Large electropneumatic interlocking with all relay controls installed at Roanoke, Va; interlocking machine is of sloping panel type with miniature levers similar to those used on CTC machines; layout of tracks and signals shown.
Modern interlocking on Norfolk and Western
Ry Signaling Communications
Railway Signaling and Communication ; 44 , n 3 ; p 163-166
1951
4 pages
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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