FREE Arizona CDL Combination Test 2024 (Practice 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:

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 bridges and overpasses?

8. Before leaving your vehicle unattended, you should:

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:

AZ CDL COMBINATION TEST - PRACTICE TEST