Patent attributes
A device of the present disclosure controls a vehicle speed of a vehicle such that the vehicle speed matches a set vehicle speed when a preceding vehicle is not detected, and controls the vehicle speed of the vehicle such that the vehicle follows the preceding vehicle when the preceding vehicle is detected. The device controls the vehicle speed of the vehicle assuming that the preceding vehicle is not detected, when a condition that allows the vehicle to overtake the two-wheeled vehicle is satisfied and an intention of a driver to overtake a two-wheeled vehicle is detected, in a case where the two-wheeled vehicle is detected as the preceding vehicle and the vehicle speed is controlled such that the vehicle follows the two-wheeled vehicle.