Method to control a road vehicle provided with a servo-assisted transmission during a slowing-down phase

A method to control a road vehicle (1) provided with a servo-assisted transmission (7) during a slowing down phase;

• the control method comprises, when the servo-assisted transmission (7) is in an automatic operating mode, the steps of:
• detecting a current speed of the road vehicle (1);
• detecting a current gear engaged in the servo-assisted transmission (7);
• detecting a pressing of a brake pedal (23);
• calculating, assuming that the pressing of the brake pedal (23) remains constant, an opening time interval needed to allow the road vehicle (1) to reach an opening speed at which a clutch (16) of the servo-assisted transmission (7) is definitively opened;
• calculating a number of downshifts that can be carried out in the opening time interval based on a time needed to carry out a downshift;
• scheduling the downshifts to be carried out in order to get from the current gear engaged in the servo-assisted transmission (7) to an opening gear with which the clutch (16) of the servo-assisted transmission (7) is definitively opened, so as to carry out no more than the number of downshifts that can be carried out in the opening time interval;
• and
• carrying out the scheduled downshifts.