Tractor braking device

A tractor braking device (100) has a first hydraulic circuit (CIR1) for activating a rear left brake (117), and a second hydraulic circuit (CIR2) for activating a rear right brake (124), and is characterized in that the first hydraulic circuit (CIR1) and second hydraulic circuit (CIR2) also activate, separately or simultaneously, at least one front brake (120, 127).