CDL AIR BRAKES PRACTICE TEST - DELAWARE
21.
Before driving a vehicle with a dual brake brake system, the driver should:
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wait at least 5 minutes before driving.
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wait at least 10 minutes before driving.
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pump the brake pedal 10 times to build pressure.
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allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems.
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22.
One way to prevent hydroplaning is to:
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use the controlled braking method.
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have less than 4/32 inch tread depth in every major groove on front tires.
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make sure you have enough tread on your tires.
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take curves at higher speeds.
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23.
Service brakes should:
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only be checked by a mechanic.
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always be checked before applying the brakes.
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be checked before each trip.
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All of the above.
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24.
To make the brakes work, air brakes use:
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nitrogen.
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carbon monoxide.
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compressed air.
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hydraulic air.
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25.
When meeting an oncoming vehicle at night, if the other driver does not put their low beams on, you should:
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flash your high beams at the other driver.
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"get back at the other driver" by putting your own high beams on.
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slow down and look straight ahead in your lane.
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look slightly to the right to avoid looking directly at the lights of the oncoming vehicle.
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