Ontario Class E Practice Test · Question
The low-air-pressure warning device must activate before pressure drops below:
Low-air warning (buzzer/light) must activate no later than 55 psi.
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Question: The low-air-pressure warning device must activate before pressure drops below:
Answer options:
- 35 psi ✅ 55 psi
- 75 psi
- 95 psi
Correct answer: 55 psi
Explanation: Low-air warning (buzzer/light) must activate no later than 55 psi.
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Question explanations
- In a bus equipped with air brakes, the parking brake is typically:
- The 'low air pressure warning' on a bus 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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