2007-03-01 11:37:58 · 5 answers · asked by mani 1 in Science & Mathematics ➔ Other - Science
I can't think of a reason related to color blindness.
The most common form of color anomalous vision (commonly called "red-green colorblindness") already has a problem between red and green lights, and these people (mostly men) learn to compensate by knowing the position of the lights (red on top, yellow in middle, green on the bottom). So changing the colors can't make things worse.
The only reason I can think of is that humans have a *very* hard time changing an intrinsic habit ... but ironically enough, color-blind people would probably have the least amount of trouble adjusting as they don't use the colors of the lights anyway.
2007-03-01 14:59:35 · answer #1 · answered by secretsauce 7 · 0⤊ 0⤋
People in San Francisco would like that. They have a hard enough time seeing the regular colored lights, though.
2007-03-01 12:14:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
We could, but it would cause confusion and yield no benefit. Further, each change you propose would make the signal light harder to recognize in nearly any environment.
2007-03-02 18:46:42 · answer #3 · answered by Frank N 7 · 0⤊ 0⤋
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2016-11-26 23:05:23 · answer #4 · answered by remeika 4 · 0⤊ 0⤋
why?
2007-03-01 13:16:33 · answer #5 · answered by Rando 4 · 0⤊ 0⤋