Let’s go back in time. There used to be no rules for school transportation ... They decided on yellow because black letters were the easiest to see with a yellow background, and yellow stood ...

The high contrast between the black letters and the yellow background makes it easy ... to make yellow the standard colour for school buses dates back to the 1930s. U.S. transportation officials ...

this yellow helps other drivers spot buses on the road. Plus, the black letters on them are easier to read because of the contrast. RELATED: How to get your kids back on a school-friendly sleep ...