Signaling systems for passenger and freight traffic on Seaboard Air Line; railroad has 1565 mi of single track equipped with dispatcher controlled signaling for authorizing train movements by signal indication without train orders; on 56 mi of double track, train operation is by signal indication both ways on each track; on remaining 19 mi of double track, signal protection is provided for movement with direction of traffic.
How to get maximum capacity of single track
Ry Signaling Communications
Railway Signaling and Communications ; 49 , n 11
1956
6 pages
Aufsatz (Zeitschrift)
Englisch
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