What type of sign typically regulates traffic speed limits?

Answer: C — Regulatory signs

Regulatory signs are designed to inform drivers of specific laws and regulations that must be followed, which includes directives regarding speed limits. These signs are typically rectangular and feature clear, concise messages or symbols that indicate what drivers are required to do or refrain from doing. For example, a speed limit sign indicates the maximum speed at which vehicles are permitted to travel in a particular area, ensuring safety for all road users and maintaining an orderly flow of traffic. While warning signs are meant to alert drivers to potential hazards or changes in road conditions, and informational signs provide useful details about locations or services, regulatory signs specifically focus on laws that govern traffic behavior. Guide signs aid in navigation but do not impose any requirements on the driver. Therefore, regulatory signs are the most relevant when discussing speed limits and essential traffic regulations.