Section 229(1) in The Dedicated Freight Corridor Railway General Rules, 2018
(1)(a)In case of an accident resulting in complete blocking of running lines, if it is considered necessary to run train or trains to the site of the accident for relief or other purposes, such trains may be despatched into the obstructed section by issuing a written authority to proceed without line clear 'Authority to Proceed Without Line Clear' to the Loco pilots of such trains on the prescribed form;(b)where more than one such train is required to be sent, Loco pilot of each of them shall depute one of the available railway servant to station himself forty five meters behind each of them to show hand danger signal to the next relief train. The Station Master on duty shall dispatch next relief train only after receipt of such confirmation;(c)further, before issuing such an `Authority' to any train , the Station Master on duty shall obtain permission to the effect from the Controller regarding marshalling of train to be despatched. The Controller in turn shall first confirm the marshalling required by the officer-in-charge at the site of accident.
