Electrically controlled pneumatic braking system for a vehicle , in particular a utility vehicle , comprising: a front axle brake circuit with a single-channel front axle modulator for controlling first and second front axle service brake actuators , a first front axle ABS valve being connected between the front axle modulator and the first front axle service brake actuator and a second front axle ABS valve being connected between the front axle modulator and the second front axle service brake actuator ; a rear axle brake circuit with at least one single-channel rear axle modulator for controlling first and second rear axle service brake actuators , a first rear axle ABS valve being connected between the at least one rear axle modulator and the first rear axle service brake actuator and a second rear axle ABS valve being connected between the rear axle modulator and the second rear axle service brake actuator ; a brake value transmitter having at least one electrical connection for providing an electronic brake request signal (Sb); and a central electronic control unit which is connected at least to the brake value transmitter for receiving the electronic brake request signal (Sb) and is connected to the front axle and rear axle modulators for controlling them; the central electronic control unit together with the rear axle modulator and/or the front axle modulator being designed as a structural unit , characterized by a further single-channel rear axle modulator for controlling third and fourth rear axle service brake actuators , a third rear axle ABS valve being connected between the further rear axle modulator and the third rear axle service brake actuator and a fourth rear axle ABS valve being connected between the further rear axle modulator and the fourth rear axle service brake actuator . a front axle brake circuit with a single-channel front axle modulator for controlling first and second front axle service brake actuators , a first front axle ABS valve being connected between the front axle modulator and the first front axle service brake actuator and a second front axle ABS valve being connected between the front axle modulator and the second front axle service brake actuator ; a rear axle brake circuit with at least one single-channel rear axle modulator for controlling first and second rear axle service brake actuators , a first rear axle ABS valve being connected between the at least one rear axle modulator and the first rear axle service brake actuator and a second rear axle ABS valve being connected between the rear axle modulator and the second rear axle service brake actuator ; a brake value transmitter having at least one electrical connection for providing an electronic brake request signal (Sb); and a central electronic control unit which is connected at least to the brake value transmitter for receiving the electronic brake request signal (Sb) and is connected to the front axle and rear axle modulators for controlling them; the central electronic control unit together with the rear axle modulator and/or the front axle modulator being designed as a structural unit , characterized by a further single-channel rear axle modulator for controlling third and fourth rear axle service brake actuators , a third rear axle ABS valve being connected between the further rear axle modulator and the third rear axle service brake actuator and a fourth rear axle ABS valve being connected between the further rear axle modulator and the fourth rear axle service brake actuator . <EOS>