At north end of freight yards near Birmingham, Ala, 19-lever manually operated mechanical interlocking was replaced, by Louisville and Nashville, with arrangement of three spring switches, power-operated switch, and power signals, controlled by centralized traffic control type machine in interlocking tower 1 1/4 mi away.
Remote control replaces mechanical interlocking on L and N
Ry Signaling
Railway Signaling ; 29 , n 4
1936
4 pages
Article (Journal)
English
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