Question

why yellow colours to school bus​

Answer 1

Since the lateral peripheral vision of yellow is 1.24 times greater than the red colour, it is more visible than the red itself

Answer 2

Explanation:

Yellow is a bright colour , so it easily contrasts with its surroundings. So it is likely to notice a yellow vehicle faster than a grey or light blue one.

That's why to avoid risk of accident the school buses are painted yellow.

Hope it helps you