A vehicle serving as a moving station includes two GPS antennas disposed away from one another along the longitudinal direction within the vehicle. For automatic steering in the automatic-driving control mode, for a planning route with a small radius of curvature, the direction of the vehicle is estimated to be the direction passing through the positions of the front and rear portions of the vehicle. Otherwise, the direction of the vehicle is estimated to be the direction passing through the current position of the vehicle and the previous position thereof, approximately the length of the vehicle behind the current position. Driving of the vehicle is controlled based upon the current position of the vehicle and the planning route using the estimated direction of the vehicle. Thus, the direction of the vehicle is estimated with high precision appropriately corresponding to each driving situation, thereby enabling precise and stable driving control.