Illustrated description of recent developments in Great Britain; introduction of signals capable of displaying four different indications has enabled two classes of traffic to run at close headway; adoption of system of "double-blocking"; use of what is termed theater sign indicator, consisting of large number of small electric lamps arranged on square display ground; etc. (See also - n 4378 Dec 8 1939 p 564-6, n 4879 Dec 15 p 582-3, n 4380 Dec 22 p 608-10)


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    Title :

    Modern railway signalling practice


    Additional title:

    Engineer


    Published in:

    Engineer ; 168 , n 4381


    Publication date :

    1939


    Size :

    3 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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