(15)Speed control. - (a) A locomotive or train shall be not be permitted to move at a speed greater than seven kilometers per hour.(b)A train, locomotive, wagon or other rolling stock shall not be moved by mechanical or electrical power unless it is preceded at a distance of not less than 10 metres during the whole of its journey by a shunting jamadar. He shall be provided with signalling flags or lamp and whistle necessary for calling the attention of the driver.