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CDL DOUBLES TRIPLES PRACTICE TEST ARIZONA

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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 Arizona doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The AZ CDL doubles triples test covers the following sections of the Arizona CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this AZ CDL practice test now to prepare for the actual test! Important: Triple trailers are not legal in Arizona.
1. Air brakes use ________ to make the brakes work.
compressed air
compressed gas cylinders
compressed gases
2. To test your parking brake, do the following:
Set the parking brake while going downhill.
Speed up to 5 mph, then set the parking brake.
Set the parking brake, and gently pull against it in a low gear.
3. Before connecting the converter dolly to the rear trailer, make sure that:
the kingpin rests on the fifth-wheel.
the shut-off valves at the rear of the first trailer are open.
the trailer height is slightly lower than the center of the fifth-wheel.
4. If your brakes fail on a steep mountain downgrade, you should:
decide what to do as soon as you know your brakes do not work.
stay on the road and keep looking for the next available escape ramp.
slow down until your vehicle comes to a complete stop.
5. During a walk around inspection of a combination vehicle, drivers should check that:
all locking pins are present and locked in place.
the glide plate is securely mounted to the trailer frame.
All of the above.
6. To know if your vehicle is equipped with ABS, look for:
a yellow ABS malfunction lamps on the instrument panel.
the ABS logo on the steering wheel.
an ABS placard.
7. Doubles and triples:
can be turned suddently due to the low center of gravity.
can be stopped suddenly due to their weight.
can't be turned suddenly.
8. Which of the following vehicles is most likely to turn over?
3 axle tractor semitrailer
65 ft. conventional double
Triple trailer
9. If you experience a loss of hydraulic pressure, you should do all of the following except:
Pump the brakes
Put the transmission in Neutral
Downshift
10. After an accident, an improper use of flares could cause:
the springs to put on the brakes.
a fireĀ if spilled fuel is on the ground.
air pressure to build from 50 to 100 psi within 2 minutes.
 
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AZ CDL Doubles Triples Test

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