Class 1 Commercial Driver Practice · Question
When descending a long, steep grade in a heavy commercial vehicle, what is the safest approach to maintain control?
To safely descend a long, steep grade, drivers should select a gear lower than what would be used to ascend the grade. This allows the engine brake to provide p
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Question: When descending a long, steep grade in a heavy commercial vehicle, what is the safest approach to maintain control?
Answer options:
- Shift to neutral and let gravity assist, using the foot brake only when necessary. ✅ Use a lower gear than what is required to climb the same grade, and apply engine braking.
- Rely solely on the service brakes to manage speed and maintain a constant pace.
- Downshift only after the vehicle starts to gain excessive speed.
Correct answer: Use a lower gear than what is required to climb the same grade, and apply engine braking.
Explanation: To safely descend a long, steep grade, drivers should select a gear lower than what would be used to ascend the grade. This allows the engine brake to provide primary speed control, conserving the service brakes for emergencies or minor speed adjustments.
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Question explanations
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