Extensive programs of signaling construction are required, to replace antiquated equipment, and to install new systems of signaling, such as cab signals, car retarders, centralized traffic control, highway crossing protection and consolidated interlockings; developments point to heavy programs, especially train operation by signal indication on new mileages, for 1947.
Much ahead in modern signaling
Ry Age
Railway Age ; 122 , n 1
1947
4 pages
Article (Journal)
English
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