Missouri Pacific eliminates train orders by directing train movements with signals. (See also Ry. Signaling, vol. 17, no. 11, Nov. 1924, pp. 423-428, 12 figs)
Controlled manual block with train control
Ry. Age
Railway Age ; 77 , n 19
1924
5 pages
9 Figs.
Article (Journal)
English
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