Panel type electric interlocking machine installed at Long-view, Texas; plant includes use of red over lunar white aspect to authorize switching moves over hand throw switches and certain power switches.
Texas and pacific new all-relay interlocking
Ry Signaling Communications
Railway Signaling and Communications ; 42 , n 5
1949
4 pages
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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