Red makes sense to me. What else is red? Fire, etc. If something is red with fire, you know not to touch it. I can see the association there, and yellow would speak of caution because it's not quite red... But why green? Why not blue and have all primary colors? (In some places/countries I've travelled to, the "green" light is more blue)
And seriously (not just my own musing suppositions), why did signs and then streetlights come to have the colors they have now?
2006-06-27
19:08:32
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9 answers
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asked by
Laurie Jennifer
3