To use the stab braking method in an emergency situation, you should:

1. Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.
2. Apply the brakes about halfway, but keep the wheels rolling.
3. Fully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops.
4. Apply the emergency brake.