Which color is typically used for warning signs on the road?

The use of yellow for warning signs on the road is standard because yellow is a color associated with caution and alertness. This color stands out against various backgrounds and is easily recognizable, which is essential in situations where drivers need to be informed of potential hazards or changes in road conditions ahead. Yellow warning signs may indicate curves, pedestrian crossings, or other important alerts that require drivers to proceed with increased vigilance.

In contrast, the other colors serve different purposes: green typically indicates directional information or guidance, red is reserved for stop signs or prohibitive commands, and blue is often used for informational signs related to services or facilities. Each color has a specific function, and yellow is universally accepted for signaling warnings to ensure safety on the road.