11. If one air system in a dual air brake system i...

2026 District Of Columbia DMV Air Brakes Class A Test 1

11. If one air system in a dual air brake system is very low on pressure:

None of the brakes will work at all.

Either the front or rear brakes will not be operating fully.

There will be no noticeable affect.

Lights on the outside of the tractor will flash.

✔ Correct Answer:

Either the front or rear brakes will not be operating fully.

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