Historical review of signal developments; automatic signals; route indicators; manual vs. automatic signaling. (See also - discussion p 340-347)
Effect of signalling on track capacity
Inst. Transport -- Jl
Institute of Transport -- Journal ; 12 , n 7 ; p 326-340
1931
15 pages
8 Figs.
Aufsatz (Zeitschrift)
Englisch
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