Combination of manual and electric interlocking installed at East Springfield, Ill; signals normally clear for Wabash trains; manually operated derails and electric switch locks on opposing switching route.


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    Title :

    Semi-automatic interlocking at crossing on Alton


    Additional title:

    Ry Signaling


    Published in:

    Publication date :

    1935


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English