In comparison to driving a single vehicle, you should maintain an extended following distance when driving a combination rig. Combinations require longer stopping distances than smaller vehicles.

Longer than when driving a single vehicle.

Shorter than when driving a single vehicle.

About the same as when driving a single vehicle.

Longer than when driving a single vehicle.

When a vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is called off-tracking. This effect is especially pronounced on vehicles with trailers.

The front and rear wheels will move in different paths.

The vehicle must use at least two lanes.

The front and rear wheels will move in different paths.

It is best to allow the rear wheels to drive over the curb.

When driving a tractor-trailer combination equipped with an Anti-Lock Braking System (ABS), you should brake in the same manner that you would if operating a vehicle without ABS.

Brake as you would when driving a vehicle without ABS.

Not depress the brakes as much as you would when driving a vehicle without ABS.

Use extra braking force to ensure the ABS kicks in.

Brake as you would when driving a vehicle without ABS.

Try to not brakes as often as you would when driving a vehicle without ABS.

On newer vehicles, the trailer air supply control is an eight-sided red knob. It's used to control the tractor protection valve.

It is a triangular yellow knob.

The emergency air line (also known as the supply line) has two functions. The first is to supply air to the trailer air tanks on a combination vehicle, and the second is to control the emergency brakes.

Supplies air to the trailer air tanks.

Is controlled by the foot brake.

Is connected to the relay valves.

Supplies air to the trailer air tanks.

To test the trailer service brakes, you should first ensure that the braking system has a normal air pressure level, then release the parking brake. You should then move the vehicle forward slowly and apply the brakes with the hand control. If the trailer service brakes are working properly, you will feel the brakes activate.

Move the vehicle forward slowly and apply the brakes with the hand control.

Move the vehicle forward slowly and apply the brakes with the brake pedal.

Reverse the vehicle slowly and apply the brakes with the hand control.

Reverse the vehicle slowly and apply the brakes with the brake pedal.

Move the vehicle forward slowly and apply the brakes with the hand control.

Combination Vehicles Practice Test | Wyoming 2025 #2

Train for FREE online with our Wyoming CDL combination vehicle test. 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 WY combination license in 2025, 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 for issuing a combination license may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

Combination Vehicles Practice Test | Wyoming 2025 #2

1 . When driving a combination rig, following distance should be:

2 . When a combination vehicle goes around a corner:

3 . When driving a trailer with ABS, you should:

4 . Push in the trailer air supply control to:

5 . What does the trailer air supply control look like?

6 . The emergency air line:

7 . To test the trailer service brakes, you should:

Search the best driving school in your neighbourhood