I was intrigued by the "why are traffic lights red, yellow, and green?" question at the start .. and then the article didn't actually give an answer! Decent ov

I was intrigued by the "why are traffic lights red, yellow, and green?" question at the start .. and then the article didn't actually give an answer! Decent overview of the origin here: http://www.todayifoundout.com/index.php/2012/03/the-origin-of-the-green-yellow-and-red-color-scheme-for-traffic-lights/ http://www.todayifoundout.com/index.php/2012/03/the-origin-o... Most interesting, they originally used white for "go", but ran into big problems when the red colored lens fell out by mishap!