Colorado CDL Practice Test 2025 – All-in-One Guide to Master Your Commercial Driver's License Exam!

Question: 1 / 400

How should a driver approach a hill while driving a loaded truck?

Accelerate before reaching the hill

Slow down and shift to a lower gear before going downhill

When approaching a hill with a loaded truck, it is important to slow down and shift to a lower gear before going downhill. This practice is crucial for maintaining greater control of the vehicle as gravity will naturally accelerate the truck downhill. By shifting to a lower gear, the engine can assist in slowing the vehicle down, utilizing engine braking, which prevents the truck from gaining excessive speed. This helps to reduce the reliance on the brakes and minimizes the risk of brake overheating or failure.

Maintaining a steady speed or excessively using the brakes, as suggested in other options, can either lead to challenges in control or brake wear and potential overheating. Accelerating before reaching the hill can also be dangerous, as it may lead to losing control when descending. Therefore, shifting to a lower gear before going downhill is the safest and most effective approach for a loaded truck on a hill.

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Maintain a steady speed throughout

Use the brake heavily until halfway down

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