DOUBLES TRIPLES TEST MA - CDL PRACTICE TEST
11.
Most heavy duty vehicles use ___ air brake systems for safety.
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triple
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reduced
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single
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dual
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12.
When possible, you should park:
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on the roadway.
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so you will have to back up when you leave.
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on the shoulder.
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so you will be able to pull forward when you leave.
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13.
When connecting to the rear trailer, the trailer height should be:
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lower than the center of the fifth-wheel.
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the same height as the fifth-wheel.
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higher than the center of the fifth-wheel.
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None of the above.
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14.
Which of the following is not a type of retarder?
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Exhaust
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Pressure
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Electric
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Hydraulic
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15.
Which of the following is not proper tie-down equipment:
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Ropes
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Chains
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Straps
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Bungee cords
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16.
Doubles/triples are:
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less stable than other CMVs.
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usually faster than most CMVs.
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easier to drive than other CMVs.
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more stable than other CMVs.
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17.
Exhaust system parts should NOT:
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rub against fuel system parts.
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rub against tires.
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be loose.
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All of the above.
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18.
Empty trucks:
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require shorter stopping distances than fully-loaded trucks.
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have better traction than fully-loaded trucks.
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may have poor traction.
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None of the above.
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19.
Air storage tanks:
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are installed in the first tank the air compressor pumps air to.
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use parts of the service brake systems to stop the vehicle in a brake system failure.
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pump air into the air storage tanks.
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hold compressed air for the brakes.
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20.
You should always try to back toward the driver's side because:
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you can more easily correct any steering errors.
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you can watch the rear of your vehicle out the side window.
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backing toward the left side is more dangerous.
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None of the above.
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