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

Using the proper gear before starting down a hill is crucial because it allows the driver to take advantage of the engine braking effect. When descending a steep incline, shifting to a lower gear engages the engine braking system, which helps control the vehicle’s speed without relying excessively on the brakes. This is particularly important because using the brakes continuously can lead to brake overheating and potential failure, especially on long descents.

In lower gears, the engine helps slow the vehicle by creating resistance against the motion of the wheels. This not only enhances safety by maintaining control over the vehicle but also extends the lifespan of the braking system by reducing wear and tear. Therefore, gearing down before a descent is a key practice for safe and efficient driving in hilly terrain.

The other options do not adequately address the importance of safety and vehicle control when descending hills. Fuel consumption, while a factor in overall driving efficiency, is not the primary concern when dealing with steep descents. Similarly, increasing speed is counterproductive in this scenario, as is minimizing the use of headlights, which does not relate to managing a downhill slope effectively.