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  • In this module, you learned that regulatory signs typically are red or black and white in color. You also learned that warning signs are yellow or orange in color.
  • In order to quickly identify a sign’s message, it is important to know what other colors represent.
  • The color green is used for guide signs, such as destination and mileage signs on the interstate highway system. Guide signs tell you where you are, which way to go, and the distance to cities.

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