Why the world chooses yellow to protect children on the road

School buses have become an essential part of modern schooling, transporting thousands of children every day. Yet one detail remains almost universal across countries, most school buses are painted bright yellow. The choice is not aesthetic; it is deeply scientific and rooted in road safety.

Yellow is among the most visible colours to the human eye. In the VIBGYOR spectrum, it sits just below red and has a relatively high wavelength. While red grabs maximum attention, it is already associated with warnings, stoppage and danger. Yellow is the next most attention-catching colour bright, vivid and easy to distinguish even from a distance or within a crowd.

Another important factor is peripheral visibility. Human eyes detect yello

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