A drive assistance system is provided for assisting an operation of a driver of a vehicle in a manner that does not cause disturbance for the driver, based on image information derived from an external apparatus such as roadside cameras or the like. The image information is provided for the driver by a liquid crystal display unit, and the provision of the image information is accompanied by a provision of supplemental information from a headup display unit that draws driver's attention to the provision of the image information from the liquid crystal display unit in an appropriate manner.