When driving down a mountain, what gear should you use?

When driving down a mountain, what gear should you use?

• A. Lower gears to drive safely
• B. Higher gears to save fuel
• C. Neutral gear
• D. Park in low gear and coast

Answer: (A)

When descending a mountain, your goal is to control speed without overheating the brakes. Using lower gears provides engine braking, which slows the truck through the engine rather than relying solely on the service brakes. This helps you maintain a steady, safe speed on long, steep descents and reduces the risk of brake fade. In a manual transmission you’d downshift before or during the descent as needed; in an automatic with a manual mode you’d select a low gear. Apply brakes lightly as needed, but let the engine do most of the slowing. Higher gears offer less engine braking and can let you gain speed; neutral removes engine braking entirely and makes you depend on brakes alone; and shifting into park while moving is unsafe and not a valid driving technique.

When descending a mountain, your goal is to control speed without overheating the brakes. Using lower gears provides engine braking, which slows the truck through the engine rather than relying solely on the service brakes. This helps you maintain a steady, safe speed on long, steep descents and reduces the risk of brake fade. In a manual transmission you’d downshift before or during the descent as needed; in an automatic with a manual mode you’d select a low gear. Apply brakes lightly as needed, but let the engine do most of the slowing. Higher gears offer less engine braking and can let you gain speed; neutral removes engine braking entirely and makes you depend on brakes alone; and shifting into park while moving is unsafe and not a valid driving technique.