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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 West Virginia doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The WV CDL doubles triples test covers the following sections of the West Virginia CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this WV CDL practice test now to prepare for the actual test!
1. Right after it starts to rain, the road is very slippery. Why?
Because black ice may form on the road.
Because rain is very slippery.
Because the water mixes with oil left on the road by vehicles.
None of the above.
2. If you are caught in strong winds, you should:
keep a strong grip on the steering wheel and slow down or pull off the roadway.
speed up while keeping a strong grip on the steering wheel.
immediately take your foot off the accelerator.
None of the above.
3. Which of the following will NOT help you prevent rollover?
Driving slowly around turns.
Using the controlled braking method.
Keeping the cargo as close to the ground as possible.
All of the above.
4. When driving a double or triple, you should:
drive in the left lane whenever possible.
increase your following distance.
decrease your following distance.
drive with emergency flashers on.
5. The posted speed limit for a curve:
is safe for trucks or buses, but it may be too fast for cars.
is safe for all vehicles.
is optional and may be exceeded.
may be too fast for many trucks or buses.
6. When you turn suddenly while pulling doubles, which trailer is most likely to turn over?
The rear trailer is twice as likely to turn over as the tractor.
The front trailer is twice as likely to turn over as the tractor.
All trailers are equally likely to turn over.
None of the above.
7. Most heavy-duty vehicles use:
solid brakes.
hydraulic brakes.
air brakes.
pressure brakes.
8. Which of the following statements is true?
There is no way that short circuits due to damaged insulation can cause a vehicle fire.
Poor cargo ventilation is a common cause of fire.
Carrying a properly charged and rated fire extinguisher will help prevent fires.
Under-inflated tires will NOT cause a vehicle fire.
9. When driving at night, you should use ________ when you can.
emergency flashers
indicator lights
high beams
low beams
10. Too little weight on the driving axles can cause:
poor visibility.
longer stopping distances.
mechanical damage.
poor traction.
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WV CDL Doubles Triples Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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