Which statement best describes the function of regulatory signs?

• A. They are decorative signs
• B. They indicate legal requirements such as speed limits and parking
• C. They indicate where you must yield to pedestrians
• D. They warn of hazards

Answer: (B)

Regulatory signs tell you the rules you must follow while driving. They establish legal requirements or prohibitions, such as the speed you may drive, where parking is allowed or not, and where you must stop or yield. This makes the statement describing them as indicating legal requirements like speed limits and parking the best fit. Other types of signs serve different purposes—for example, warning signs alert you to hazards ahead, and guide signs provide directions or information—so they aren’t describing the function of regulatory signs. Ignoring regulatory signs can lead to penalties and unsafe situations, which is why they convey mandatory rules you must obey.