Number of radial, longitudinal and auxiliary control systems are described with discussion of their operational principles.
Centralized remote control of railroad signaling systems
Die Fernsteuerung in Eisenbahnsignalanlagen
Siemens Zeitschrift ; 38 , n 7
1964
7 pages
Aufsatz (Zeitschrift)
Deutsch
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Centralized traffic control installed on Alton railroad
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