Yellow is similar to the emotion of the feeling excitement, like being loud and and in your face, but not due to anger. Also very protective and warning like, too.
In feeling, it would be comforting, and warm. But also almost like a warning to watch out and be careful. Slow down and not go to fast.
Reasons I give for my answer, is the fact yellow is very eye catching and very in your face once there, depending on shade. It is one of the colors that can be used to help let people know you are there when working on a job site, which is helpful to protect them and yourself from them. It is also the color used to tell us when to slow down when driving. Or warning of signs of what is ahead.
It is also the color of sunlight, which equals warmth and comfort in a sense. Health even in some peoples view, since sunlight can be a remedy to help some depressions.
