Why Are School Buses Yellow?

The video explains the history and reasoning behind the yellow color of school buses. Initially, there were no regulations, and buses came in various colors. Frank Sierra, a professor, organized a conference in 1939 to standardize school bus features, including color. Yellow was chosen for its high visibility and contrast with black lettering, making it easy to see in various weather conditions. Although not federally mandated, the National Highway Traffic Safety Administration recommends this color. Today, 480,000 school buses in the US maintain this standard for safety and consistency.

Why was yellow chosen as the color for school buses?

What is the official name of the yellow color used for school buses?