NY CDL DOUBLES TRIPLES PRACTICE TEST
11.
To use the controlled braking method in an emergency, you should:
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pump the brake pedal 3 times.
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apply the brakes as hard as you can without locking the wheels.
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apply your brakes all the way, and release the brakes when the wheels lock up.
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apply the brakes when the wheels lock up.
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12.
Which of the following is not a sign of fatigue?
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Rubbing eyes
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Yawning repeatedly
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Keeping a steady speed
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Frequent blinking
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13.
If the air compressor is belt-driven, you should check the air compressor drive belt before each trip. The belt should be:
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tight.
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loose.
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cracked.
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worn.
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14.
When you push in the red trailer air supply knob, this will:
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disconnect the electrical connector.
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disconnect the air lines from the trailer.
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open the emergency line shut-off valve at the rear of the last trailer.
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supply air to the emergency supply lines.
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15.
Excessive use of the service brakes results in overheating. Too much heat can:
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cause the brakes apply unevenly.
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make the brakes stop working.
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cause the brakes to squeak.
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cause the brakes to grab.
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16.
If your vehicle is equipped with air brakes, loss of air pressure in the emergency line will cause:
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the trailer supply valve to open.
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the springs to put on the brakes.
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the vehicle to slide back and forth.
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the trailer emergency brakes to come on.
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17.
Empty trucks:
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require a shorter stopping distance than full trucks.
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require a greater stopping distance than full trucks.
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require the same stopping distance than full trucks.
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None of the above.
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18.
The safety valve is usually set to open at:
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200 psi.
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100 psi.
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150 psi.
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75 psi.
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19.
What can cause poor traction?
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Overloading the truck.
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Too much weight on the steering axle.
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Too little weight on the driving axles.
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All of the above.
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20.
Which of the following statements about doubles/triples is true?
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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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Doubles/triples are more stable than other CMVs.
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All of the above.
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