NORTH CAROLINA CDL DOUBLES TRIPLES PRACTICE TEST
11.
How can you tell if a converter dollie has ABS?
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There is an ABS plaque on the right side of the dolly.
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There is an ABS system on the right side of the dolly.
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There is a red lamp on the left side of the dolly.
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There is a yellow lamp on the left side of the dolly.
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12.
After the pre-trip inspection, drivers should inspect their cargo and its securing devices again within ________ after beginning the trip.
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25 miles
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20 miles
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two hours
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50 miles
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13.
When trying to put out an electrical fire you should:
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use a B or C extinguisher.
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use an A extinguisher.
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use water.
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use an D extinguisher.
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14.
What is the minimum tread depth for tires other than front tires?
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4/32 inch
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4/16 inch
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2/32 inch
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8/32 inch
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15.
You are more at risk of being fatigued:
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after getting more than 8 hours of sleep.
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when driving during the day.
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when stopping periodically during long trips.
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when driving alone.
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16.
When coupling a double or triple, ________ should be attached last.
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the middle trailer.
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the more heavily loaded trailer.
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the trailer right behind the cab.
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None of the above.
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17.
Doubles/triples are:
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more stable than other CMVs.
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easier to drive than other CMVs.
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less stable than other CMVs.
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usually faster than most CMVs.
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18.
When coupling, you should:
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make sure the trailer wheels are not chocked.
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make sure the sliding fifth-wheel is locked.
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make sure the trailer kingpin is bent.
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be aware that wrong coupling and uncoupling can be very dangerous.
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19.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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20.
When checking the engine compartment in a vehicle inspection, you should check all of the following except:
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Shock absorbers
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Coolant level in radiator
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Windshield washer fluid level
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Engine oil level
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