A determination unit determines whether a driving behavior of a vehicle is performed by automatic driving control or manual driving control. A generation unit generates presentation instructing information for presenting the driving behavior by the automatic driving control externally from the vehicle when the determination unit determines that the driving behavior of the vehicle is performed by the automatic driving control, and generates presentation instructing information for presenting the driving behavior by the manual driving control externally from the vehicle when the determination unit determines that the driving behavior of the vehicle is performed by the manual driving control. An output unit outputs presentation instructing information generated by the generation unit.