Section 228(2) in The Dedicated Freight Corridor Railway General Rules, 2018
(2)If the locomotive is capable of proceeding either with or without vehicles, and the Controller so decides as to clear the front portion leaving behind the rear portion in block section, before uncoupling, the Assistant Loco pilot shall apply hand brakes of at least one third of total vehicles on a train or at least of twelve vehicles whichever is higher to prevent the portion left behind from rolling, and note down the last vehicle number of the portion coupled with the locomotive.
