Vehicle braking system

A vehicle braking system comprising:

• a master cylinder for generating a hydraulic pressure in response to a pedal effort of a driver;
• a slave cylinder communicated with the master cylinder, for generating a braking force for a vehicle using a hydraulic pressure by operating an electric actuator to drive a piston;
• a vehicle behavior stabilizer communicated with the slave cylinder, for generating a braking force for each wheel of the vehicle using a hydraulic pressure;
• a master cut valve that is a normally closed valve for opening and closing a fluid flow path between the master cylinder and the slave cylinder, for making a hydraulic pressure downstream of the master cut valve work in a valve closing direction;
• a pressure sensor for detecting the hydraulic pressure downstream of the master cut valve;
• and
• a piston controller for advancing the piston in the slave cylinder when the hydraulic pressure detected by the pressure sensor exceeds a predetermined value, and returning the piston at a predetermined timing.