A master cylinder includes pressurizing chambers and atmospheric pressure chambers which are in communication with a reservoir provided upstream. The pressurizing chambers of the master cylinder are connected to a brake fluid pressure control valve device through master pressure pipes provided with master cut valves. The atmospheric pressure chambers of the master cylinder bypass the master cut valves and are connected to the brake fluid pressure control valve device through bypass pipes provided with check valves. A pump constituting a brake fluid pressurizing section of the brake hydraulic control valve device suctions the brake fluid from the reservoir preferentially through the bypass pipes provided with the check valves and pressurizes the brake fluid to supply a brake fluid pressure to brake fluid pressure adjust sections.