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EXAM REVIEW
NCCCO Examination
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2026 Free Arkansas DMV Class A CDL Air Brakes Test 2
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Question Number 21
21. Before driving a vehicle with a dual air brake system, you must wait for the air compressor to build a minimum of ____ in both the primary and secondary systems.
25 psi
50 psi
75 psi
100 psi
✔ Correct Answer:
100 psi
Count Down:
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