Display control device and display control method

Abstract

A display control device includes a controller that controls a display device. The controller: obtains information on a surrounding condition of a subject vehicle; identifies an obstacle from the information on the surrounding condition; obtains a traveling route of the subject vehicle; causes the display device to display the obstacle and the traveling route, the obstacle being positioned within a predetermined expanded area in which the traveling route is expanded in a width direction; performs a safety check necessary for the subject vehicle to travel along the traveling route under autonomous traveling, on a basis of the surrounding condition; and reduces a size of the expanded area including a first area in which the safety check has been completed than a size of the expanded area including a second area other than the first area when the first area and the second area are present on the traveling route. A first obstacle approaching the traveling route or possibly approaching the traveling route is displayed on the display device when the first obstacle is positioned outside the expanded area. A degree of display highlighting of a second obstacle moving away from the traveling route or possibly moving away from the traveling route is lower than a degree of display highlighting of the obstacle other than the second obstacle, or the second obstacle is not displayed on the display device, when the second obstacle is positioned within the expanded area.