MI CDL AIR BRAKES PRACTICE TEST
16.
Having ABS on only the trailer:
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is very dangerous.
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makes the trailer more likely to swing out.
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still gives you more control over your vehicle during braking.
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17.
With air brake vehicles, you should use the parking brakes:
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only during the vehicle inspection test.
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whenever you leave the vehicle unattended.
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as little as possible.
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18.
If you get stuck on railroad tracks, you should:
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have a helper push your vehicle.
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stay in the vehicle and call for help.
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get out of the vehicle and away from the tracks.
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19.
What factors can cause brakes to fade?
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Slippery surfaces and shaded areas.
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Excessive heat and brakes out of adjustment.
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Dirt roads and in unpaved yards.
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20.
To test the air leakage rate, with a fully-charged air system you should ____________ and time the air pressure drop.
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release the parking brake, leave the engine running
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turn off the engine, release the parking brake
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put alcohol into the air system, run the engine at a fast idle
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