Section 201(5)(e) in The Dedicated Freight Corridor Railway General Rules, 2018
(e)after the work is completed, the supervisor in charge shall issue a memo to the station master on duty to the effect that the work is over and other lines blocked or fouled are clear of obstructions and are safe for the passage of trains. Provided further that written memo may follow the advice given on secured voice communication where provided for early commencement of train operation on line under the system of working.