A yellow warning sign is used to provide what kind of notice to drivers?

A yellow warning sign is specifically designed to alert drivers to potential hazards or changes in road conditions ahead. These signs are an essential part of road safety, as they help communicate important information that might require a driver's attention and caution, such as sharp curves, pedestrian crossings, or road construction. The distinctive yellow color is universally recognized as a cautionary signal, prompting drivers to slow down and prepare for unexpected situations.

In contrast, incident management signs focus on providing information related to accidents or emergencies, while movements permitted signs indicate which maneuvers are allowed at intersections or other areas. Recreational interest signs typically point out attractions or points of interest, rather than warning drivers about potential dangers. Therefore, the use of yellow for warning signs aligns perfectly with their purpose of providing general warnings to ensure the safety of all road users.