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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Arizona CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Arizona CDL Manual. Take this practice test now to prepare for the actual AZ CDL combination test!
1. Most hydraulic brake failures occur for one of two reasons, one of which is:
loss of hydraulic pressure.
relying too much on the engine braking effect.
excessive downshifting.
2. When a vehicle goes around a corner, the rear wheels:
follow the same path as the front wheels.
follow a different path than the front wheels.
will turn freely.
3. You are coupling a tractor to a semi-trailer. After checking the trailer height but before supplying air to the trailer, you should:
inspect the fifth-wheel.
connect the air lines to the trailer.
lock the trailer brakes.
4. When more cargo is piled up in a truck, the center of gravity moves:
higher up from the road.
closer to the ground.
to the left side of the truck.
5. What is a pull up when referring to truck driving?
A driving maneuver used to pull your vehicle over to the side of the road and stop.
When a driver stops and pulls forward to get a better position.
A specific maneuver used to decelerate smoothly in the exit lane.
6. The tire load rating is stated:
on the side of each tire.
inside the suspension system.
on each axle.
7. Which of the following may have reduced the clearances since the heights were posted at bridgesĀ and overpasses?
Repaving of the road
The weight of a cargo
8. Before leaving your vehicle unattended, you should:
Apply the parking brake.
Remove the keys.
All of the above.
9. Blocking _______________ to keep it from sliding.
goes from the upper part of the cargo to the floor
is used in the front, back, and/or sides of a piece of cargo
is used only in the back of a piece of cargo
10. Strong winds can make it difficult to stay in your lane, especially when:
driving at speeds below 40 mph.
coming out of tunnels.
going into tunnels.
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AZ CDL Combination 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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