System for controlling vehicular brakes, in particular of commercial or industrial vehicles

System for controlling vehicular brakes of commercial or industrial vehicles having a pneumatic brake implant comprising at least a front circuit (C2) provided with pneumatic brake actuators (15) configured to perform service braking when the circuit is pressurized and a rear emergency parking circuit (C3) configured to perform emergency parking when the circuit (C3) is vented, the system comprising interconnecting means (28, 29, 30) from the front braking system circuit C2 for causing the pressurization of the front circuit (C2) when the rear circuit (C3) is vented.