Signals indicate "proceed" by means of one semaphore arm inclined upwards and "proceed at reduced speed" by two, and sometimes by three, such arms; in addition to such multi-armed signals, certain special reduced-speed signals are dealt with.
Signalling of speed restrictions on german state railway
Ry Gaz
Railway Gazette ; 59 , n 15
1933
3 pages
Aufsatz (Zeitschrift)
Englisch
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Unreasonable speed restrictions place enormous Burden on railway operation
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