When coupling, make sure you couple matching glad hands. They are often color-coded to help drivers avoid mistakes. Typically, blue is used for service lines and red is used for emergency lines.

Make sure to couple the proper glad hands.

Glad hands can be connected to any other glad hands.

Only one set of glad hands should be connected.

To reduce the risk of a surge in a tank vehicle, slow or stop while keeping a steady pressure on the brakes and do not release the brakes too early. Brake well in advance of a stop and increase your following distance.

Release the brakes too quickly.

Keep a steady pressure on the brakes.

Brake well in advance of a stop.

Release the brakes too quickly.

If a vehicle has anti-lock brakes on just one axle, the driver will still have more control during braking than they would without any anti-lock brakes.

Will provide increased control in braking.

Will not make a difference in braking.

Will provide increased control in braking.

Will likely cause the air brakes to malfunction.

If your trailer begins to drift while you are backing, you should correct the drift immediately by turning the top of the steering wheel in the direction of the drift.

Turn the top of the steering wheel in the direction of the drift.

Return the steering wheel to the 12 o’clock position.

Turn the top of the steering wheel in the direction of the drift.

Turn the top of the steering wheel in the direction opposite of the drift.

Combination vehicles are usually heavier and longer than single combination vehicles. Operating a combination vehicle requires a higher level of driving skill than operating a single commercial vehicle.

About the same level of skill as

The emergency air line controls the emergency brakes on a combination vehicle. A loss of air pressure in the emergency line will cause the emergency trailer brakes to activate.

The emergency brakes will activate.

The Anti-Lock Braking System will activate.

The service air line will activate.

The emergency brakes will activate.

Combination Vehicles Practice Test | Vermont 2024 #1

Train for FREE online with our Vermont 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 VT combination license in 2024, 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 | Vermont 2024 #1

1 . When coupling a trailer:

2 . To control surge when stopping, you should not:

3 . When glad hands are coupled, the seals should be pressed together at a ____ angle.

4 . Having anti-lock brakes on only one axle:

5 . If you are backing and the trailer begins to drift off-course, the driver should:

6 . Operating combination vehicles usually requires ____ operating single vehicles.

7 . If the emergency air line loses pressure:

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Combination Vehicles Practice Test | Vermont 2024 #1

1 . When coupling a trailer:

2 . To control surge when stopping, you should not:

3 . When glad hands are coupled, the seals should be pressed together at a ____ angle.

4 . Having anti-lock brakes on only one axle:

5 . If you are backing and the trailer begins to drift off-course, the driver should:

6 . Operating combination vehicles usually requires ­­­­­____ operating single vehicles.

7 . If the emergency air line loses pressure:

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6 . Operating combination vehicles usually requires ____ operating single vehicles.