10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free AZ-CDL questions are organized by exam domain, so you can see how each part of the Arizona CDL Permit Test blueprint is tested. Reveal the answer and explanation under each question.
A loaded straight truck is traveling at highway speed when its right-front tire blows. The driver hears a bang, feels heavy vibration, and the truck begins pulling right. What should the driver do first?
Correct answer: C - Grip the wheel firmly, stay off the brake initially, and keep the truck straight
During a pre-trip inspection, the tractor's ABS lamp stays on after the self-check, but a 5-mph service-brake test is smooth with no pull or delay. Which conclusion is most accurate?
Correct answer: A - Normal braking remains available, but anti-lock protection may be unavailable
An otherwise stable 60-foot combination is traveling 50 mph on a dry, level highway. Before adding extra space for traffic, weather, or grade, what minimum following interval applies?
Correct answer: D - 7 seconds
A driver inspected the load before departure and again 40 miles into the trip. Two hours and 110 miles later, the driver takes a meal break. Neither handling nor noise suggests movement. Before resuming, the driver must:
Correct answer: B - Inspect the cargo and securement because every break triggers another check
On a long downgrade, a driver has selected a safe speed of 40 mph and the proper low gear. A firm brake application lasting about three seconds reduces speed to 35 mph. The next step is to:
Correct answer: C - Release the brakes and let speed return to 40 mph before the next application
A tractor-trailer is chocked on level ground. With the engine off, parking brakes released, system stabilized, and service brake fully applied, pressure falls from 105 psi to 100.5 psi in one minute. How should this result be interpreted?
Correct answer: B - Fail, because the applied pressure loss exceeds 4 psi per minute
During a low-air warning test, both system needles fall normally, but the buzzer first sounds at 57 psi. This finding indicates:
Correct answer: D - A failed warning test because the alert must activate before pressure falls below 60 psi
After an emergency descent, the brake drums are extremely hot. The vehicle is on a level paved area, wheel chocks are available, and the driver can remain with it. How should the vehicle be secured while the brakes cool?
Correct answer: A - Chock the wheels and delay setting the spring brakes until the components cool
After coupling, the tug test feels solid. A visual check shows the fifth-wheel jaws closed around the kingpin head rather than the shank. The driver should:
Correct answer: C - Uncouple and re-couple until the jaws lock around the shank with no gap
On a wet curve, a trailer's wheels lock under braking and the trailer starts swinging toward the adjacent lane. Which correction best addresses the cause of the skid?
Correct answer: B - Release braking enough to restore trailer-wheel rotation, then steer smoothly
The full bank has 1,020 more AZ-CDL questions with explanations.
Continue in the free practice test →
View plans