Further, the virtual images 464, 464′ in FIGS. 12D and 13D may be continuously displayed until lane change with automated driving is completed. In this case, the virtual image 464, 464′ is displayed in the vicinity of a leading end of the arrow of the symbol image 44, 44′. Accordingly, when the own vehicle actually travels to follow the symbol images 44, 44′ displayed at the time when lane change starts, the own vehicle is displayed to gradually approach the virtual images 464, 464′ on the respective screens of the front windshield 15 and the monitor device 24. Then, the virtual images 464, 464′ can be erased to be absorbed into the respective screens.