AIR BRAKES PRACTICE TEST - NEW MEXICO
16.
On front tires, tread should be at least:
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2/32 inch
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4/32 inch
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4/16 inch
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17.
If stopped on a hill, how can you start moving without rolling back?
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Release the parking brake before you have applied enough engine power to keep from rolling back.
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Press on the gas pedal, even if you have to roll back a little.
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Partly engage the clutch before you take your right foot off the brake, put on the parking brake if necessary.
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18.
Your vehicle has a dual air brake system. If one air system is very low on pressure, you should:
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bring the vehicle to a safe stop, and have the air brakes system fixed.
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reduce your speed and check the low air pressure warning signal for the other system regularly.
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call your dispatcher or supervisor for instructions.
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19.
Weight that is loaded so there is a high center of gravity:
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reduces the chance that the load will shift to the side or fall off.
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causes greater chance of rollover.
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makes a vehicle easier to handle.
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20.
It is not safe to drive a vehicle that has brake drums with cracks that are longer than ___ the width of the friction area.
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1/4
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3/5
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1/2
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