A steering control system wherein a light receiving means rotating integrally with a light scanning means is mounted on a moving vehicle, and a light beam is scanned around the moving vehicle in the circumferential direction and the light beams reflected by at least three light reflecting means are sequentially detected by the light receiving means to detect the position of the moving vehicle on the basis of the reflected light beams so as to travel the vehicle along a predetermined traveling course. The reference direction of a photosensor used for the light beam scanning is maintained between predetermined adjoining two light reflecting means and the steering control is performed in dependance upon the positional information of the moving vehicle calculated on the basis of the detected azimuths of the reflected light beams if the number of reflected light beams detected during one revolution of the light beam is equal to the number of the disposed light reflecting means.
