MOBILE OBJECT CONTROL SYSTEM, MOBILE OBJECT, CONTROL METHOD, AND STORAGE MEDIUM

A mobile object control system includes: a storage device configured to store a instructions; and one or more processors, wherein the one or more processors execute the instructions stored in the storage device to: determining whether a roadway is a pedestrian road in which passage of vehicles is restricted; expanding a movable area in which the mobile object can move in a width direction of the roadway when it is determined that the roadway is the pedestrian road; and controlling the mobile object based on the movable area.