TENNESSEE CDL AIR BRAKES PRACTICE TEST
21.
ABS:
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makes it easier to turn.
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makes it easier to break.
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helps you avoid wheel lock up.
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allows the wheels to lock up.
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22.
Brakes out of adjustment can cause the other brakes to:
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overheat and fade.
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last longer.
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work better.
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apply more braking power.
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23.
How should you apply the brakes when going down a steep downgrade?
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Apply the brakes when you reach the bottom of the downgrade.
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Apply the brakes as hard as you can without locking the wheels.
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Apply the brakes whenever you reach your safe speed, until your speed has been reduced to 5 mph below your safe speed.
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You should not brake, and only use engine braking to prevent brake failure.
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24.
Before driving a truck or bus with a dual air brake system, the minimum pressure in both the primary and secondary
systems should be at least:
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75 psi.
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100 psi.
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50 psi.
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130 psi.
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25.
An Anti-lock Braking System (ABS):
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always shortens your stopping distance.
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increases your normal braking capability.
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lets you drive faster.
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keeps your wheels from locking up when you brake hard.
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