To reduce the speed and stop a vehicle safely, even in case of a small friction coefficient between the wheels and the road surface, without losing the safety at the stopping time.

In this device, the informations are input from a sensor and switch group 82 at first, when a suspension device 10 is operated, and it is decided whether an emergency brake switch input by a user is in the ON condition or not, whether a brake pedal is depressed at the maximum amount or not, and whether the car speed is less than a specific value or not. A brake device 20 for vehicle is operated only when the above conditions are all YES, so as to generate the braking force in the vehicle. When the condition is not coincident to at least one condition of those conditions, or after the brake device 20 for vehicle has been operated, a car height regulation device 50 is operated.