Section 242(2)(c) in The Dedicated Freight Corridor Railway General Rules, 2018
(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.