When driving through a work zone, follow the posted speed limits. If workers are present, you should slow to a speed that is even lower than the posted limit.

Slow to a speed under the posted speed limit.

Continue driving at the posted speed limit.

Slow to a speed under the posted speed limit.

Texting and driving is dangerous for everyone on the road. It is illegal to text while operating a CMV.

Acceptable for drivers contacting their employers.

In an air brake system, the air compressor governor controls when the air compressor pumps air into the storage tanks. It stops pumping if the pressure in the tanks becomes too high, and begins pumping if the pressure becomes too low.

It stops the compressor from pumping air.

It turns on the air compressor.

Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Manually operated air tank drains must be opened daily to remove this build-up.

Opened to drain the tanks after each day.

If your mirrors or wiper blades become icy while you are driving, you can expect the road surface to be icy as well.

You can expect ice to be on the roadway.

There will not be ice on the roadway.

Foundation brakes are used on each wheel of a CMV. The most common type of foundation brake is the s-cam drum brake.

Only on the front wheels of a vehicle.

Only on the rear wheels of a vehicle.

Arizona Driver's Examination

Double #1

FREE Double Triple Test Online | Arizona 2024

Train for FREE with our Arizona CDL double triple practice test online. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a AZ CDL double triple license in 2021, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

FREE Double Triple Test Online | Arizona 2024

1 . If a worker is present in a work zone, you should:

2 . Texting while operating a CMV is:

3 . What does the air compressor governor do?

4 . Manual air tank drains should be:

5 . If there is ice on the front of your side mirror:

6 . To prevent a trailer from rolling over while turning, you should:

7 . Foundation brakes are used:

Search the best driving school in your neighbourhood