The present invention relates to a composition containing bifeprunox or its N-oxide, or at least one pharmacologically acceptable salt thereof:and L-DOPA or at least one pharmacologically acceptable salt thereof, for simultaneous, separate or sequential use in the treatment of disorders requiring recovery of dopaminergic function, including Parkinson’s disease and restless leg syndrome. A target value for a steering wheel torque corresponding to the detected steering wheel angle and the acquired yaw angular velocity is set, based on a relationship between yaw angular velocity and resistance-feel level predetermined such that the resistance feel level for a driver monotonically increases with increasing yaw angular velocity. The rotation limiting means may comprise a single or multiple protrusions, a shield extending from one or more outer grip wheels, or a cover attached to a periphery of the striking wheel. Retainer slots located in the interior of the box at the mounting end and at the opposite end provide and insertion point for wire springs.