Road Sign On A Metal Pole `STOP` With Forest Behind The Sign And Guard Rail On The Side Of The Road. Royalty-Free Stock Photography

A STOP sign is a red and white regulatory sign. It's the only road sign with an octagonal shape, which makes it easy to recognize it by both shape and color. STOP signs warn drivers that they must come to a complete stop and make sure the way is clear before proceeding. The driver should only proceed when it's safe to do so. Road safety background. The guard rail prevents vehicles from falling off cliffs or running off the road.