Section 66(2)(b) in The Dedicated Freight Corridor Railway General Rules, 2018
(b)when in an emergency, if a signal has to be put back to "ON" before passage of full train, no points or locks shall be moved until train has come to a stop, and station master has, except where route alteration is pre-empted by signal interlocking, confirmed it from the loco pilot through the approved means of communication;