Mar-Apr 1927 no. 2 pp. 257-292: Signals controlled by track circuit; present method of current generation and distribution; details and arrangement of signal installations. May-June 1927 no. 3 pp. 674-704: Track circuits. July-Aug 1927 no. 4 pp. 977-1016: Safety measures at switching points; electric current supply, wiring diagrams, forms of electric switches, emergency signals, etc. (See also - no. 6 Nov-Dec 1927, pp. 1680-1727)
Automatic signaling of Berlin municipal railways
Die selbsttatige Signalanlage der Berliner Hoch- und Untergrundbahnen
Archiv fur Eisenbahnwesen ; n 2-4
1927
81 Figs.
Article (Journal)
German
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