Traffic Sign Colors 9/ 17
California

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Red: Stop, yield, or do what is posted on the sign.
Green: Indicated movements permitted, direction guidance.
Blue: Motorist services guidance.
Yellow: General warning or caution.
Black: Regulation.
White: Regulation.
Orange: Construction and maintenance warning.
Orange (Retroreflective): Used on various types of signs.
Brown: Public recreation and scenic guidance.

Use your high-beam headlights whenever possible in open country or dark city streets, as long as it is not illegal. Do not blind other drivers with your high-beam headlights. Light from the high beams reflects off such precipitation and causes glare.