VEHICLE CONTROL METHOD, VEHICLE CONTROL SYSTEM, AND INFORMATION PROCESSING DEVICE

A vehicle control method for controlling vehicles adapted to automated valet parking in a parking lot includes acquiring map information of the parking lot and vehicle information indicating positions of the vehicles in the parking lot, determining whether a retreating vehicle is present based on the map information and the vehicle information, determining a retreating route through a retreating route determination process, and moving the retreating vehicle along the retreating route. The retreating route determination process includes acquiring traveling route information indicating an exiting route, searching for a non-interfering route (RN1, RN2) that does not interfere with the exiting route based on the map information, the vehicle information, and the traveling route information, and determining (S420, S430) the non-interfering route as the retreating route.