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2026 District Of Columbia DMV Combination Class A Test 2
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Question Number 20
20. In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when:
Air pressure drops to a level between 20 and 45 psi.
You are experiencing a trailer jackknife.
Wheels have regained traction after a skid.
Air pressure is above 45 psi.
✔ Correct Answer:
Air pressure drops to a level between 20 and 45 psi.
Count Down:
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