AIR BRAKES CDL PRACTICE TEST - 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 Virginia CDL knowledge test. The VA 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 Virginia CDL Manual. Take this VA CDL practice test now to prepare for the actual air brakes test!
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1.
Tar in the road pavement rising to the road surface in very hot weather:
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does not affect the road surface or driving conditions.
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causes the road to become very slippery.
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is very sticky and will slow down your vehicle.
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2.
If the ABS is not working:
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the vehicle will have weak brakes.
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you still have normal brake functions.
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the vehicle will have no brakes.
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3.
You are going down a steep grade. Once the vehicle is in the proper low gear, you should brake just hard enough to feel a slowdown, and then release the brakes when your speed has been reduced to ____ below your safe speed.
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15 mph
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10 mph
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5 mph
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4.
If the air compressor is belt-driven, you should check the air compressor drive belt before each trip. The belt should be:
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cracked.
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loose.
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tight.
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5.
The service brake applies and releases:
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the brake when you use the brake pedal during normal driving.
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the parking brake when you use the parking brake control.
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the brake in an emergency situation.
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6.
Before driving a vehicle with a dual brake brake system, the driver should:
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pump the brake pedal 10 times to build pressure.
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wait at least 10 minutes before driving.
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allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems.
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7.
Your truck has a dual air system. If either system is very low on pressure:
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either the front or the rear brake will not be fully operational.
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the low pressure warning signal will stop working.
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the tractor protection valve will not work properly.
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8.
When meeting an oncoming vehicle at night, if the other driver does not put their low beams on, you should:
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look slightly to the right to avoid looking directly at the lights of the oncoming vehicle.
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slow down and look straight ahead in your lane.
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"get back at the other driver" by putting your own high beams on.
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9.
Empty trucks:
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are higher than loaded trucks.
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require greater stopping distances.
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All of the above.
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10.
_________ must have a low air pressure warning signal.
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All vehicles with air brakes
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Vehicles with air brakes built after 2010
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Vehicles with air brakes built after 2005
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VA Air Brakes Test
| Number of questions: | 25 |
| Correct answers to pass: | 20 |
| Passing score: | 80% |
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