Installation used by trains of Maine Central and Boston and Maine extends 1 1/4 mi, and includes passenger station layout, junctions and river bridge; control machine indicates track lineup before lever is thrown to clear signals.


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    Title :

    At Portland terminal combined interlocking


    Additional title:

    Ry Signaling Communications



    Publication date :

    1955


    Size :

    4 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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