I'm red/green deficient, too, like about one man in eight, one woman in a thousand.
I was offered a place in art school way back when, but was flatly refused drivers licences on the railway and in the British Army.

I've not pursued a couple of job applications because of it, but never run a red light in 46 years driving because I couldn't see it.
British and NZ traffic lights seem to me to be composed of two orange lights and one luminous grey one. I stop for the orange ones.