It is yellow with black symbols. If the sign shows two children walking, a school is near. If the sign shows two children walking in a crosswalk, you are at a school crossing. This three-sided sign is shaped like a pennant. It is yellow with black wording.
Some signs have four sides.
Other shapes may be used for special purposes. For example, various shields may be used as route markers while two crossed panels may be found at railroad crossings. Colors of Signs You just read about the nine basic shapes of signs. There are also eight basic colors, each of which has a special meaning. It is important that you memorize the meanings of the colors.