A stop sign is a regulatory traffic sign that is shaped like an octagon, with a red background and a white border. The word "STOP" is written in bold, capitalized letters in the center of the sign in red color. Stop signs are placed at intersections and other locations where traffic needs to stop completely before proceeding.

When a driver approaches a stop sign, they must come to a complete stop behind the white stop line, which is usually marked on the pavement before the sign. Drivers should look both ways before proceeding, and only move forward when it is safe to do so. Failure to stop at a stop sign can result in a traffic ticket or even an accident. Stop signs are typically located at intersections, but they can also be found at other locations such as railway crossings or school zones. They are usually placed where there is a high risk of collision, such as busy intersections, blind corners, or areas with limited visibility.

The significance of stop signs in road safety cannot be overstated. They serve as a means to control the flow of traffic and reduce the risk of accidents, particularly at intersections. They help to ensure that all vehicles and pedestrians have a chance to cross safely. Pedestrians also benefit from stop signs, as they provide a designated time and place for them to cross the road. Without stop signs, the risk of accidents and injuries would be much higher, particularly at high-traffic intersections. Therefore, it is essential for drivers to always obey stop signs and stop completely before proceeding.