A quick net search, since your question comes up frequently, showed various traffic lights in differing parts of asia as quite different than those of north america.

As a side comment, I wonder if you saw this article in the New York Times where a colorblind train engineer ran a light and ended up killing someone. http://query.nytimes.com/gst/fullpage.html?sec=health&res=9C06EEDA1F3BF935A15750C0A961958260

They say, one out of ten men have a red/green colorblindness, so your question is a good one.