Which type of signs are primarily used to control the movement of traffic?

Regulatory signs play a crucial role in controlling the movement of traffic by communicating specific laws and regulations that must be followed by drivers. These signs convey important information such as speed limits, stop and yield instructions, and other traffic rules. When drivers observe regulatory signs, they are expected to comply with the directives in order to ensure safety and order on the road.

In contrast, warning signs are designed to alert drivers about potential hazards or unusual conditions ahead, such as a curve or a construction zone, but they do not dictate specific traffic laws. Guide signs offer navigational assistance, such as direction and distance to locations, while informational signs provide additional details, such as parking regulations and the presence of nearby facilities. However, it is the regulatory signs that establish the rules that must be adhered to for safe driving practices.