Enhancing the barometric pressure drum type brake (non-balance-like) to apply the brake the secure improvement measure
Being dead against the question about auxiliary well take up in Peigou coal mine, through installing apply the brake equip and technology reform about electricity-control system, apply the brake system, secondly apply the brake system, provide safety safeguard for the mine.
But what if the car could apply the brakes before the driver even moved?
