I have a red-green color deficiency as well.
Got it from my ma', rare for women, and sucks for any male-children of a afflicted woman because they are guaranteed. Thanks, damn DNA.
*Most* traffic signals I can see fine. All my life I was confused why they call the Green light, "Green"... almost all of them look a strange shade of White to me.
So far, it's only been semi-dangerous once in my life, when I saw a traffic signal I had never been through before, and it was at dark outside. I saw a vibrant green light, so I was one, quite intrigued it appeared so green to me. Thought it was neat. Kept driving toward it.
And then it turned red.
I was like.. WTF?! Where's the yellow.
Then when it turned green, it didn't look green. I was like.. wait, what?
The yellow light looked a super vibrant green to my eyes.
Some charts and some wiring is difficult to work with. But I see some reds, greens, and browns, just fine. Every system uses different shades of those colors, so it can get a little confusing. But, in my mind, if it's kind of a pure shade of a certain color, I can see it just fine. It's the other shades where things get messy. If it doesn't need to be named, it doesn't effect me one bit.
I remember wiring CAT5 cables, ugh. I remember working with cabling from two different manufacturers. Getting the ends wired right, or working with patch panels, was either easy or hell. One manufacturer used shades of green and brown that looked the exact same to my eyes. Another had shades that were very distinct and I could easily call Brown and Green. Thankfully, the yellow shades for both didn't cause problems at all.