CAR BRAKE GEAR

PURPOSE: To simplify a structure by enabling one valve device of valve devices to be electrically controlled and enabling the other valve device to be hydraulically controlled by pressure change to be generated by the valve device capable of being electrically controlled. CONSTITUTION: An anti-skid device 12 of a brake system 2 provided with brake circuits I, II formed into diagonal-type brake circuits is provided with a pressure conduit 43 and a return conduit 44 to be connected to an auxiliary pressure source 11.A first valve device 45 is connected to both conduits 43, 44. A safety bypass valve 47 is arranged parallel to this valve device 45. Moreover, a second valve device 49 for controlling connection and disconnection of the pressure conduit 43 and a pressure supplying connecting part 41 and disconnection and connection of a depressurizing connecting part 42 and the return conduit 43 is provided with a normally opened two-port two-position valve 50 and a normally closed two-port two-position valve 51.