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170 Woodcraft Manual for Girls when you can read the "Signs of the Iron Trail," and the '"nUk of the Iron Horse." The Code (From C. P. R. "Trainman's Book," 1909, No. 7563; but in feneral um.) Colors: Red = stop. Green = Go ahead. Yellow = Go cautiously. Green and White = Hag station. Stop at night. Blue — Workmen busy under car. Hand, Flag and Lamp Signals: Swung across track Stop. Raised and lowered vertically ... Go ahead. Swung at half-arms' length, in small circle across track, train standing . Backup. Swung vertically in a big circle at arms' lergth across the track, when train is running Train broken in two. Swung horizontally above head, when train is standing Put on air-brakes. Held at arms' length above the head, when train is standing Release air-brakes. Other Hand Signals, modifications of the above: Hr".nd (or hands) held out horizontally and waved up and down .... Go ahead. Hand (or hands) suddenly drawn flat and horizontal Stop. Sometimes hands raised and held palms forward All right. Arm thrust forward and swept back opposite shoulders, as in beckoning . Come back. Signals by Engine Whistle: (o a short toot. — a long one) o s= Stop; put on brakes. = Take off brakes; get ready to start.