TENNESSEE CDL AIR BRAKES PRACTICE TEST
16.
Before starting down a hill, you should:
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release the accelerator and shift to Neutral at the same time.
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slow down and shift to a lower gear.
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apply the brakes hard.
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look for an escape route.
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17.
The stop light switch:
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turns on the brake lights when you put on the air brakes.
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tells you when you need to use your parking brake instead of the service brake.
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should be used to fend off tailgaters.
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warns you when the air supply pressure drops below 55 psi.
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18.
Typically an air system is fully-charged at:
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250 psi
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125 psi
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75 psi
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25 psi
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19.
On front tires, tread should be at least:
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1/16 inch
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4/16 inch
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4/32 inch
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2/32 inch
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20.
To prevent rollover, you should:
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go slowly around turns.
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drive slowly around on ramps and off ramps.
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keep the cargo as close to the ground as possible.
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All of the above.
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