OCR Text |
Show Odd Traffic Directing High up in the signal control tower :t the Detroit municipal airport a inan stands as planes come in, directing direct-ing traffic with a barrel-shaped object 18 Inches long and 8 inches in diameter. diam-eter. It is fitted with pistol grips and triggers. As the planes hover in close the man can be seen pointing the "weapon" at them. It is an aerial traffic light which is visible only to the the plane at which it is pointed. When the red light shines the pilot must circle some more, but when he spots the green the field is clear for him to bring his plane down. |