A braking system for a road vehicle; the braking system comprises: a first brake disc; a second brake disc; a first brake caliper, which embraces the first brake disc, supports a pair of pads made of friction material, and is provided with at least one first hydraulic piston, which can be operated so as to simultaneously press, on both sides, the pads against the first brake disc; a second brake caliper, which embraces the second brake disc, supports a pair of pads made of friction material, and is provided with at least one second hydraulic piston, which can be operated so as to simultaneously press, on both sides, the pads against the second brake disc; a hydraulic circuit containing a brake liquid, which is suited to be pressurized so as to operate the hydraulic pistons, and comprising a hydraulic control unit, which is provided with an electrically controlled pump designed to pressurize the brake liquid; a first delivery pipe, which connects the hydraulic control unit to the first hydraulic piston of the first brake caliper; a second delivery pipe, which connects the hydraulic control unit to the second hydraulic piston of the second brake caliper; a return pipe, which is separate from and independent of the first delivery pipe and connects the first hydraulic piston of the first brake caliper to the hydraulic control unit; a recirculation solenoid valve, which is interposed along the return pipe and can be controlled so as to enable or forbid the circulation of the brake liquid along the return pipe; and a control unit, which controls the recirculation solenoid valve so as to normally forbid the circulation of the brake fluid along the return pipe and, when the braking system is not used, controls the recirculation solenoid valve so as to enable the circulation of the brake liquid along the return pipe and operates the electrically controlled pump so as to create a circulation of the brake liquid through the first delivery pipe and through the return pipe; the braking system is characterized in that: the second brake caliper is not provided with a return pipe; and the recirculation solenoid valve is a three-way valve, intercepts the return pipe and the second delivery pipe, and is designed to take on a first braking configuration, in which it seals the return pipe and connects the second delivery pipe to the hydraulic control unit, and a second recirculation configuration, in which it seals the second delivery pipe and connects the return pipe to the hydraulic control unit. a first brake disc; a second brake disc; a first brake caliper, which embraces the first brake disc, supports a pair of pads made of friction material, and is provided with at least one first hydraulic piston, which can be operated so as to simultaneously press, on both sides, the pads against the first brake disc; a second brake caliper, which embraces the second brake disc, supports a pair of pads made of friction material, and is provided with at least one second hydraulic piston, which can be operated so as to simultaneously press, on both sides, the pads against the second brake disc; a hydraulic circuit containing a brake liquid, which is suited to be pressurized so as to operate the hydraulic pistons, and comprising a hydraulic control unit, which is provided with an electrically controlled pump designed to pressurize the brake liquid; a first delivery pipe, which connects the hydraulic control unit to the first hydraulic piston of the first brake caliper; a second delivery pipe, which connects the hydraulic control unit to the second hydraulic piston of the second brake caliper; a return pipe, which is separate from and independent of the first delivery pipe and connects the first hydraulic piston of the first brake caliper to the hydraulic control unit; a recirculation solenoid valve, which is interposed along the return pipe and can be controlled so as to enable or forbid the circulation of the brake liquid along the return pipe; and a control unit, which controls the recirculation solenoid valve so as to normally forbid the circulation of the brake fluid along the return pipe and, when the braking system is not used, controls the recirculation solenoid valve so as to enable the circulation of the brake liquid along the return pipe and operates the electrically controlled pump so as to create a circulation of the brake liquid through the first delivery pipe and through the return pipe; the braking system is characterized in that: the second brake caliper is not provided with a return pipe; and the recirculation solenoid valve is a three-way valve, intercepts the return pipe and the second delivery pipe, and is designed to take on a first braking configuration, in which it seals the return pipe and connects the second delivery pipe to the hydraulic control unit, and a second recirculation configuration, in which it seals the second delivery pipe and connects the return pipe to the hydraulic control unit. the second brake caliper is not provided with a return pipe; and the recirculation solenoid valve is a three-way valve, intercepts the return pipe and the second delivery pipe, and is designed to take on a first braking configuration, in which it seals the return pipe and connects the second delivery pipe to the hydraulic control unit, and a second recirculation configuration, in which it seals the second delivery pipe and connects the return pipe to the hydraulic control unit.