Section 242(1) in The Dedicated Freight Corridor Railway General Rules, 2018
(1)Whenever the nature of the work of maintenance or the line is otherwise obstructed such that movement of train on a portion of track need not be suspended and train can pass over it with restrictions, the Loco pilot of the approaching train shall be warned in the following manner,- -(a)the Loco pilot shall be advised by the Station Master on duty at station in rear or by Station Master of notice station through a Caution Order the location, nature of work or obstruction, and whether he is to either stop dead and then proceed at a given restricted speed, or proceed at a given restricted speed without stopping at the site; and(b)the official incharge of the work shall ensure showing of signals to warn the Loco pilot of an approaching train as described in sub- rule (2) of the rule 242 below.
