CDL AIR BRAKES PRACTICE TEST - WASHINGTON
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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 Washington CDL knowledge test. The WA 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 Washington CDL Manual. Take this WA CDL practice test now to prepare for the actual air brakes test!
1.
Passive railroad crossings:
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should never be crossed using a CMV.
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have at least one traffic control device.
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do not have traffic control devices.
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2.
You should check air pressure and temperature gauges:
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at the end of each trip.
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as often as is practical.
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at the beginning of each trip.
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3.
How do you check that spring brakes come on automatically?
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Continue to step on and off the brake pedal until the air pressure falls to the manufacturer’s specification.
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On a tractor-trailer combination vehicle, continue to step on and off the brake pedal until the tractor protection valve and the parking brake valve close.
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All of the above.
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4.
The __________ keeps air from going out if the air compressor develops a leak.
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emergency relay valve
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one-way check valve
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tractor protection valve
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5.
Empty trucks have the best braking. True or False?
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True.
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False.
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It depends on the cargo.
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