Which color in traffic signs indicates a need for caution?

The color that indicates a need for caution in traffic signs is yellow. This color is universally recognized as a warning signal, alerting drivers to the presence of potential hazards, changes in conditions, or upcoming intersections. Yellow signs often precede various types of warning messages, such as those indicating curves, pedestrian crossings, or reduced speed zones.

This use of yellow helps ensure that drivers remain vigilant and prepare for possible changes in traffic conditions that may require adjusting their speed or taking extra care while driving. Other colors, such as green, primarily indicate guidance or direction, red signifies stop or prohibition, and orange is used for construction and maintenance warnings, but yellow is specifically tailored for cautionary messages. Understanding the meaning associated with colors in traffic signs is crucial for road safety and effective navigation.