Ontario Class B Practice Test · Question
On a long downgrade in a heavy bus, the correct technique is:
Choose a gear low enough to control speed without continuous service brake use; engine/retarder braking helps prevent brake fade.
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Question: On a long downgrade in a heavy bus, the correct technique is:
Answer options:
- Coast in neutral to save fuel ✅ Select a lower gear before the descent and use engine/retarder braking, with service brakes to control speed
- Pump the service brakes continuously
- Use only the parking brake
Correct answer: Select a lower gear before the descent and use engine/retarder braking, with service brakes to control speed
Explanation: Choose a gear low enough to control speed without continuous service brake use; engine/retarder braking helps prevent brake fade.
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