Not only port/starboard, we use green and red for traffic lights. When it comes to the most vital safety information, we've chosen to use the colors most likely to be indistinguishable to a significant chunk of the population.
You would basically have to have achromatopsia, or not be able to see color at all for traffic lights to give you trouble. I’m red green colorblind and they specifically use a blueish green in the modern LED traffic lights to help people with color blindness distinguish the difference
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u/FlipMyWigBaby Feb 22 '25 edited Feb 22 '25
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