North Dakota CDL — Air Brakes Practice Test

The North Dakota CDL — Air Brakes knowledge test has ~25 questions; you need ~20 correct (80%) to pass.

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25 questions · pass with 20 correct. You get instant feedback and an explanation after every answer.

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The full-length test, with feedback and an explanation after every answer.

North Dakota CDL — Air Brakes practice tests

10 full-length practice tests, each with 25 questions and a pass mark of 20, like the real test. You see the answers and explanations after you grade.

Test 1
25 questions · pass with 20
For the air brake check on North Dakota's vehicle inspection test, when does the manual say you will use wheel chocks?
Test 2
25 questions · pass with 20
Someone pulls out suddenly in front of you, and there is enough distance to stop. How does the manual say you should brake?
Test 3
25 questions · pass with 20
North Dakota's manual prints the air brake check for both its older vehicle inspection test and the modernized skills test the state began phasing in. How do the two versions break the check down?
Test 4
25 questions · pass with 20
Your tractor has a dual air brake system and is hooked to a trailer. Which of the two systems does the manual say supplies air to the trailer?
Test 5
25 questions · pass with 20
Your brakes are very wet and the temperature is below freezing. What does the manual say can happen if you set the parking brakes now?
Test 6
25 questions · pass with 20
You are about to test the low pressure warning signal in the Step 7 final air brake check. How does the manual have you set things up before stepping on and off the brake pedal?
Test 7
25 questions · pass with 20
North Dakota's Air Brakes section says a low air pressure warning must come on before tank pressure falls below 60 psi. What kind of signal does it require?
Test 8
25 questions · pass with 20
Your brakes are very wet and the temperature is below freezing. What does the manual say can happen if you set the parking brakes now?
Test 9
25 questions · pass with 20
Someone pulls out suddenly in front of you, and there is enough distance to stop. How does the manual say you should brake?
Test 10
25 questions · pass with 20
You are doing the third component of North Dakota's three-component air brake check in a tractor-trailer, fanning the pressure down. At about what pressure does the manual say the parking brake valve and the tractor protection valve should pop out?