AIR BRAKES CDL PRACTICE TEST - ILLINOIS
11.
What factors can cause brakes to fade or fail?
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Not pressing the brake pedal hard enough.
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Going too slow.
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Overheating, low air pressure or water in the air tanks.
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Not taking your foot off the accelerator.
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12.
If the ABS is not working:
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the vehicle will have weak brakes.
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you still have normal brake functions.
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the vehicle will have no brakes.
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None of the above.
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13.
When driving on long and/or steep downgrades, to select an appropriate safe speed you should consider:
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the road conditions.
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the total weight of the vehicle and cargo.
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the length of the grade.
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All of the above.
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14.
Empty trucks require _____ stopping distances because empty vehicles have ______ traction.
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less; more
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greater; less
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less; less
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greater; more
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15.
One way to prevent hydroplaning is to:
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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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use the controlled braking method.
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