Three mechanical plants on double track Mahoning division of Erie between Cleveland and Kent, Ohio, and Meadville, Pa, were replaced by cabin door, semi-automatic, interlockers; train order signals are controlled by despatcher, and automatic "OS"ing is provided.
Interlocking on Erie
Ry Signaling
Railway Signaling ; 33 , n 3
1940
5 pages
Aufsatz (Zeitschrift)
Englisch
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