California CDL Class A Practice Exam

When navigating downhill, the recommended practice is to downshift to a gear that is lower than what you would typically use when going uphill. This is important for several reasons.

Firstly, a lower gear provides greater engine braking, which helps to control the speed of the vehicle without solely relying on the brakes. This is crucial because using brakes excessively while descending can lead to overheating and brake fade, making it difficult to slow down or stop when needed.

Secondly, by selecting a lower gear, you engage the engine more effectively, allowing it to assist in managing the vehicle's speed. This is particularly essential in larger vehicles that carry heavy loads, where maintaining control is vital for safety.

In contrast, choosing a gear that is higher than necessary or one that feels comfortable does not contribute effectively to speed management and increases the risk of losing control, especially on steep slopes.