If you keep applying the brakes to control your speed on a steep descent, the brakes will fade (lose their effectiveness). Instead, if your vehicle has an automatic transmission, select a low range that prevents the transmission from shifting up beyond the selected gear. This will generate a braking effect to slow the vehicle, known as engine braking. The lower the gear, the greater the engine braking effect. Apply the brakes only when engine braking is insufficient or you want to stop.