In a rear wheel steering control system for a vehicle, a rear wheel steering control unit forces the toe angle of each rear wheel to a substantially neutral position or a slightly toe-in position when a road condition estimating unit has detected a rough road surface. Also disclosed is a method of forming moving sheet metal by such apparatus. A sliding window opens and closes the opening and includes an edge that is received in a guide rail that is adhesively bonded to the fixed glass panel. The subscriber information identifies the subscribers that subscribe to receive notifications for a particular presence object.