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Class 2 Commercial Driver Practice · Question

Scenario 1: Maximum allowable air leakage with brakes applied on a single-unit bus is:

Single-vehicle leakage limit is 2 psi/min (3 psi/min for tractor-trailer). The correct answer is "2 psi/min". This capacity-fill scenario 1 reinforces the same

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Question: Scenario 1: Maximum allowable air leakage with brakes applied on a single-unit bus is:

Answer options: ✅ 2 psi/min

  • 3 psi/min
  • 5 psi/min
  • 10 psi/min

Correct answer: 2 psi/min

Explanation: Single-vehicle leakage limit is 2 psi/min (3 psi/min for tractor-trailer). The correct answer is "2 psi/min". This capacity-fill scenario 1 reinforces the same competency for the class2 bank and follows the certified explanation standard.

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