When a pedestrian or the like in an area that is ahead in the direction of movement of a vehicle travelling on a road and is adjacent to the road is moving in an direction to cross the road, a system ECU varies the time of execution of a safety operation for ensuring the safety of the pedestrian in accordance with a road condition in the area where the pedestrian or the like is present. Specifically, the time of execution of the safety operation is delayed in the order of a first road condition, in which the area in which the pedestrian is present is not in a roadway, a second road condition, in which the area is in a roadway and not in an opposing traffic lane, and a third road condition, in which the area is in a roadway and in an opposing traffic lane.