Yellow is used for caution because it's a bright and easily noticeable color, making it perfect for traffic-related situations where drivers have only seconds to spot a road hazard. The color yellow stands out, grabbing attention and signaling a potential danger. This is why construction vehicles, hard hats, caution tape, safety vests, and clothing are all yellow - to help grab the attention of both drivers and workers.
Yellow's association with caution extends beyond road safety. It's often used to mark pedestrian crossings, yield signs, and "slow" signs. This is due to its psychological effect, helping to increase awareness and reduce anxiety. Yellow serves as a visual prompt to exercise caution and be mindful of potential hazards.
