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2026 Illinois DMV Air Brakes Class A Test 1
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Question Number 1
1. When about to drive a vehicle with a dual brake system, a driver should:
Let the vehicle warm up to ensure the fuel reaches the engine.
Wait for air pressure to build in both the primary and secondary systems.
Begin driving just after the engine starts.
Pump the pedal about 20 times to build pressure, then begin driving.
✔ Correct Answer:
Wait for air pressure to build in both the primary and secondary systems.
Count Down:
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