The definition of a caution is a warning, or is the act of
expressing care because of potential risk or danger.
- Yellow is the most luminous of all the colors of the spectrum. It’s the color that captures our attention more than any other color
- Yellow is the color of traffic lights and signs indicating caution all over the world.
- Yellow is the most visible color of the spectrum.
- The human eye processes yellow first. This explains why it is used for cautionary signs and emergency rescue vehicles.
- Peripheral vision is 2.5 times higher for yellow than for red.



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