NEW YORK (PIX11) -- Have you ever noticed how some street signs in New York City are green while others are brown and some are blue?
For instance, Park Avenue in Midtown Manhattan is marked by a blue sign, while uptown it might be brown. Similarly, Lexington Avenue in Midtown is blue but turns green in the 50s. This variation can be observed in many other parts of the city, each with unique significance.
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These color-coded signs all serve a purpose.