Why are JCB and CAT machines both yellow?
CAT was the first company to have yellow machines. JCB machines were initially blue and red, before they too became yellow. This was mainly because the colour yellow had become associated with safety on a building site. The reason for this is that you are much more likely to notice a yellow machine or object in your periphery vision ( by that I mean what you see out of the corner of your eye,) than any other colour. Nowadays most construction machines are yellow for safety reasons.
