What is the function of the stop sign?

The function of the stop sign is to instruct drivers to come to a complete stop and yield to both traffic and pedestrians before proceeding. This traffic control device is essential for maintaining safety at intersections and ensuring that all road users are aware of their right of way.

When a driver encounters a stop sign, they must stop fully, which means that the vehicle must not be moving at all—this is foundational to preventing accidents. After stopping, drivers should look around for any oncoming traffic or pedestrians that may need to cross the road. Once it is safe to do so, they can proceed through the intersection. This practice reduces risks for all road users, promoting a safer driving environment.

The other choices present misunderstandings about the stop sign's purpose. For example, speeding through an intersection can lead to collisions, stopping only when another vehicle is present ignores the need to look out for pedestrians, and proceeding without stopping disregards the requirement to ensure safety at the intersection.