The invention relates to a
brake pressure modulator (1) of an electronic
braking system of a utility vehicle, which is designed as a constructional unit with at least two
pressure control circuits (13, 14). The wheels (6a, 6b, 6c, 6d) of the vehicle, which can be braked, comprise pneumatically actuated wheel brakes (7a, 7b, 7c, 7d). The
pressure control circuits (13, 14) are respectively associated with a braking circuit of a vehicle axle, each
pressure control circuit (13, 14) comprises a
compressed air supply
system (4, 5), at least one redundancy control pressure path (21), at least one ventilation path (19, 19a) and a common
electronic control unit (2) being provided for the pressure control circuits (13, 14). Said pressure control circuits (13, 14) can be controlled independently from each other by means of the
electronic control unit (2). According to the invention, in order to be able to produce the multi-circuit
brake pressure modulator (1) in a constructionally simple manner which is also compact and economical, each pressure
control circuit (13, 14) has an independent ventilation path (19, 19a) and at least one of the pressure control circuits (13, 14) has an independent redundancy control pressure path (21) and at least one other of the pressure control circuits (13, 14) comprises a device (16a) for forced venting in the event of a failure by means of the associated ventilation path (19a).