A low for the safety of bicycles that are able to be ridden with two children is established in 2009. Consequently, development of such bicycles has been attracting a lot of attention. As a result of a previous study, it is shown that to increase safety children have to sit on the frontal seat comparing with the rear seat. But, in this case, weight and inertia of the handle is increased, and the handling is worse. In this paper, to compensate for the problem, a power steering system for such bicycles is proposed. Effectiveness of the proposed system is verified by frequency and impulse response analysis on numerical simulations.
