What does a yellow traffic sign indicate?

A yellow traffic sign indicates a warning of potential hazards or changes in road conditions. Yellow is universally recognized in traffic signage as a cautionary color, alerting drivers to situations that may require them to slow down, be more vigilant, or prepare for unexpected changes in the roadway or surrounding environment.

For example, yellow signs may alert drivers to curves ahead, pedestrian crossings, or other situations where extra attention is necessary for safety. By effectively conveying a warning, these signs help reduce the likelihood of accidents and promote safer driving behaviors in areas that pose risks.