Which type of sign instructs drivers regarding speed limits?

Regulatory signs are critical for maintaining safe driving conditions as they provide drivers with essential instructions about what is legally permissible on the road. These signs often specify speed limits, indicating the maximum (or sometimes minimum) speed at which vehicles may travel on a particular stretch of roadway. Adhering to speed limit signs is crucial for driver safety and traffic flow since they are designed to reflect optimal driving speeds for the specific conditions of the road, be it residential, rural, or urban.

In contrast, warning signs typically alert drivers to potential hazards or changes in conditions ahead, such as curves in the road or pedestrian crossings, without specifying any rules on how to react. Informational signs provide helpful details such as points of interest, services, or travel distances but do not dictate any rules of conduct. Directional signs assist in navigation, showing routes and directions but do not set regulations regarding speed or behavior. Therefore, the role of regulatory signs is unique and vital for road safety regulation.