Tendency is to use interlocking signal as train-order signal in order to eliminate confusion. See also Ry. Signaling, vol. 16, no. 9, Sept. 1923, pp. 360-362, 4 figs.
Use of train-order signals at interlockings
Ry. Age
Railway Age ; 75 , n 5
1923
3 pages
4 Figs.
Article (Journal)
English
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