Class 2 Commercial Driver Practice · Question
In a bus equipped with air brakes, the parking brake is typically:
Air-brake parking systems use springs to apply the brake and air pressure to release it.
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Question: In a bus equipped with air brakes, the parking brake is typically:
Answer options:
- A separate hand lever using cables ✅ Spring-applied, air-released
- Hydraulic
- A foot pedal
Correct answer: Spring-applied, air-released
Explanation: Air-brake parking systems use springs to apply the brake and air pressure to release it.
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Question explanations
- The 'low air pressure warning' on a bus must activate before pressure drops below:
- The low-air-pressure warning device must activate before pressure drops below:
- Smith System's first key 'Aim High in Steering' means:
- Spring (parking) brakes on an air-brake bus apply automatically when pressure falls to approximately:
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