It is important that all of a vehicle's equipment is in proper working condition before beginning a trip. If a trailer's spring brakes do not release when you push in the tractor air supply control, you should make sure the air line connections are properly attached and sealed.

Inspect the air line connections.

Activate the Anti-Lock Braking System.

Turn the engine off and on again.

Combination vehicles need more space on the road than other commercial vehicles because they are longer and need more space to turn and stop. It is especially important to properly manage space when you are operating a combination vehicle.

Need more space to turn and stop than other commercial motor vehicles.

Drive more slowly than other commercial motor vehicles.

Are heavier than other commercial motor vehicles.

Need more space to turn and stop than other commercial motor vehicles.

A tractor protection valve keeps air in a tractor or truck air brake system should the trailer break away or develop a bad leak. The valve will close automatically if the pressure drops to an unsafe level.

A valve that keeps air in the brake system should a bad leak occur

A valve that prevents the trailer from being accidentally released

A valve that prevents the vehicle from going too fast

Cargo weight should be evenly distributed within a trailer to reduce the risk of a rollover. Do not place too much weight on one side of a trailer.

Loaded with most weight on the driver’s side of the trailer.

Placed near the rear of the trailer.

Combination Vehicles Practice Test | Alaska 2024 #1 Page 2 of 3

Train for FREE online with our Alaska 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 AK 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 | Alaska 2024 #1 Page 2 of 3

8 . If you press the tractor air supply control and your trailer's spring brakes do not release, you should:

9 . The emergency air line supplies air to the:

10 . Place the trailer air supply control in its "emergency" position to test:

11 . When connecting a converter dolly to a second trailer, the trailer height should be ____ the center of the fifth wheel.

12 . Combination vehicles need extra space on the road because they:

13 . What is the tractor protection valve?

14 . To prevent a rollover, cargo should be:

See the exact questions that will be on the 2024 DMV exam.

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