It is very annoying to take the bus with children of several years old. They are unsteady and sometimes easily fall down when encountering sudden braking. This bus safety seat is a 2014 Red Dot Award-winning design, specially designed for children. It adds a guardrail that can swing up and down to a regular bus seat. When a child sits on the chair, the guardrail can be rocked up to provide safety protection. When used by adults, the guardrail can be pulled down, just like an ordinary seat.