RHODE ISLAND DOUBLES TRIPLES PRACTICE CDL TEST
11.
Which of these is more likely to rollover due to the "crack-the-whip" effect?
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The last trailer of doubles
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The front trailer of 65 ft. conventional doubles
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The last trailer of triples
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12.
You can determine if your vehicle is equipped with ABS (anti-lock braking system) by:
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checking if your vehicle was manufactured after March 1, 1998.
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checking for a yellow ABS malfunction lamp on the instrument panel.
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All of the above.
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13.
When the temperature drops:
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bridges will not freeze.
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bridges will freeze before the road will.
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bridges usually freeze after other parts of the roadway.
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14.
If a load is 10 feet long, the minimum number of tie-downs required is:
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2
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1
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3
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15.
On front tires, tread should be at least:
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4/32 inch
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2/32 inch
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4/16 inch
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16.
If your vehicle has air brakes, to check that air flows to all trailers:
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pull gently on the trailer with the tractor.
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go to the rear of the second trailer and open the emergency line shut-off.
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watch each trailer’s air gauge for a drop of 25 psi.
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17.
Which of the following statements about doubles/triples is true?
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Doubles/triples are more stable than other CMVs.
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A safe speed on a curve for a single trailer combination vehicle may be too fast for a double/triple.
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Doubles/triples may have to go faster around corners than single trailer combination vehicles.
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18.
With an engine fire, you should NOT:
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turn the engine off as soon as possible.
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open the hood.
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shoot foam from the vehicle’s underside.
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19.
Doubles:
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require more reaction time than straight trucks.
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are less likely to rollover than straight trucks.
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None of the above.
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20.
Which of the following is not proper tie-down equipment:
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Ropes
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Bungee cords
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Chains
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