AIR BRAKES PRACTICE TEST - MARYLAND
6.
Pressing and releasing the brake pedal unnecessarily can:
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apply more air pressure.
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causes all the air to be lost.
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causes friction, which slows the vehicle.
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let air out faster than the compressor can replace it.
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7.
Too little weight on the driving axles can cause:
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longer stopping distances.
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poor traction.
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poor visibility.
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mechanical damage.
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8.
After supplying air to the trailer brake system, you should check the brake system for crossed air lines by:
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checking the air brake system pressure gauge for signs of major air loss.
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shutting the engine off so you can hear the brakes.
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applying and releasing the trailer brakes and listening for the sound of trailer brakes.
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All of the above.
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9.
You are driving on a steep downgrade. If your safe speed is 35 mph, you should apply the brakes when your speed reaches:
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45 mph
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30 mph
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25 mph
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35 mph
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10.
Your vehicle has air brakes. To stop, you should:
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pull the parking brake control knob out.
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release the accelerator, push in the clutch, and shift to Neutral at the same time.
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push the brake pedal down.
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pump the brake pedal 3 times.
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