CDL AIR BRAKES PRACTICE TEST - ARKANSAS
11.
Most heavy duty vehicles use ___ air brake systems for safety.
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dual
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reduced
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triple
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single
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12.
Emergency brakes and parking brakes must be held on by:
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air pressure.
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hydraulic pressure.
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mechanical force.
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All of the above.
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13.
If the drive wheels begin to spin when accelerating, you should:
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set the parking brake.
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brake gently.
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take your foot off the accelerator.
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continue to accelerate.
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14.
Most heavy-duty vehicles use:
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dual air brake systems.
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single air brake systems.
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triple air brake systems.
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pump-the-brake systems.
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15.
When backing a trailer, you should:
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turn the steering wheel in the direction you want to go.
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never make pull-ups to reposition your vehicle.
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try to position your vehicle so you can back in a straight line.
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avoid correcting the drift.
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