Class 2 Commercial Driver Practice · Question
Scenario 5: The 'low air pressure warning' on a bus must activate before pressure drops below:
Most jurisdictions require the low-air warning to activate before pressure drops below approximately 55 psi. The correct answer is "55 psi". This capacity-fill
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Question: Scenario 5: The 'low air pressure warning' on a bus must activate before pressure drops below:
Answer options:
- 35 psi ✅ 55 psi
- 65 psi
- 85 psi
Correct answer: 55 psi
Explanation: Most jurisdictions require the low-air warning to activate before pressure drops below approximately 55 psi. The correct answer is "55 psi". This capacity-fill scenario 5 reinforces the same competency for the class2 bank and follows the certified explanation standard.
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