To reduce speed while going down a steep hill, what should you do?

Using a lower gear while going down a steep hill is the recommended practice because it allows the engine to help control the vehicle's speed through engine braking. This provides additional resistance against gravity, which can help prevent the vehicle from accelerating too quickly. Lower gears engage the engine at a higher RPM, which creates more friction and slows down the vehicle without solely relying on the brakes.

Braking continuously on a steep incline can lead to brake overheating and reduced effectiveness, increasing the risk of losing control. Hence, shifting to a lower gear not only enhances safety but also protects the braking system. In contrast, driving in a zigzag pattern is not a safe or effective way to reduce speed and may increase the danger of losing control or veering off the road.