Section 147(1) in The Dedicated Freight Corridor Railway General Rules, 2018
(1)The Station Masters shall ensure that each vehicle standing at their stations are so placed and secured that they do not and cannot obstruct other lines in the manner specified below,-(a)vehicles shall be coupled together and hand brakes applied; or(b)if brakes cannot be tightened, the vehicles shall be secured with safety chains fastened to the rail and padlocked and the sprags or wooden wedges or skids shall also be used to prevent rolling down of vehicles.