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 you have an Anti-Lock Braking System (ABS) equipped on only the tractor, only the trailer, or only one axle, you will still have more control over the vehicle when braking than you would without ABS. You should brake normally.

Still allows you additional control when braking.

Slows the vehicle, but cannot stop it.

Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems. Watch the air pressure gauges to monitor the pressure levels.

Let the air compressor build up a minimum of 100 psi pressure in the primary and secondary systems before driving.

Let the vehicle warm up before driving to ensure that the fuel reaches the engine.

Let the air compressor build up a minimum of 100 psi pressure in the primary and secondary systems before driving.

Begin driving just after the vehicle starts.

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

Train for FREE online with our Louisiana 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 LA 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 | Louisiana 2024 #2 Page 3 of 4

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

14 . During an applied leakage test, the maximum leakage rate for a double combination vehicle is ____ in a minute.

15 . Having ABS on only one axle:

16 . When operating a vehicle with a dual air brake system, the driver should:

17 . Brakes can get out of adjustment quickly, especially:

18 . What can happen if the air pressure gets too low in an air brake system?

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