A hydraulic braking system for farm vehicles or the like, including: - an anti-lock braking device , which is fed by a first fluidic circuit containing a first fluid and is arranged to manage safety functions and ancillary functions based on interventions on braking members of the vehicle, the ancillary functions including at least a steer-by-braking function; - rear brakes and front brakes fed by a second fluidic circuit containing a second fluid incompatible with said first fluid; - bi-fluidic relays connected between the anti-lock braking device and the brakes and configured for hydraulically separating said first fluidic circuit from said second fluidic circuit ; the system being characterised in that : - the vehicle has a first and a second braking pedal connected to a first and a second master cylinder , respectively, each cylinder being configured for actuating braking by means of a front brake and/or a rear brake of the vehicle; - the anti-lock braking device is configured for individually controlling and monitoring the vehicle brakes in order to perform said safety functions and ancillary functions; - each one of said master cylinders has a first brake actuation circuit connected with a section of the anti-lock braking device intended for controlling a respective rear brake , and a second brake actuation circuit connected with a respective inlet of a logic head with two inlets and one outlet , where the outlet is connected with a section of the anti-lock braking device intended for controlling the front brakes ; and - the anti-lock braking device is associated with a selector operable by a user of the vehicle for turning on or off the anti-lock braking device at least during steer-by-braking. - an anti-lock braking device , which is fed by a first fluidic circuit containing a first fluid and is arranged to manage safety functions and ancillary functions based on interventions on braking members of the vehicle, the ancillary functions including at least a steer-by-braking function; - rear brakes and front brakes fed by a second fluidic circuit containing a second fluid incompatible with said first fluid; - bi-fluidic relays connected between the anti-lock braking device and the brakes and configured for hydraulically separating said first fluidic circuit from said second fluidic circuit ; - the vehicle has a first and a second braking pedal connected to a first and a second master cylinder , respectively, each cylinder being configured for actuating braking by means of a front brake and/or a rear brake of the vehicle; - the anti-lock braking device is configured for individually controlling and monitoring the vehicle brakes in order to perform said safety functions and ancillary functions; - each one of said master cylinders has a first brake actuation circuit connected with a section of the anti-lock braking device intended for controlling a respective rear brake , and a second brake actuation circuit connected with a respective inlet of a logic head with two inlets and one outlet , where the outlet is connected with a section of the anti-lock braking device intended for controlling the front brakes ; and - the anti-lock braking device is associated with a selector operable by a user of the vehicle for turning on or off the anti-lock braking device at least during steer-by-braking. <EOS>