When the pre-crash safety system (Millimetre-wave radar type) determines that there is a likelihood of a collision with a vehicle in the road ahead, it alerts the driver with a display and a buzzer, and the pre-crash brake assist operates to increase the braking force when the driver depresses the brake pedal. When it determines that it is difficult to avoid a collision, the pre-crash brakes operate to help reduce the collision speed even if the driver does not apply the brakes. At the same time, the pre-crash seatbelts rewind the front seatbelts before a collision to help reduce injury due to the collision.