What color are warning signs typically?

Warning signs are typically yellow with black lettering or symbols because the color yellow is highly visible and easily recognizable, particularly in low-light conditions. This color combination is used to alert drivers about potential hazards or changes in road conditions ahead, such as curves, pedestrian crossings, or construction zones. The use of black for the symbols and text provides a strong contrast against the yellow background, enhancing visibility and comprehension for drivers.

For instance, if a driver approaches a curve or a slippery road, the yellow warning sign helps them anticipate these hazards, allowing for safer driving decisions. Other colors like green or red are used for different types of signage, such as directional guidance or to indicate prohibitions, which can lead to confusion if they were used for warnings. Therefore, the distinctive yellow and black design is critical for effectively communicating dangers on the road.