CDL DOUBLES PRACTICE TEST INDIANA
11.
Blocking is used to:
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keep the cargo from sliding.
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protect the cargo from weather.
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protect people from spilled cargo.
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All of the above.
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12.
In newer vehicles with air brakes, you put on the parking brake:
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using a P-shaped, yellow control knob.
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using a diamond-shaped, yellow, push-pull control knob.
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placing the transmission in Park.
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moving the orange push-pull lever to the right.
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13.
If coolant has to be added to a system without a recovery tank, you should:
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turn the radiator cap quickly to the first stop.
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keep the engine running while adding coolant.
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wait until the engine has cooled before adding coolant.
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never use thick cloth to touch the radiator cap.
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14.
The tractor protection valve:
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keeps air from going out if the air compressor develops a leak.
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keeps your wheels from locking up when you brake hard.
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prevents the trailer from being accidentally released.
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keeps air in the brake system should the trailer develop a bad leak.
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15.
Retarders:
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apply their
braking power whenever
you push on the accelerator.
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help prevent accidents by applying extra braking power to the non-drive wheels.
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help slow a vehicle and reduce brake wear.
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All of the above.
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16.
You must have at least _____ inch tread depth in every major groove on front tires.
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6/32
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2/32
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4/32
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3/32
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17.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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18.
Which of the following is most likely to roll over?
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The rear trailer of a triple
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The front trailer of a double
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The middle trailer of a triple
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The rear trailer of a double
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19.
Empty trucks:
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may have poor traction.
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have better traction than fully-loaded trucks.
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require shorter stopping distances than fully-loaded trucks.
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None of the above.
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20.
Cargo should be properly covered:
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to block your view or someone else’s.
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to protect the weather from the cargo.
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to protect people from spilled cargo.
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All of the above.
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