Method for controlling a differential braking arrangement

A system for controlling a differential braking arrangement of a vehicle, the system being connectable to a vehicle comprising at least one auxiliary braking arrangement and at least one differential braking arrangement, the auxiliary braking arrangement and the differential braking arrangement being connected to a pair of propelled wheels of the vehicle, wherein the differential braking arrangement is arranged to control a relative rotational speed between the pair of propelled wheels, wherein the system comprises a control unit configured to:

• receive a signal indicative of a downhill slope for a road ahead of the vehicle;
• determine an inclination of the downhill slope;
• determine a braking power needed for the at least one auxiliary braking arrangement for preventing the vehicle speed of the vehicle to exceed a predetermined speed limit when driving at the downhill slope;
• and
• control the at least one differential braking arrangement to be engaged for reducing the relative rotational speed between the propelled wheels when the determined braking power of the at least one auxiliary braking arrangement is higher than a predetermined threshold limit, wherein the control unit controls at least one differential braking arrangement to be engaged when the vehicle is positioned at a predetermined distance from the downhill slope.