PA CDL AIR BRAKES PRACTICE TEST
16.
When driving in hot weather, drivers should inspect tires:
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every 2 hours or every 100 miles.
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every 3 hours or every 75 miles.
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every hour or every 50 miles.
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every 4 hours or every 200 miles.
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17.
The service brake applies and releases:
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the parking brake when you use the parking brake control.
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the brake when you use the brake pedal during normal driving.
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the brake in an emergency situation.
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None of the above.
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18.
When you apply the brakes, the brake shoes and linings are pushed against:
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slack adjusters.
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the air compressor.
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the s-cam.
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the inside of
the brake drum.
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19.
You must take the CDL skills tests in the type of vehicle for which you wish to be licensed. If your test vehicle does not have air brakes:
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you won't receive a CDL.
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you'll need to take another knowledge test about air brakes.
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you'll have to immediately retake your test using another vehicle.
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you will be restricted to driving vehicles without air brakes.
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20.
Some vehicles have a separate air tank which can be used to:
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hold the vehicle or combination of vehicles stationary.
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release the spring brakes.
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unload cargo or passengers.
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turn on the 4-way emergency flashers.
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