What kind of hazards are indicated by the color yellow in traffic signs?

The color yellow in traffic signs is specifically used to indicate warning hazards. This color serves as a signal to drivers and pedestrians to approach with caution, alerting them to potential dangers on or near the roadway. For example, yellow signs may indicate curves, pedestrian crossings, or reduced speed areas. The use of yellow effectively grabs attention and communicates the need for increased awareness to avoid accidents or hazardous situations.

Regulatory hazards are typically indicated by colors such as red, which signifies must-follow rules, while information hazards might be represented in green or blue. Emergency hazards can be indicated in various colors, but are often associated more with immediate response situations rather than general warnings. Thus, yellow's distinct role as a warning color is critical for maintaining safety on the roads.