Section 218(11)(b) in The Dedicated Freight Corridor Railway General Rules, 2018
(b)signalled movement shall not be undertaken till advice of introduction of single line on double line is withdrawn and until the last train has arrived at the Block station in advance and the line is clear between the two stations. The Station Master intending to initiate the signalled movement shall first consult the Controller to decide the last of the train after complete arrival of which at the either end, normal working shall be resumed;