The symbol image 44, 44′ indicating the travel course for lane change may be moved along with displaying of the virtual image 46, 46′. For example, both of the symbol image 44, 44′ and the virtual image 46, 46′ may be continuously displayed until lane change with the automated driving actually starts. Alternatively, the symbol image 44, 44′ and the virtual image 46, 46′ may be displayed respectively for appropriate periods of time without being related to each other.