A braking system for farm vehicles or the like, comprising - an anti-lock braking system or ABS fed by a first fluidic circuit containing a first fluid; - at least a first rear brake and a second rear brake fed by a second fluidic circuit containing a second fluid, said second fluid being incompatible with said first fluid; - bi-fluidic relays connected between said ABS and said at least a first rear brake and a second rear brake (13, 14) and arranged to interface said first fluidic circuit with said second fluidic circuit; characterised in that it comprises - a first and a second braking pedal (101, 102, 201, 202) respectively connected to a first and a second master cylinder (103, 104, 203, 204), each cylinder being fed by said first fluidic circuit and being arranged to activate braking by means of said at least a first and/or a second rear brake (13, 14); - a first and a second spool valve (109, 110, 209, 210) respectively connected to said first and second master cylinder (103, 104, 203, 204); - at least one logic control device (108, 208, 208a) connected to said master cylinders, to said spool valves (109, 110, 209, 210) and to said ABS and arranged to operate so that: - if a single pedal (101, 102, 201, 202) is actuated, the intervention of the ABS is excluded and a steer-by-braking function, or SBF, is activated on the basis of the connection between the master cylinder and the respective brake through the respective spool valve (109, 110, 209, 210); and - if both pedals (101, 102, 201, 202) are actuated, the intervention of the spool valves (109, 110, 209, 210) is excluded and the ABS intervention is activated on the basis of the connection between the master cylinders and the ABS. - an anti-lock braking system or ABS fed by a first fluidic circuit containing a first fluid; - at least a first rear brake and a second rear brake fed by a second fluidic circuit containing a second fluid, said second fluid being incompatible with said first fluid; - bi-fluidic relays connected between said ABS and said at least a first rear brake and a second rear brake (13, 14) and arranged to interface said first fluidic circuit with said second fluidic circuit; - a first and a second braking pedal (101, 102, 201, 202) respectively connected to a first and a second master cylinder (103, 104, 203, 204), each cylinder being fed by said first fluidic circuit and being arranged to activate braking by means of said at least a first and/or a second rear brake (13, 14); - a first and a second spool valve (109, 110, 209, 210) respectively connected to said first and second master cylinder (103, 104, 203, 204); - at least one logic control device (108, 208, 208a) connected to said master cylinders, to said spool valves (109, 110, 209, 210) and to said ABS and arranged to operate so that: - if a single pedal (101, 102, 201, 202) is actuated, the intervention of the ABS is excluded and a steer-by-braking function, or SBF, is activated on the basis of the connection between the master cylinder and the respective brake through the respective spool valve (109, 110, 209, 210); and - if both pedals (101, 102, 201, 202) are actuated, the intervention of the spool valves (109, 110, 209, 210) is excluded and the ABS intervention is activated on the basis of the connection between the master cylinders and the ABS. - if a single pedal (101, 102, 201, 202) is actuated, the intervention of the ABS is excluded and a steer-by-braking function, or SBF, is activated on the basis of the connection between the master cylinder and the respective brake through the respective spool valve (109, 110, 209, 210); and - if both pedals (101, 102, 201, 202) are actuated, the intervention of the spool valves (109, 110, 209, 210) is excluded and the ABS intervention is activated on the basis of the connection between the master cylinders and the ABS.