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WV 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 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. Which of the following is most likely to roll over?
The rear trailer of a triple
The front trailer of a double
The rear trailer of a double
The middle trailer of a triple
2. If the drive wheels begin to spin, you should:
apply your brakes all the way.
accelerate smoothly and change gears as necessary.
take your foot off the accelerator.
wait 4-5 seconds before applying the accelerator.
3. To know if your vehicle is equipped with ABS, look for:
the ABS shipping paper.
a yellow ABS malfunction lamps on the instrument panel.
the ABS logo on the steering wheel.
an ABS placard.
4. Many large vehicles have convex (curved, "spot, "fisheye") mirrors. Convex mirrors:
misrepresent reality by showing a larger area than flat mirrors.
are illegal in most states.
make things look smaller and farther away than they really are.
None of the above.
5. When should you downshift automatic transmissions?
When going down steep grades.
When you want to go faster.
Watch your tachometer, and downshift when your engine reaches the top of the range.
When you start to get drowsy.
6. An item that is 15 feet long placed on a flatbed trailer should have at least:
15 tie-downs.
1 tie-down.
3 tie-downs.
2 tie-downs.
7. If the air compressor is belt-driven, you should check the air compressor drive belt before each trip. The belt should be:
tight.
cracked.
worn.
loose.
8. Which of these describes the proper braking technique when driving on a long and steep downgrade?
Release the brakes until your speed is 5 mph above your safe speed, then apply the brakes. When your speed has decreased to your safe speed, repeat the previous steps.
Apply the brakes until your speed has been reduced to 5 mph, then release the brakes. When your speed has increased to your safe speed, repeat the previous steps.
Apply the brakes. When your speed has been reduced to 5 mph below your safe speed, release the brakes. When your speed has increased to your safe speed, repeat the previous steps.
All of the above.
9. 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.
10. Doubles and triples are:
easier to drive than other combination vehicles.
more likely to turn over than other combination vehicles because of the "crack-the-whip" effect.
more stable than straight trucks.
less likely to turn over than other combination vehicles.
 
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WV CDL Doubles Triples Test

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