(1) When line clear has been granted to a train and when—
(a) signals have not been taken 'OFF' no obstruction shall be permitted outside of the outer most facing point, at the end of the station nearest to the expected train but shunting within station section may go on continuously provided the necessary signals are kept at 'ON' , advanced starter or shunting limit board has been provided and shunting is permitted under special instruction which takes into consideration the speed, weight, and brake power of the trains, the gradients, the position of the first Stop signal and the distance from which that signal can be seen by the Loco pilot of an approaching train.
190 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(i)]
(b) when approach signals have been taken 'OFF' for an incoming trains, obstruction or shunting shall be permitted on the line which is isolated and no shunting shall be carried out over or near the points which may cause infringement to the incoming train during the course of shunting, it shall, however, be permitted up to the short of points, on which train movement is to take place provided the shunting movement over the point is protected by a Stop signal or by a Shunt signal, such shunting shall be performed under the supervision of the authorised competent Railway servant.
(2) When line clear has not been granted to a train.- Shunting within station section may go on continuously provided the necessary signals are kept at 'ON'.