CDL AIR BRAKES PRACTICE TEST - FLORIDA
6.
After supplying air to the trailer brake system, you should check the brake system for crossed air lines by:
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applying and releasing the trailer brakes and listening for the sound of trailer brakes.
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shutting the engine off so you can hear the brakes.
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checking the air brake system pressure gauge for signs of major air loss.
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All of the above.
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7.
To check that spring brakes come on automatically, the first thing to do is to:
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turn off the engine, release the parking brake and time the air pressure drop.
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release the parking brake, move the vehicle forward slowly, and apply the brakes firmly.
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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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All of the above.
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8.
An ABS system:
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gives you more control over the vehicle during braking.
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keep your wheels from locking when you brake hard.
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helps you avoid skids caused by over braking.
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All of the above.
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9.
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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unload cargo or passengers.
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turn on the 4-way emergency flashers.
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release the spring brakes.
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10.
ABS:
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improves your visibility at night.
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may cause your wheels to lock when you break hard.
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helps you avoid skids caused by over braking.
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helps you stop faster.
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