CDL AIR BRAKES PRACTICE TEST - MINNESOTA
6.
When you use your mirrors while driving on the road, you should:
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check them quickly.
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only use the driver's side mirror.
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stare for a long time at the mirror.
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avoid checking them regularly.
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7.
If your vehicle does not have automatic air tank drains, how often should you drain air tanks to remove moisture and oil?
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Once a week.
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At least once a month.
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At the end of each working day.
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Every 4 hours.
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8.
If your vehicle has dual parking control valves, you can use pressure from a separate tank to:
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balance the service brakes while you are parked.
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park better.
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release the spring brakes so you can move the vehicle in an emergency.
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None of the above.
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9.
Most heavy-duty vehicles use:
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air brakes.
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solid brakes.
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hydraulic brakes.
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pressure brakes.
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10.
ABS:
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should only be used on dry roads.
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allows you to brake harder.
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replaces your normal brakes.
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is an addition to your normal brakes.
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