MA CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
When a combination vehicle goes around a corner:
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the rear wheels of the trailer will never off-track.
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the driver must keep the rear of your vehicle far away from the curb.
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the front and rear wheels follow a different path.
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All of the above.
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12.
The best way to recognize that your trailer has started to skid is:
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by feeling the brakes come on.
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by recognizing tire failure.
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by opening the window and feeling the front of the mirror.
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by seeing it in your mirrors.
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13.
When driving a double or triple, you should:
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drive with emergency flashers on.
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drive in the left lane whenever possible.
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increase your following distance.
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decrease your following distance.
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14.
When inspecting the coupling, make sure the fifth-wheel jaws have closed around the:
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the brake camshaft.
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shank of the kingpin.
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the electrical cord.
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head of the kingpin.
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15.
The trolley valve should be used only:
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in driving.
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to test the trailer brakes.
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in an emergency.
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to prevent skids.
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16.
Texting is:
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about as safe as adjusting the radio.
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safer than talking on a cell phone.
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the most dangerous distraction.
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safer than engaging in conversation with a passenger.
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17.
For safe handling, the heaviest trailer should be:
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behind the tractor.
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the second trailer in a triple.
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the last trailer.
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None of the above.
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18.
Older trailers do not have spring brakes. If the air supply leaks away:
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there will be no emergency brakes.
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the ABS won't work properly.
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the trailer will stop normally.
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All of the above.
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19.
If an item placed on a flatbed trailer is 7 feet long, it should have __ tie-downs.
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3
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2
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1
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7
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20.
Another name for front-end header boards is:
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cargo stopper.
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headache racks.
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containerized racks.
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head belt.
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