Blocking and bracing are used to prevent cargo from shifting in transit. Blocking is used in the front, in the back, and on the sides of a piece of cargo to prevent movement. Bracing prevents movement by reaching from the upper portion of a piece of cargo to the floor and sides of the cargo compartment.

Prevent items from moving in a trailer.

Make items stand taller in a trailer.

Prevent items from moving in a trailer.

Make it easier to unload items from a trailer.

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.

If the low pressure warning signal activates while you are driving, it is important that you safely exit the roadway as soon as possible and park your vehicle. If the air pressure gets too low, the brakes will no longer work well enough for you to stop safely.

Exit the roadway as soon as safely possible

It is essential that your low pressure warning light functions properly. After allowing the system to charge, you can test the warning signal by rapidly applying and releasing the brake pedal. This will release air from the braking system and the warning signal should come on when pressure drops to a dangerous level.

Rapidly pressing and releasing the brake pedal.

Turning on the engine and applying the trailer hand brake.

Rapidly pressing and releasing the brake pedal.

Removing wheel chocks and disengaging the parking brake.

It is important to observe other drivers' actions and identify clues that a person could be driving impaired. Drivers who have had too much to drink, are sleepy, are on drugs, or are ill can present hazards to other drivers. One sign that a driver may be impaired is that they stop in inappropriate places, such as at green traffic lights.

A person who does not know the rules of the road.

In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.

When tank pressure falls below 60 psi.

When tank pressure falls below 120 psi.

When tank pressure falls below 60 psi.

When tank pressure falls below 10 psi.

Class B Driving Test | Maine 2025 #2 Page 6 of 7

Train for FREE online with our Maine class B license 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 ME CDL class B permit 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 CDL class B requirements may vary from state to state.

Number of Question 50

Passing Score 40

Number of Tests 20

Class B Driving Test | Maine 2025 #2 Page 6 of 7

36 . Bracing is used to:

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

38 . You should ____ if the low pressure warning signal activates while you are driving.

39 . You should test the low pressure warning signal by:

40 . A driver who stops at a green light could be:

41 . When the spring brakes are on, you should never:

42 . A low air pressure warning signal should activate:

See the exact questions that will be on the 2025 DMV exam.

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