SC CDL AIR BRAKES PRACTICE TEST
21.
Which of the following is not a type of retarder?
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Pressure
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Electric
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Hydraulic
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Exhaust
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22.
When you release the brake pedal, the _____ rotates back and a spring pulls the brake shoes away from the drum.
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S-cam
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air compressor belt
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hydraulic brake system
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pressure gauge
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23.
If an aggressive driver is involved in an accident down the road, you should:
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make eye contact with the driver.
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try to get their vehicle to the side of the road.
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confront the aggressive driver.
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stop a safe distance from the accident scene, wait for the police and report the behavior you witnessed.
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24.
Most hydraulic brake failures occur for one of two reasons, one of which is:
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loss of hydraulic pressure.
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relying too much on the engine braking effect.
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excessive downshifting.
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driving in cold weather.
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25.
When driving on slippery roads, you should NOT:
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go slowly.
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try to anticipate stops early.
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use the engine brake.
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watch far enough ahead to keep a steady speed.
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