer device configured to provide periodic electrical pulses, and first and second relays. The first relay can be configured to alternately provide the periodic electrical pulses to a left and right light of the railroad crossing signal. The second relay can be configured to alternately change a polarity of a common connection between the left light and the right light of the railroad crossing signal. The test system also includes a first switch configured to test a bell of the railroad crossing signal, a second switch configured to enable flashing of the left light according to the periodic electrical pulses, and a third switch configured to enable flashing of the right light according to the periodic electrical pulses. The system also includes test leads for electrically coupling the test system to test terminals of the railroad crossing signal.


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    Title :

    SYSTEM FOR TESTING RAILROAD CROSSING SIGNALS


    Contributors:

    Publication date :

    2025-01-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



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