What do regulatory signs primarily communicate to drivers?

Regulatory signs primarily communicate traffic laws to drivers. These signs are essential for maintaining order on the roads and ensuring the safety of all users. They instruct drivers on what is legally required, such as speed limits, stop and yield instructions, and parking regulations. Adhering to these signs is crucial, as they set the legal framework within which all road users must operate.

In contrast, warning signs are designed to alert drivers to potential hazards and changes in road conditions, while informational signs provide guidance about routes, distances, and points of interest, which do not necessarily dictate legal obligations. Thus, the primary function of regulatory signs is to establish and enforce traffic laws, making compliance necessary for safe driving.