why the colour of school buses is yellow
School bus yellow The color was chosen because it attracts attention and is noticed quickly in peripheral vision, faster than any other color. Scientists describe this as follows: "Lateral peripheral vision for detecting yellows is 1.24 times greater than for red."[2]
Engineering traditions in Canada Purple is also the colour of the Engineering Corp in the British Military. It is common for engineers across schools in Canada to dye themselves (and their leather jackets, in the case of Queen's University engineers) purple using the medical dye Gentian Violet, especially during events such as Frosh Week.