West Virginia CDL — Air Brakes Practice Test
The West Virginia CDL — Air Brakes knowledge test has ~25 questions; you need ~20 correct (80%) to pass.
Or take one of 10 full-length practice tests
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.
West Virginia 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
You are driving a truck with a dual air system. The primary gauge reads 110 psi, but the secondary has sagged to 50 psi. Going by the manual, should the low air warning be on?
- Test 2
25 questions · pass with 20
On the vehicle inspection test's air brake check, you have just held the foot brake down for a full minute and read the gauge. What does Section 11 have you do next?
- Test 3
25 questions · pass with 20
At 55 mph the manual puts a number of feet on each of the four parts of an air-braked vehicle's total stopping distance. Which part is the shortest?
- Test 4
25 questions · pass with 20
It is a cold morning. Your truck has an alcohol evaporator, and its air compressor carries its own oil supply. Which pair of checks does Section 5 add before you drive?
- Test 5
25 questions · pass with 20
In which Step 7 check do you try, gently, to move the vehicle against a brake that is already set?
- Test 6
25 questions · pass with 20
Section 5 describes several forms the parking brake control can take, depending on the vehicle's age. Which of these is NOT one of them?
- Test 7
25 questions · pass with 20
One of the two systems in your dual air brake setup has dropped very low on pressure, though the truck still slows when you brake. What does the manual tell you to do?
- Test 8
25 questions · pass with 20
Which statement about a modulating control valve does NOT match the manual?
- Test 9
25 questions · pass with 20
The manual warns against setting the parking brakes in two conditions and gives a different consequence for each. Which pairing is right?
- Test 10
25 questions · pass with 20
Section 5 describes two air leakage tests, one with the brakes released and one with the foot brake held down. Which of them appears in the air brake check on West Virginia's vehicle inspection test in Section 11?