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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 Connecticut doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The CT CDL doubles triples test covers the following sections of the Connecticut CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this CT CDL practice test now to prepare for the actual test!
1. The last trailer of triples is ______ as likely to turn over as a five-axle tractor.
5 times
4 times
3.5 times
2. You hear a loud "bang" which sounds like a tire blowout. You should:
inspect your tires with your mirrors.
assume you have a tire failure.
check the tires at the next stop.
keep driving as normal.
3. Which of the following statements about traveling alongside other vehicles is true?
You should never drop back or pull forward to make sure the other driver can see you.
You should travel next to other vehicles whenever possible.
You should avoid traveling next to other vehicles whenever possible.
None of the above.
4. Doubles/triples are:
more stable than other CMVs.
less stable than other CMVs.
easier to drive than other CMVs.
usually faster than most CMVs.
5. If the drive wheels begin to spin, you should:
wait 4-5 seconds before applying the accelerator.
accelerate smoothly and change gears as necessary.
apply your brakes all the way.
take your foot off the accelerator.
6. Watch out for black ice:
when it is snowing.
any time the temperature is below freezing and the road looks wet.
right after it starts to rain.
when the temperature is above freezing and the road is dry.
7. To prevent getting sleepy while driving, you should:
drive alone whenever possible.
close the vent.
keep the cab warm.
keep cool by opening the window.
8. Foundation brakes are used:
at each wheel.
only with the front wheels.
only with the right wheels.
only with the rear wheels.
9. If your brakes fail on a steep mountain downgrade, you should:
use an escape ramp if it is available.
leave the road immediately.
go right if the shoulder is clear.
change lanes after making sure there is enough room.
10. It's very important to distribute the cargo so it is:
as low as possible.
piled up.
as high up as possible.
in the centre of the load.
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Doubles Triples CT CDL Test

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