Spring brakes come on automatically when air pressure drops to an unsafe psi level. Instead of waiting for the spring brakes to automatically activate, you should safely exit the road as soon as you notice the low pressure warning signal and bring your vehicle to a stop while you are still able to control the brakes.

When too much air pressure is lost.

When a control on the dashboard is activated.

When the tires have minimal tread depth.

Before driving, you should always verify that your service brakes are in good working order. Testing the brakes before a trip allows you to locate any problems before you need to brake while on the road.

Only be tested by a trained mechanic.

The stab braking method for emergency stops involves fully applying the brakes until they lock up. The brakes are then released until the wheels start rolling, then the process is repeated.

Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.

Apply the brakes about halfway, but keep the wheels rolling.

Fully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops.

Any vehicle with air brakes must be equipped with a low air pressure warning signal.

Is required on vehicles with air brakes.

Is not recommended on vehicles with air brakes.

Is required on vehicles with air brakes.

Is optional on vehicles with air brakes.

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 | Nevada 2026 #2 Page 3 of 4

Train for FREE online with our Nevada 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 NV Class A/Class B driver license in 2026, 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 | Nevada 2026 #2 Page 3 of 4

13 . Spring brakes come on:

14 . Service brakes should:

15 . To use the stab braking method in an emergency situation, you should:

16 . A low air pressure warning signal:

17 . If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?

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

See the exact questions that will be on the 2026 DMV exam.

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