TN CDL DOUBLES TRIPLES PRACTICE TEST
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Safely pulling double and triple trailers requires knowledge and skill. If you want to pull double or triple trailers, you must add the Doubles/Triples (T) endorsement to your Class A CDL. The Tennessee doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The TN CDL doubles triples test covers the following sections of the Tennessee CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this TN CDL practice test now to prepare for the actual test!
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1.
If you become drowsy while driving, you should:
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open the windows to get some fresh air.
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take a break.
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drink plenty of coffee.
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try to fight it.
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2.
If you are feeling sleepy, you should:
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slow down and drive on the shoulder of the road.
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pull off the road and rest or take a nap.
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increase your speed to get to the destination quicker.
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None of the above.
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3.
If coolant has to be added to a system without a recovery tank, you should:
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never use thick cloth to touch the radiator cap.
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wait until the engine has cooled before adding coolant.
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turn the radiator cap quickly to the first stop.
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keep the engine running while adding coolant.
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4.
When a tire fails, you should:
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apply the brakes as hard as you can without locking the wheels.
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brake in a way that will keep your
vehicle in a straight line.
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stay off the brake.
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push the brake pedal down gradually.
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5.
To know how much space you should keep in front of you when driving at speeds below 40 mph, one good rule says you need at least ______ for each ______ of vehicle length.
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1 second; 10 feet
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3 seconds; 50 feet
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1 second; 5 feet
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2 seconds; 10 feet
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6.
On front tires, tread should be at least:
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4/16 inch
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1/16 inch
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4/32 inch
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2/32 inch
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7.
Driving in very hot weather:
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can decrease oil pressure.
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can make it difficult to stay in your lane.
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should never be done.
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can increase tire pressure.
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8.
Watch out for black ice:
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right after it starts to rain.
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when it is snowing.
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when the temperature is above freezing and the road is dry.
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any time the temperature is below freezing and the road looks wet.
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9.
Which of the following is not a braking system on a truck?
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Emergency brake
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Parking brake
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Service brake
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Steering brake
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10.
What factors can cause brakes to fade?
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Slippery surfaces and shaded areas.
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Gravel and tar.
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Excessive heat and brakes out of adjustment.
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Dirt roads and in unpaved yards.
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TN CDL Doubles Triples Test
| Number of questions: | 20 |
| Correct answers to pass: | 16 |
| Passing score: | 80% |
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