MASSACHUSETTS CDL DOUBLES TRIPLES PRACTICE TEST
11.
Rims with welding repairs:
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can be used for tires in the front of the vehicle.
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are acceptable only when carrying a heavy load.
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are not safe.
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can be used for tires in the rear of the vehicle.
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12.
If a load is 10 feet long, the minimum number of tie-downs required is:
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1
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2
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4
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3
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13.
ABS:
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helps you stop faster.
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improves your visibility at night.
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helps you avoid skids caused by over braking.
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may cause your wheels to lock when you break hard.
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14.
The posted speed limit for a curve:
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is optional and may be exceeded.
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is safe for trucks or buses, but it may be too fast for cars.
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is safe for all vehicles.
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may be too fast for many trucks or buses.
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15.
When you push in the red trailer air supply knob, this will:
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open the emergency line shut-off valve at the rear of the last trailer.
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disconnect the air lines from the trailer.
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supply air to the emergency supply lines.
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disconnect the electrical connector.
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16.
When driving a 60-foot truck at 50 mph, your minimum following distance should be:
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6 seconds
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5 seconds
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3 seconds
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7 seconds
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17.
What is true about tire chains?
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You should learn how to put the chains on before you need to do it in snow.
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You should watch the official video tutorial by the manifacturer before putting them on.
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You must carry the at least 6 chains and extra cross-links.
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All of the above.
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18.
Which of the following vehicles is most likely to turn over?
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3 axle tractor semitrailer
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5 axle tractor semitrailer
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Triple trailer
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65 ft. conventional double
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19.
If coolant has to be added to a system without a recovery tank, you should:
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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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keep the engine running while adding coolant.
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turn the radiator cap quickly to the first stop.
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20.
If there is a fire and you are not sure what to use to put it out, you should:
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use a fire extinguisher.
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use water.
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wait for firefighters.
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use dry powder.
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