Vibration generators are provided on a vehicle to give vibration to the body of an occupant in response to outside information inputted from the outside of the vehicle, or vehicle information outputted from an in-vehicle system. The vibration generators are installed under the seating faces or inside the back of the occupant seats, or in the side wall surface of a fuel tank. The vibration generators are driven by information on predetermined contents among outside information obtained by two-way radio communication with another vehicle using radio communication equipment. The vibration generator provided in the occupant seats can be operated as speaker means producing deep bass sound in response to an audio signal of an in-vehicle audio unit. The resulting configuration enables information to be transmitted to the occupant of the vehicle by vibration given to his/her body, rather than being transmitted audibly or visually.