Section 242(2) in The Dedicated Freight Corridor Railway General Rules, 2018
(2)A caution indicator board, stop indicator board or speed indicator board, and a termination board of approved design and which are lit by night, shall be shown as prescribed in clause (a) and (b) in the direction from where the trains have to approach in case of double line, and in each direction in case of single line.All indicators shall be placed on the left hand side visible to the Loco Pilot.(a)when the trains have to stop dead short of obstruction and only then proceed cautiously, - a Stop Indicator shall be exhibited at a distance of thirty meters from the place of obstruction and a Caution Indicator shall be placed at a distance of twelve hundred meters from the place of the obstruction. In addition, Termination Indicator shall be provided at the place where a Loco pilot may resume the authorised speed. A railway servant shall be deputed at the Stop indicator board to obtain the signature of the Loco pilot;(b)when the train is not required to stop short of obstruction but proceed at restricted speed,- a speed Indicator shall be exhibited at a distance of thirty meters from the place of obstruction and a Caution Indicator shall be placed at a distance of eight hundred meters from the place of the obstruction. In addition, Termination Indicators shall be provided at the place where a Loco pilot may resume the authorised speed; and(c)In case of multiple stop dead or speed restrictions over a continues stretch of line, - only one caution indicator from twelve hundred meters from the first obstruction and one termination indicator after the last obstruction shall be provided. Further, multiple Stop Indicator or Speed Indicators shall be placed in a manner so as to ensure that none of the restrictions imposed on any portions of the affected track is compromised towards the unsafe side.
