What type of highway signs and markings require that you must obey the indicated instruction?

Regulatory signs are the type of highway signs that convey laws, regulations, or rules that must be followed by all drivers. These signs are critical for maintaining order on the roads and ensuring the safety of all road users. Examples of regulatory signs include stop signs, yield signs, speed limit signs, and no parking signs. They are characterized by their distinct shapes and colors, which help to quickly communicate their messages.

When drivers encounter regulatory signs, compliance is not optional; it is required by law. Ignoring these signs can lead to traffic violations and potentially dangerous situations on the road. While other types of signs—such as warning signs, which indicate potential hazards, or guide signs, which provide directional information—are important for safe driving, they do not carry the same mandatory compliance requirement as regulatory signs do.