Which color commonly indicates caution in traffic signs?

The color yellow is commonly used in traffic signs to indicate caution. This color alerts drivers to slow down, be aware of potential hazards, and prepare to respond to changing road conditions. Yellow is often used for warning signs, such as those indicating pedestrian crossings, curves, or road work ahead. The use of yellow serves as a visual cue that there may be something requiring attention, making it a universally recognized signal for caution on the road.

In contrast, blue is typically used for informational signs, red signifies stop or prohibitive actions, and green is used for directional signs. Understanding the significance of these colors is crucial for safe and informed driving.