What does the color yellow signify in traffic control?

The color yellow in traffic control is universally recognized as a signal for caution or warning. It alerts drivers to be aware of potential hazards ahead, such as construction zones, traffic signal changes, or other situations that may require reduced speed or increased vigilance. The use of yellow is critical in ensuring safety, as it prepares drivers to anticipate possible changes in traffic conditions or the need for immediate action.

In the context of traffic signals, yellow is typically used to warn that the light is about to change to red, indicating drivers should prepare to stop. This color’s significance extends beyond signals to signage that indicates caution in various circumstances, reinforcing the need for slower speeds and awareness of surrounding conditions.