FIGS. 25A to 25C and FIGS. 26A to 26C schematically illustrate a screen of prior notice, in the order of time passage, displayed respectively at the first and second display devices 3, 4 in advance in a case that the own vehicle during travelling with automated driving performs backward parking at a parking space 82, 82′ facing the road 70, 70′ as being deviated from the scheduled travel course 37. As illustrated in FIG. 25A, instead of the symbol image indicating the scheduled travel course, symbol images 83, 84 respectively indicating a travel course for backward parking and a stop line mark for heading-back for backward parking are displayed at the first display device 3 as being matched with the position of the road 70 and the parking space 82 in the actual scenery 36.