A vehicle has an on-board control device installed therein, and the on-board control device is provided with a movement information learning unit that learns by associating movement information for the vehicle and the like with information specifying corresponding links or nodes. The movement information learned by the movement information learning unit is recorded in a movement information database. During driving assistance performed by a driving assistance unit, an information integration unit integrates movement information corresponding to at least two consecutive links or nodes among the movement information recorded in the movement information database.