Releasing Route Locking

Route Locking Circuit Railway Signalling 

Route Locking Circuit Railway Signalling  Locking of Route In free wired interlocking systems, locking of route is bifurcated into two distinct parts :- 1) Approach Locking – Achieved by dropping of ALSR relay at the time of signal clearance. 2)Back Locking which is popularly called ‘Route Locking’ – Achieved by dropping of USR relays in […]

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