A pedestrian crosswalk through which a subject vehicle is expected to pass is specified as a first pedestrian crosswalk and another pedestrian crosswalk located within a predetermined distance from the first pedestrian crosswalk is specified as a second pedestrian crosswalk. An extension process of extending an area of at least one of the first pedestrian crosswalk and the second pedestrian crosswalk is performed. When a determination is made that at least a part of the first pedestrian crosswalk and the second pedestrian crosswalk overlap each other, an area including the first pedestrian crosswalk and the second pedestrian crosswalk is set as a detection area of a detector detecting an object around the subject vehicle. A moving object is detected in the detection area using the detector. Travel of the subject vehicle is controlled on the basis of a detection result of the detector.