To perform provision of information which allows a driver to generally know events which a vehicle is about to reach, and which calls the driver's attention to the events. A computer 14 controls a display apparatus 16 so as to display symbols, which corresponding to all events existing between a position of a vehicle and an end position of a service section, among events existing in the service section as first display object symbols in a first display area. In addition, the computer 14 controls the display apparatus 16 so as to display, synchronizing timing with the vehicle reaching a position corresponding to the calculated display timing, symbols corresponding to the display timing as second display object symbols in a second display area in a display size larger than a display size of the first display object symbols.