Red is used exclusively for regulatory road signs prohibiting doing something. So, a stop sign is red because you are prohibited from driving past it without stopping. “Yield,” “do not enter,” no left ...

When you first learned to drive, you were likely given a guide to the various road signs and their meanings. Whether it was in a formal Driver’s Education class or through a state-issued driver’s ...

Distance signs on the highway tell you important information, including how far you are from your destination, where the next exit is, or when to expect a rest stop. These signals aren't always ...