In a driving support device, an image output unit outputs an image including a host vehicle object representing a host vehicle and a nearby vehicle object representing a nearby vehicle, to a display unit. The operation signal input unit receives an operation of a user for changing a distance between the host vehicle object and the nearby vehicle object in the image displayed on the display unit. The command output unit outputs a command for instructing one vehicle to travel following another vehicle when the distance between the host vehicle object and the nearby vehicle object is equal to or less than a predetermined distance, to an automatic driving control unit that controls automatic driving.