In large new plant including 277 switch machines and 294 signals, each of 825 routes is controlled by individual lever which lines switches and clears signal; track and signal plan shown.
Route-lever interlocking installed by British Railways at York
Ry Signaling Communications
Railway Engineering and Maintenance ; 45 , n 4 ; p 253-256
1952
4 pages
Aufsatz (Zeitschrift)
Englisch
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