Even-numbered highways generally run east and west. Route markers for U.S. highways are in the shape of a shield. North Carolina route markers are diamond shaped. N.C. secondary road signs are rectangular in shape. Interstate highways are marked by a red, white and blue shield.
Signs indicating a nearby hospital, highway patrol station or telephone are blue and white.
Guide signs, also rectangular in shape, may be green, brown or blue. They provide directions and distances. If you are lost, a mileage and directional sign can help you. Do not endanger other drivers by stopping in the middle of the road to read a sign. Move to the shoulder of the road and wait until you have figured out where you are and which route you should take.