If you use the parking brakes when the weather is very wet and the temperature is below freezing, the brakes may become frozen, preventing the vehicle from moving.

The brakes may freeze so the vehicle cannot move.

The brakes may suddenly release by themselves.

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

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.

Brakes are designed to take a lot of heat, but drivers should not rely solely on the brakes to slow their vehicle. Brakes may fade and lose their ability to slow down the vehicle if they become too hot, so drivers should also rely on the engine braking effect.

The brakes may squeak more than usual.

The brakes will brake unevenly.

Air Brakes Endorsement Test | Minnesota 2024 #2 Page 3 of 4

Train for FREE online with our Minnesota CDL air brake 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 MN Class A/Class B driver 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 the requirements for CDL may vary from state to state.

Number of Question 25

Passing Score 20

Number of Tests 20

Air Brakes Endorsement Test | Minnesota 2024 #2 Page 3 of 4

13 . What can happen if a parking brake is used in very wet weather when temperatures are below freezing?

14 . ABS usually shortens a vehicle's stopping distance.

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

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

17 . Making a quick lane change while pulling multiple trailers is usually safer than making a quick lane change while pulling only one trailer.

18 . Using the brakes creates heat. If too much heat is produced:

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

Wait, before you go

Air Brakes Endorsement Test | Minnesota 2024 #2 Page 3 of 4

13 . What can happen if a parking brake is used in very wet weather when temperatures are below freezing?

14 . ABS usually shortens a vehicle's stopping distance.

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

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

17 . Making a quick lane change while pulling multiple trailers is usually safer than making a quick lane change while pulling only one trailer.

18 . Using the brakes creates heat. If too much heat is produced:

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

Wait, before you go

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