Which of the following potholes category falls under Regulatory signs?

The category of potholes that falls under regulatory signs includes stop signs. Regulatory signs are designed to inform road users of laws and regulations that must be obeyed. Stop signs specifically instruct drivers to come to a complete stop before proceeding, thereby regulating traffic flow and enhancing safety at intersections.

In contrast, caution signs, guidance signs, and warning signs serve different purposes. Caution signs alert drivers to potential hazards or changes in road conditions, guidance signs provide directional information and distances, and warning signs indicate specific dangers or necessary precautions without commanding a specific action. Therefore, stop signs are unique in their regulatory nature, enforcing compliance with traffic laws, which makes them the correct choice in this context.