Braking system for vehicles comprising - a pilot pump equipped with a manual actuation means, a lever and/or pedal, which is fluidically connected, through a first hydraulic conduit, to a sorbing device that simulates the actuation resistance offered by a hydraulically operated braking device, wherein along said first hydraulic conduit is arranged a first shut-off valve, - a second hydraulic conduit operatively connected to at least one braking device associated with a wheel of said vehicle, said second hydraulic conduit being connected to the first hydraulic conduit through a second shut-off valve, - the system comprising a processing and control unit operatively connected to the pilot pump and motor means for actuating said at least one braking device, the processing and control unit being programmed so as to actuate the braking device via the motor means as a function of the actuation of the pilot pump through the manual actuation means, in a "by-wire" operating condition, - in said "by-wire" operating condition, the first shut-off valve being selectively opened and the second shut-off valve being closed, wherein the processing and control unit is programmed to oversee the operation of the braking system so as to correct the braking action requested by the user via the manual actuation means, by actuating the motors means so as to avoid the locking of one or more wheels or the onset of instability of the vehicle during braking, said processing and control unit being programmed to induce on the manual actuation means at least a vibration when it corrects the braking action requested by the user, characterised in that the system comprises movable mechanical means, arranged between the manual actuation means and the pilot pump, said movable mechanical means being operatively connected to the processing and control unit that is programmed so as to induce vibrations on the manual actuation means by actuating the movable mechanical means, during the correction of the braking action requested by the user, wherein the movable mechanical means are vibrating mechanical means that comprise a piezoelectric device. - a pilot pump equipped with a manual actuation means, a lever and/or pedal, which is fluidically connected, through a first hydraulic conduit, to a sorbing device that simulates the actuation resistance offered by a hydraulically operated braking device, wherein along said first hydraulic conduit is arranged a first shut-off valve, - a second hydraulic conduit operatively connected to at least one braking device associated with a wheel of said vehicle, said second hydraulic conduit being connected to the first hydraulic conduit through a second shut-off valve, - the system comprising a processing and control unit operatively connected to the pilot pump and motor means for actuating said at least one braking device, the processing and control unit being programmed so as to actuate the braking device via the motor means as a function of the actuation of the pilot pump through the manual actuation means, in a "by-wire" operating condition, - in said "by-wire" operating condition, the first shut-off valve being selectively opened and the second shut-off valve being closed, wherein the processing and control unit is programmed to oversee the operation of the braking system so as to correct the braking action requested by the user via the manual actuation means, by actuating the motors means so as to avoid the locking of one or more wheels or the onset of instability of the vehicle during braking, said processing and control unit being programmed to induce on the manual actuation means at least a vibration when it corrects the braking action requested by the user, characterised in that the system comprises movable mechanical means, arranged between the manual actuation means and the pilot pump, said movable mechanical means being operatively connected to the processing and control unit that is programmed so as to induce vibrations on the manual actuation means by actuating the movable mechanical means, during the correction of the braking action requested by the user, wherein the movable mechanical means are vibrating mechanical means that comprise a piezoelectric device.