A traffic control system 10 is provided having an illuminating member 42 and a rotating drum 48. The drum 48 is provided with a red reflector 50, a green reflector 52 and a yellow reflector 54 formed on different portions thereof. A control channel 14 is provided for selectively rotating the drum 48...http://www.google.es/patents/US5387908?utm_source=gb-gplus-sharePatente US5387908 - Traffic control system
