indy_cision t1_iy5rim2 wrote
Reply to comment by 2workigo in Eli5 why do traffic lights have red, yellow and green color? Why not use other colors so that even colourblind people can drive. by [deleted]
When it is dark and you driving towards them and cannot see anything other than the one glowing light, how do you know if it is the top or bottom light that is lit if you are red/green colourblind?
2workigo t1_iy5xuv4 wrote
Yep. I don’t know why I didn’t think of that. In my area the vast majority of traffic lights also seem to be surrounded by street lights so the entire stop light is illuminated at night. I was hypocaffeinated this morning, that’s my excuse. Thanks for replying, it makes sense!
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