AIR BRAKES CDL PRACTICE TEST - CALIFORNIA
21.
To control your speed on a downgrade, you should:
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use engine braking.
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fully apply the brakes.
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use controlled braking.
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22.
An Anti-lock Braking System (ABS):
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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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23.
How many reflective triangles/emergency reflectors should you carry?
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4
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3
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2
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24.
Before driving a vehicle with a dual brake brake system, the driver should:
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pump the brake pedal 10 times to build pressure.
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wait at least 10 minutes before driving.
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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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25.
Which of the following can cause brakes to fade or fail?
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Brakes out of adjustment
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Excessive use of the service brakes
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All of the above.
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