DOUBLES TRIPLES TEST TN - CDL 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!
1. On any upgrade, _________ – the more you will have to use lower gears to climb hills or mountains.
the steeper the grade
the heavier the load
the longer the grade
All of the above.
2. Air brakes use ________ to make the brakes work.
compressed gases
compressed gas cylinders
compressed oil
compressed air
3. When your vehicle starts to skid, you must take action to:
accelerate and countersteer.
use controlled braking.
restore traction to the tires.
use stab braking.
4. Doubles/triples are:
usually faster than most CMVs.
easier to drive than other CMVs.
less stable than other CMVs.
more stable than other CMVs.
5. When driving at night, you should use ________ when you can.
high beams
emergency flashers
indicator lights
low beams
6. If there is a fire and you are not sure what to use to put it out, you should:
use water.
wait for firefighters.
use a fire extinguisher.
use dry powder.
7. Pre-trip inspections of doubles and triples should:
be done once a week.
be done by the shipper.
take more time than inspecting straight trucks.
take less time than inspecting straight trucks.
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. If there is a fire in your vehicle, do NOT:
pull into a service station.
notify emergency services.
park in an open area.
park away from buildings and other vehicles.
10. Rollovers happen when drivers:
turn too slowly.
stop too often.
brake too hard.
turn too fast.
 
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TN CDL Doubles Test

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