Section 218(5) in The Dedicated Freight Corridor Railway General Rules, 2018
(5)Additional precautions to be taken in case trains are to run following each other. - (a) no train shall be allowed to run unless provided with Amber Flasher light in the rear which should be kept at 'ON' during the entire run, and a train shall not follow another from a station unless there has elapsed, since the departure of the previous train, an interval of not less than fifteen minutes, or such shorter interval as may be fixed by special instruction;(b)the Loco pilot shall not start his train unless such interval has elapsed after the departure of the last train mentioned on authority form 15;(c)all the trains following the first train shall be timed to run at the same speed and such speed shall not exceed twenty five kilo meter per hour except under special instruction;(d)the actual time of the departure of each train shall at once be intimated to the block section station in advance and the actual time of arrival of each train shall at once be intimated to the block station in rear;(e)the number of following train running at the same time between the two block station shall not be more than one for each five kilometers of station interval; and unless permitted by special instruction, shall never exceed four, whatever may be the length of the station interval;(f)no obstruction shall be permitted out-side the outermost facing point in the face of an approaching train;(g)when a train is stopped out-side the first Stop signal or the last Stop signal of the opposite direction or between stations for any reason and the detention exceed or is likely to exceed five minutes, it shall be protected in accordance with the provision of rule 223;(h)once the direction of movement has been established it shall not be changed unless the last train has reached the station in advance, and the earlier message is first cancelled under exchange of private number as in sub-rule (11) of the rule 218 below. Thereafter, for running trains in the other direction, a fresh message shall be exchanged in the manner prescribed under sub-rule (2) of the rule 218 above.
