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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 Arkansas doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The AR CDL doubles triples test covers the following sections of the Arkansas CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this AR CDL practice test now to prepare for the actual test!
1. Most heavy-duty vehicles use:
hydraulic brakes.
solid brakes.
air brakes.
pressure brakes.
2. What is the most important reason to inspect your vehicle?
Saving money by preventing costly repairs.
Your safety and that of other road users.
Vehicle inspection is required by federal and state laws.
Achieving the best gas mileage.
3. When more than one semitrailer is behind the tractor:
the more heavily loaded trailer should be disconnected.
The order doesn't matter.
the lighter trailer should be in the rear.
the more heavily loaded semitrailer should be in the rear.
4. Your mirrors should be adjusted so that:
the rear of the vehicle is visible in the mirror.
no part of the vehicle is visible in the mirror.
a part of the vehicle is visible in the mirror.
more than half of the mirror shows the vehicle.
5. _________ rigs are much more likely to roll over in an accident than _________ rigs.
Empty ; overloaded
Fully loaded ; overloaded
Empty ; fully loaded
Fully loaded ; empty
6. Headache racks:
can blind other drivers.
help you keep weights within legal limits.
protect you from being hit by your cargo.
None of the above.
7. How can you tell if a converter dollie has ABS?
There is a red lamp on the left side of the dolly.
There is a yellow lamp on the left side of the dolly.
There is an ABS plaque on the right side of the dolly.
There is an ABS system on the right side of the dolly.
8. 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.
9. How should you brake if your vehicle loses ABS?
Step on and off the brake pedal several times
Pump the brake repeatedly
Stay off the Brake
Brake as you always have.
10. Most heavy trucks with manual transmissions require ____ to change gears.
double clutching
single clutching
triple clutching
None of the above.
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AR CDL Doubles Triples Test

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