Total of 57 switches, 64 crossovers and 197 signals, on 9 road mi, throughout 11 zones are controlled from one central machine using new form of polar code control; interlocking control machine described. (See also Ry Signaling v 37 n 1, Part 1 Jan 1944 p 28-36)
Canadian national installs new type of all-relay interlocking at Montreal
Ry Age
Railway Age ; 116 , n 4
1944
4 pages
Aufsatz (Zeitschrift)
Englisch
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