System associated with resignaling scheme for electrification operates over 4-track, continuously track circuited section of line; system is fully automatic; illustrations. (See also Engineer v 193 n 5019 Apr 4 1952 p 477-9; Engineering v 173 n 4497 Apr 4 1952 p 429)
Liverpool street -- Shenfield train describer
Ry Gaz
Railway Gazette ; 96 , n 15
1952
Aufsatz (Zeitschrift)
Englisch
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