In general, you should always use the parking brake when parking your vehicle. However, you should not apply the parking brake if your brakes are very hot or if your brakes are wet and temperatures are below freezing.

The parking brake should be used.

The parking brake only needs to be used if the vehicle is parked on a slope.

The parking brake should not be used, as it can damage the tires.

When parking on a level surface, you should use wheel chocks. If the vehicle is not equipped with spring brakes, this is essential to prevent the trailer from moving.

Use wheel chocks to prevent your vehicle from moving.

Use wheel chocks, but only if you have applied the parking brake.

Some older vehicles have front brake limiting valves with "normal" and "slippery" settings. Setting a brake limiting valve to "slippery" reduces the vehicle's stopping power, so a driver should make sure the valve is in its "normal" position. Front wheel braking has proven to be effective in all driving conditions.

Set the control to the off position.

Set the control to the neutral position.

In an air brake system, there are three different braking systems: a service brake system, a parking brake system, and an emergency brake system. The emergency brake system uses parts of both the parking and service brake systems.

Parts of the parking and service brake systems

Only parts of the parking brake system

Only parts of the service brake system

Parts of the parking and service brake systems

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.

Air Brakes Endorsement Test | Michigan 2025 #1 Page 3 of 4

Train for FREE online with our Michigan 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 MI Class A/Class B driver 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 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 | Michigan 2025 #1 Page 3 of 4

13 . When leaving your vehicle unattended:

14 . When parked on a flat surface, you should:

15 . To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:

16 . ____ make up the emergency brake system.

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

18 . If air pressure drops to a level between ____, a visual low pressure warning signal should have already activated.

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