In a vehicle in which a traffic congestion autonomous driving operation and a driver required driving operation are executable, a display relating to a driving operation exchange from the traffic congestion autonomous driving operation to the driver required driving operation is performed when a switching from the traffic congestion autonomous driving operation to the driver required driving operation is requested, a situation of the vehicle is specified such that the switching from the traffic congestion autonomous driving operation to the driver required driving operation is requested, and at least one of a timing of the display and a content of the display relating to the driving operation exchange is changed according to the situation.