Interlocking with centralized-traffic-control type of control machine, and circuits and locking arranged on all-relay principle installed by Western Pacific at Keddie, Calif; signals are of searchlight type; switches located 1/2 mi from control office.
All-relay interlocking on western pacific
Ry Signaling
Railway Signaling ; 27 , n 2
1934
Article (Journal)
English
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