Section 200(4) in The Dedicated Freight Corridor Railway General Rules, 2018
(4)Track maintenance machines shall be treated as trains when moving under their own power between block stations to block station. Relevant provisions for working, failure or accident to a train, action to be taken during break-down, etc. as provided for in these rules shall also apply in case of track maintenance machine. For the purpose of through movement maximum of five machines can be permitted to run in a convoy, if they cannot be coupled for some reason. In that case,-(a)the first machine will move on a proper authority and the others on the authority of the machine following issued to each of the operators;(b)as a token of acknowledgement of moving in convoy, the machine operator will endorse on the permit that they are aware of number of machines in front and rear, as the case may be;(c)caution order will be given to all the five operators in which number of machines following shall also be mentioned;(d)machine operator will ensure that a minimum distance of one hundred twenty meters is kept between the successive machines;(e)gateman at level crossings will be specifically advised as to the number of machines in the convoy so as not to open the gate till whole of the convoy has passed;(f)when moving in convoy, the speed shall be restricted to forty kilometre per hour; and(g)the permit shall be deposited with the station master at the station in advance who shall close the line only when last of the permit has been received.
