What is the purpose of a speed limit sign?

The purpose of a speed limit sign is to inform drivers of the maximum allowed speed in that area. These signs are established by traffic regulations to ensure the safety of all road users. By clearly stating the maximum speed, these signs help manage traffic flow and reduce the risk of accidents caused by excessive speeds. Speed limits vary based on factors such as road conditions, surrounding environments like residential areas or school zones, and the presence of pedestrians.

While there are other signs that might suggest recommended speeds for safe driving, indicate average speeds, or alert drivers to speed traps, those functions are not the primary role of a speed limit sign. The primary objective is to set a definitive legal limit that drivers are required to follow.