A hydraulic braking system for motor vehicle drive stability and/or antiskid control is equipped with an antilock braking system (ABS) that works on the return principle. To retard the return pump (14) and the wheel brakes (17, 18) and hydraulic medium under elevated pressure, especially during drive stability or antiskid control operations, the invention provides that an auxiliary hydraulic medium source (6) or precharging pump (19) is connected between the master cylinder (3) and a hydraulic medium reservoir (4) on the master cylinder (3). Described also are improvements in hydraulic braking systems for motor vehicles with drive-stability and/or antiskid control systems wherein the auxiliary hydraulic medium source (6) is situated between the master cylinder (3) and the hydraulic unit (2) of the antiskid control or wherein the master cylinder (76, 111) is used as an auxiliary hydraulic medium source.