System using absolute permissive block control, installed by Chicago, Milwaukee, St. Paul and Pacific, on 14 mi of single track between Marquette, Iowa and Monoma; straight primary and a-c primary power supply used.
New automatic block signaling on Milwaukee
Ry Signaling
Railway Signaling ; 33 , n 10
1940
4 pages
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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