Installation on Springfield-Thayer division of St Louis-San Francisco; automatic block signaling on 137 mi of light traffic single track replaced by simplified centralized traffic control with power switch and centralized traffic control signals at one end of each siding, and spring switches at other end with controlled dwarf signal at clearance point. (See also Ry Signaling and Communications v 44 n 5 May 1951 p 307-11)


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    Title :

    Power switches and spring switches in C.T.C. on Frisco


    Additional title:

    Ry Age


    Published in:

    Railway Age ; 130 , n 24


    Publication date :

    1951


    Size :

    3 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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