Show railway signals one pull of the bell cord signifies stop two pulls mean go ahead three pulls mean back ono whistle signifies down brakes two whistles signify off brakes three whistles mean back up continued whistles indicate danger short rapid whistles a alarm A sweeping parting of the hands on a level with the eyes means go ahead A slowly sweeping meeting of the hands over the head signifies back slowly A downward movement of the I 1 hands with extended arms signifies stop A beckoning motion with one hand indicates bade A red flag waved up the track indicates danger A red flag by the roadside moans danger ahead A red flag carried on a locomotive signifies an engine following A red flag raised at a station means stop A lantern swung at right angles across the track means stop A lantern raised and lowered vertically is a signal to start A lantern swung in a circle signifies back the train |