When should you use low gears when driving downhill?

Using low gears when driving downhill is essential for maintaining control of your vehicle, especially when descending steep grades. Low gears increase the engine's resistance, which helps to slow down the vehicle without relying solely on the brakes. This technique is crucial because it prevents the brakes from overheating and becoming less effective, a condition known as brake fade. Additionally, using low gears helps to enhance traction and stability, reducing the risk of losing control on steep or slippery terrain. Overall, selecting a low gear when navigating downhill is a key practice for safe and effective driving in such conditions.