Where was the traffic light originated? Any links or straight knowledge of this subject would be appreciated. I get extra credit in my legal environment for business law course… 
“When the first electric traffic signals were installed in Cleveland, Ohio, in 1914, they used red and green indications. When the first modern automatic traffic signals were put up in Detroit in the early 1920s, they used red, yellow, and green, and that’s what we’re stuck with today.”
Pilfered from Unca Cecil’s"Who decided red means “stop” and green means “go?”
awesome! thank you so much matchka… Im getting an A-aaa, Im getting an A-aa waves hands in circular motion