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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. Air brakes:
should be used only when driving on wet roads.
can improve fuel efficiency.
are prohibited on larger vehicles.
are an effective way to stop large and heavy vehicles.
2. When driving in heavy traffic, the safest speed is:
the same speed as the other vehicles.
slower than the other vehicles.
half the speed of the other vehicles.
faster than the other vehicles.
3. Overloading a vehicle with cargo can have negative effects on all of the following except:
Speed control
Weight limits
4. Exhaust system parts should NOT:
rub against fuel system parts.
be loose.
rub against tires.
All of the above.
5. Do NOT use the parking brakes:
when you park for less than two hours.
if the brakes are very hot.
to test that they work.
when you leave your vehicle.
6. Excessive use of the service brakes results in overheating. Too much heat can:
cause the brakes apply unevenly.
cause the brakes to grab.
make the brakes stop working.
cause the brakes to squeak.
7. Why should you back toward the driver's side?
You can see better and watch the rear of your vehicle by looking out the side window.
You can more easily correct any steering errors.
Using double clutching requires practice.
All of the above.
8. When you discover a fire, if the trailer doors are hot you should not open them because:
opening the doors lets air in and may make the fire flare up.
with air many fires do less damage.
you should use the fire extinguisher on the door.
the temperature of the trailer should not be changed in any way.
9. You are driving a modern truck with a manual transmission. When going down a hill you should usually:
use a lower gear than would be required to go up the hill.
shift into neutral and coast.
downshift after your speed has already built up.
use the same gear you would use to go up the hill.
10. Which of the following is a good way to avoid becoming an aggressive driver?
Be realistic about your travel time.
Avoid talking on your cell phone.
Keep your following distance reasonable.
All of the above.
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AR CDL Doubles Test

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