RHODE ISLAND CDL COMBINATION PRACTICE TEST
11.
When going down grades, you should:
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shift up.
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downshift to a lower gear.
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put the transmission in Neutral.
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12.
_________ rigs are much more likely to roll over in an accident than _________ rigs.
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Fully loaded ; overloaded
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Fully loaded ; empty
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Empty ; fully loaded
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13.
To prevent a rollover, the driver should:
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drive slowly around corners, on ramps, and off ramps.
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make quick lane changes if possible.
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drive on the shoulder if possible.
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14.
On
a tractor-trailer equipped with a trailer brake hand
valve, the hand valve can be used to:
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hold compressed air.
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prevent movement of cargo.
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keep from rolling back.
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15.
ABS:
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should only be used on dry roads.
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is an addition to your normal brakes.
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allows you to brake harder.
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16.
The best way to recognize that your trailer has started to skid is:
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by using retarders.
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by hearing squeaking noises from the wheels.
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by seeing it in your mirrors.
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17.
Fully loaded rigs:
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are less likely to roll over than empty rigs.
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are just as likely to roll over as empty rigs.
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are much more likely to roll over than empty rigs.
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18.
You are coupling a tractor to a semi-trailer. You have backed up but are not yet under the trailer. Before backing under the semi-trailer, you should:
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supply air to the trailer system and lock the trailer brakes.
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connect the electrical cord and check the air lines.
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begin raising the landing gear.
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19.
If driving a new vehicle, you should familiarize yourself with the controls and equipment:
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within the first 50 miles.
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before you start driving.
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as you drive.
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20.
Which of the following is true about the trailer hand valve?
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It should be used only to test the trailer brakes.
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The trailer hand valve works the trailer brakes.
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All of the above.
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