AIR BRAKES CDL PRACTICE TEST - ARKANSAS
16.
To control your speed on a downgrade, you should:
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coast in neutral.
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fully apply the brakes.
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use engine braking.
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use controlled braking.
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17.
Brake lag is:
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the distance your vehicle will continue to travel, in ideal conditions, before you hit the brakes.
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the time required for the air brakes to work after the brake pedal is pushed.
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the distance your vehicle will travel, in ideal conditions, while you are braking.
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the amount of air pressure required to stop the vehicle.
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18.
Which of the following is NOT a warning sign of fatigue?
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Heavy eyelids
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Frequent blinking
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Trouble remembering the last few miles driven
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Driving at the speed of the traffic
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19.
When driving on long and/or steep downgrades, to select an appropriate safe speed you should consider:
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the length of the grade.
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the total weight of the vehicle and cargo.
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the road conditions.
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All of the above.
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20.
The safety relief valve is usually set to open at ____ psi.
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50
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150
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100
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75
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