A method for computing a display of additional information for display on a display unit. The insertion of additional information supports the driver in the longitudinal guidance of a transportation vehicle. The insertion of the additional information takes place as an augmented reality display, so that the additional information is computed contact-analogously to one or more objects in the environment of the transportation vehicle. The position of a transportation vehicle traveling in front is detected. When the observer transportation vehicle is approaching the transportation vehicle in front, an animated graphic is displayed section by section in a periodically recurring manner starting from the observer transportation vehicle.