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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 Maine doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The ME CDL doubles triples test covers the following sections of the Maine CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this ME CDL practice test now to prepare for the actual test!
1. If you are feeling sleepy, you should:
pull off the road and rest or take a nap.
slow down and drive on the shoulder of the road.
increase your speed to get to the destination quicker.
2. What factors can cause brakes to fade?
Slippery surfaces and shaded areas.
Excessive heat and brakes out of adjustment.
Dirt roads and in unpaved yards.
3. Texting while operating a commercial motor vehicle is:
acceptable if you are contacting your dispacther.
acceptable if you are contacting your supervisor.
4. Combination vehicles usually require _________ single commercial vehicles.
more driving skill than
the same level of skill as
less driving skill than
5. Which of the following statements about drivers fixing an engine or changing a tire is true?
Roadway traffic is not a danger to them.
They usually pay attention to the danger roadway traffic is to them.
They often do not pay attention to roadway traffic.
6. When backing, you should:
back quickly.
use the mirrors on both sides.
only use mirror on the driver's side.
7. If driving a heavy vehicle, you should:
stay in the right lane.
stay in the left lane.
try to pass other vehicles going uphill.
8. If you are caught in strong winds, you should:
immediately take your foot off the accelerator.
speed up while keeping a strong grip on the steering wheel.
keep a strong grip on the steering wheel and slow down or pull off the roadway.
9. Overloading a vehicle with cargo can have negative effects on all of the following except:
Weight limits
10. When parked on the side of the road, you should:
flash your brake lights.
turn off all lights.
use the 4-way emergency flashers.
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ME CDL Doubles Triples Test

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