Section 155(3) in The Dedicated Freight Corridor Railway General Rules, 2018
(3)Method of notifying imposition and cancellation of Caution Order.-(a) When a competent railway servant finds it necessary to impose special precautions as in sub-rule(1) of the rule 155, he shall, unless he is the Station Master himself, advise in writing through numbered message to the Station Master on duty of the block station controlling entry into the concerned block section, detailing therein the kilometers between which such precautions are necessary, the reason for taking such precautions, the speed at which a train shall travel and any other information required as necessary;Provided that the provision of written advice for imposing special precautions during emergency can be dispensed with if means of secured communication are provided between the Station Master and the said railway servant in accordance with special instructions, and written advice may follow.(b)When a competent railway servant finds it necessary to cancel special precautions imposed earlier he shall advise in writing through a numbered message to the Station Master on duty of the block station controlling entry into the concerned block section, referring to his earlier message.Provided that for early resumption of normal working, the written advice for cancellation of special precautions may follow and advice given on means of secured communication in accordance with special instructions.
