Virginian Railway has installed electric interlocking to replace mechanical plant in Roanoke, Va, at crossing of single track main line and yard switching lead of Virginian with double track line of Norfolk and Western which extends from Roanoke to Winston-Salem, NC; description of interlocking which includes plug in type relays, 4-aspect dwarfs and other modern features.
All-relay electric interlocking replaces mechanical plant
Ry Signaling
Railway Signaling ; 40 , n 11
1947
4 pages
Aufsatz (Zeitschrift)
Englisch
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