CDL DOUBLES PRACTICE TEST TENNESSEE

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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!
1. Which of the following is most likely to roll over?
The rear trailer of a double
The middle trailer of a triple
The front trailer of a double
The rear trailer of a triple
2. Combination vehicles have __ air lines.
4
3
1
2
3. When driving in extremely hot weather, if the air pressure in the tires is too high, you should:
let air out of the tires to decrease pressure.
call your supervisor.
continue driving.
stop and remain stopped until the tires cool off.
4. When more cargo is piled up in a truck, the center of gravity moves:
higher up from the road.
to the left side of the truck.
to the right side of the truck.
closer to the ground.
5. Strong winds can make it difficult to stay in your lane especially when driving:
heavier vehicles.
lighter vehicles.
flatbed trailers.
vehicles with ABS.
6. What is Gross Vehicle Weight?
The total weight of a single vehicle, excluding its load
The total weight of a combination of vehicles excluding the load
The total weight of the cargo
The total weight of a single vehicle, including its load
7. Before connecting the converter dolly to the rear trailer, make sure that:
the shut-off valves at the rear of the first trailer are open.
the locking jaws rest on the kingpin.
the kingpin rests on the fifth-wheel.
the trailer height is slightly lower than the center of the fifth-wheel.
8. When driving in heavy traffic, the safest speed is:
the same speed as the other vehicles.
half the speed of the other vehicles.
slower than the other vehicles.
faster than the other vehicles.
9. An ABS system:
requires a change in the way you brake.
helps increase a vehicle's stopping power.
is a safety anti-skid braking system.
decreases your stopping distance.
10. It is safer to drive over (rather than to avoid) which of the following?
Plastic containers
Paper and cloth sacks
Cardboard boxes
None of the above.
 
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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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