AIR BRAKES PRACTICE TEST - SOUTH DAKOTA
6.
Most heavy duty vehicles use ___ air brake systems for safety.
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dual
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single
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reduced
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triple
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7.
An Anti-lock Braking System (ABS):
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always shortens your stopping distance.
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lets you drive faster.
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increases your normal braking capability.
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keeps your wheels from locking up when you brake hard.
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8.
The trailer hand valve should:
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be used in driving.
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never be used to test the trailer brakes.
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never be used for parking.
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All of the above.
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9.
In vehicles with air brakes, water and compressor oil in the bottom of the air tank:
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should be drained completely.
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should be added regularly.
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should not be removed.
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None of the above.
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10.
To check the slack adjusters:
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park downhill and see if the vehicle rolls.
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Park on level ground and chock the wheels, release the parking brakes and pull hard on each slack adjuster. The slack adjuster shouldn't move more than one inch.
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check the air hoses connected to the brake chambers to make sure they aren't cut or worn.
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None of the above.
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