FIGS. 23A and 23B and FIGS. 24A and 24B schematically illustrate a screen of prior notice 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 parallel parking on the road shoulder 71, 71′ of the road 70, 70′ as being deviated from the scheduled travel course 37. As illustrated in FIG. 23A, instead of the symbol image indicating the scheduled travel course, symbol images 77, 78, 79, 80 respectively indicating a planned parallel parking space, a travel course for parallel parking, and first and second stop line marks for parallel parking are displayed at the first display device 3 as being matched with the position of the road shoulder 71 in the actual scenery 36.