Traffic Lights and Color blindness?

Question

I do know that it is impossible for people who are color blind to see the same colors we all see. How is it possible for a person who is color blind to distinguish the colors of traffic lights to know when to go or stop? What if the lights are really bad sometimes and all of the colors seem to be lit by the sun's relfections? What if the lights are really dim? I know that I have trouble sometimes disginguishing what color is lit up on unfamiliar roads with bad traffic lights when I drive. How does a color blind person do it?

I know that they can probably guess because the top light is always red, then yellow in the middle, and green at the end.

Thanks for helping!!

Answer 1

traffic signals/signs are supposedly universal.Yield is a inverted triangle,stop is a hex,lights are the same order.It's the oddball sign I wonder how they can enforce,like"headligt use required"or Remove sunglasses"at a tunnel.Reading english isn't a requirement to be licensed.

Answer 2

All traffic lights are universal, red, yellow green...no guess work...

Answer 3

learn what color is first,second and third. i have trouble with blue and green.