Why is it important to be in the proper gear before starting down a hill?

Being in the proper gear before starting down a hill is crucial because gravity can significantly increase vehicle speed. When driving downhill, the force of gravity pulls the vehicle forward, which can lead to uncontrolled acceleration if you're not in a gear that allows you to manage your speed effectively.

Selecting a lower gear helps to engage the engine's braking capabilities, allowing you to maintain a safe speed without relying solely on the service brakes. This is important to prevent brake overheating and potential failure, which can create dangerous situations on steep descents. Being in the right gear ensures that you have better control over your vehicle’s speed and can navigate down the hill safely.

While fuel savings, engine load management, and visibility are important considerations in driving, they are secondary to the critical need for speed control when descending a hill.