Well yes, traffic lights are a problem, I’m red-green color blind myself. But the brain is smart enough to supply the right „color“ because it knows that red is on top and green is below.
Wait a second, is that offensive towards the color green? ;-)
I've always wondered how you handle those lights at night, if you can't see the enclosure; and how you handle the occasional horizontal traffic light, which my town has one of.
