What color are caution signs usually?

Caution signs are typically yellow because this color is universally recognized for its visibility and ability to alert drivers to potential hazards or changes in road conditions. The bright yellow background grabs attention and serves as a warning, making it essential for driver awareness and safety. Yellow is often used for warning signs to indicate that drivers should be cautious and proactive in observing the conditions ahead, such as curves in the road, pedestrian crossings, or construction zones. This color choice is intentional to ensure that the signs stand out in various weather conditions and against different backdrops, effectively conveying important information to drivers.