When encountering a sudden situation, the first foot brake friction plate first urgent step down, followed by slow fill the second foot, and then according to the spacing of the situation gradually release the brake friction plate pedal, according to the speed into the appropriate gear, follow the accelerator pedal to recover over the car, that is, after the first foot brake friction plate, the vehicle point head a beginning to return to the position of the second foot, so that it can not quickly back to the position, and then gradually release the brake friction plate pedal. Pedal, that will reduce because of the speed of the large-scale change caused by the round-trip impact, so that travellers feel smooth.