AIR BRAKES CDL PRACTICE TEST - WEST VIRGINIA
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The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the West Virginia CDL knowledge test. The WV CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the West Virginia CDL Manual. Take this WV CDL practice test now to prepare for the actual air brakes test!
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1.
Foundation brakes are used:
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only with the right wheels.
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at each wheel.
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only with the rear wheels.
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only with the front wheels.
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2.
Air storage tanks:
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pump air into the air storage tanks.
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are installed in the first tank the air compressor pumps air to.
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hold compressed air for the brakes.
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use parts of the service brake systems to stop the vehicle in a brake system failure.
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3.
Which of the following is TRUE about dual air brake systems?
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Each brake system has its own air tanks, hoses and lines.
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A dual air brake system has 2 separate air brake systems.
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most heavy-duty vehicles use dual air brake systems.
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All of the above.
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4.
When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
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right; right
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right; left
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left; left
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left; right
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5.
The air brake lag distance at 55 mph on dry pavement adds about:
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16 feet.
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75 feet.
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60 feet.
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32 feet.
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6.
The application pressure gauge shows:
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how much air pressure you are applying to the brakes.
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how much pressure the relay valves should send to the trailer brakes.
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how much pressure is in the air tanks.
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All of the above.
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7.
How many reflective triangles/emergency reflectors should you carry?
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2
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4
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1
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3
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8.
The most common foundation brakes found on vehicles with air brakes are the:
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S-cam brakes.
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parking brakes.
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disc brakes.
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wedge brakes.
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9.
If your ABS fails:
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you will have no brake function, and could lose control.
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you will still have normal brake functions.
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your tires might grab unexpectedly and you could lose control.
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the first step is to get the vehicle off the road and stop.
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10.
When the air pressure is built up to governor cutoff, the air leakage rate for combination vehicles with the engine off and the foot brake fully applied should be less than_____ in one minute.
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2 psi
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3 psi
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4 psi
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5 psi
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WV Air Brakes Test
| Number of questions: | 25 |
| Correct answers to pass: | 20 |
| Passing score: | 80% |
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