AIR BRAKES CDL PRACTICE TEST - PENNSYLVANIA
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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 Pennsylvania CDL knowledge test. The PA 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 Pennsylvania CDL Manual. Take this PA CDL practice test now to prepare for the actual air brakes test!
1.
One way to prevent hydroplaning is to:
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use the controlled braking method.
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take curves at higher speeds.
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have less than 4/32 inch tread depth in every major groove on front tires.
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make sure you have enough tread on your tires.
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2.
Before starting down a hill, you should:
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look for an escape route.
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slow down and shift to a lower gear.
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release the accelerator and shift to Neutral at the same time.
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apply the brakes hard.
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3.
Vehicles with air brakes require more stopping distance than vehicles with hydraulic brakes. Why?
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When driving vehicles with air brakes, the average perception distance increases from 400 feet to 2200 feet.
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Stopping distance for vehicles with air brakes is made up of six different factors.
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Air brakes use different brake drums.
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It takes one half second or more for the air to flow through the lines to the brakes.
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4.
A low air pressure warning signal must come on when the air pressure in the tanks falls below:
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60 psi.
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100 psi.
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15 psi.
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10 psi.
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5.
Antilock brakes:
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let you drive faster.
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help you stop faster.
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decrease your stopping distance.
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None of the above.
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