(1)No locomotive shall be used belowground otherwise than in accordance with the permission in writing of the Chief Inspector and subject to such conditions as he may specify therein.(2)No locomotive shall be used where the gradient of the track exceeds 1 in 15.(3)No person other than the driver shall ride on any locomotive unless authorised in writing to do so by the manager.(4)Except during shunting operations, the locomotive shall lead the tubs or set or train of tubs.
