CDL DOUBLES TRIPLES PRACTICE TEST TENNESSEE
11.
Your mirrors should be adjusted so that:
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more than half of the mirror shows the vehicle.
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the rear of the vehicle is visible in the mirror.
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no part of the vehicle is visible in the mirror.
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a part of the vehicle is visible in the mirror.
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12.
What is the most important reason to inspect your vehicle?
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Saving money by preventing costly repairs.
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Your safety and that of other road users.
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Achieving the best gas mileage.
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Vehicle inspection is required by federal and state laws.
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13.
If the safety relief valve in the air brake system releases air:
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this will supply more power to the drive wheels.
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this will supply more power to the brakes.
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the valve is fully operational.
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something is wrong.
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14.
To test your parking brake, do the following:
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Speed up to 5 mph, then set the parking brake.
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Speed up to 15 mph, then set the parking brake.
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Set the parking brake, and gently pull against it in a low gear.
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Set the parking brake while going downhill.
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15.
If your ABS fails:
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you will have no brake function, and could lose control.
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you will still have normal brake functions.
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your tires might grab unexpectedly and you could lose control.
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the first step is to get the vehicle off the road and stop.
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16.
When you back under a trailer:
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use lowest reverse gear.
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back the tractor slowly.
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make sure the trailer brakes are locked.
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All of the above.
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17.
You should be especially alert for drunk drivers:
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in the morning.
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late at night.
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in the early evening.
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around shopping areas.
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18.
During a walk around inspection of a double or triple trailer, make sure that the converter dolly air tank drain valve is _____ and the glad hands are ______.
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open; not connected
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closed; properly connected
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open; properly connected
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closed; not connected
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19.
Rims with welding repairs:
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can be used for tires in the front of the vehicle.
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are not safe.
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are acceptable only when carrying a heavy load.
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can be used for tires in the rear of the vehicle.
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20.
Air tank drains:
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protect the tanks and the rest of the system from too much pressure.
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are used to remove water and oil from the air tanks.
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should not be used in wet weather.
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are used to move air to the brakes.
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