Air brakes are an integral part of commercial vehicles in Alberta, Canada. In order to operate a commercial vehicle equipped with air brakes, a driver must possess an Air Brake Endorsement on their driver’s license.


Alberta Air Brake Test 04

1 / 25

Auxiliary retarders are most efficient at...?

2 / 25

Which of these statements is most accurate concerning brake management systems?

3 / 25

If the trailer service line fails, the driver should stop in stages, releasing the brake to allow the air pressure to recover when it falls to...?

4 / 25

When inspecting and adjusting brakes, a driver should wear...?

5 / 25

You must stop at a pre-hill brake inspection sign...?

6 / 25

A brake lining must be replaced when it has worn down to what level?

7 / 25

During a driving shift, which of these should you check?

8 / 25

Brake chamber pushrod travel should be checked at least...?

9 / 25

When driving a tractor without a trailer (“bobtailing”), how will the vehicle react to braking harder in slippery conditions compared to driving with a trailer?

10 / 25

Which of these is the most common cause of brake failure?

11 / 25

For provincial carriers, a commercial vehicle is one with a registered weight of...?

12 / 25

When an S-cam brake is correctly adjusted, the brake lining will contact the brake drum before the brake chamber has gone through what portion of its maximum stroke?

13 / 25

In the event of a trailer supply line failure, the spring park brakes will apply immediately and the ABS will...?

14 / 25

Drum wear can be compensated for using what?

15 / 25

When inspecting and adjusting air brakes, the driver should check that the air pressure is at or greater than what?

16 / 25

What is the maximum distance the push rod can move out of the brake chamber in a Type 30 chamber?

17 / 25

Foundation brakes are found where?

18 / 25

On a steep hill warning sign, which of these would be the steepest grade?

19 / 25

Your truck will be equipped with automatic slack adjusters if it was manufactured after which year?

20 / 25

When descending slowly down a hill, what should you do to let other drivers know your intentions?

21 / 25

In the event of a failure in the park/emergency circuit, at what pressure will the spring park brakes start dragging?

22 / 25

When driving with tire chains, you should...?

23 / 25

In an emergency caused by a trailer tank failure, emergency braking can be effected using what?

24 / 25

Brakes will function best if the trailer load is distributed...?

25 / 25

When inspecting the supply circuit, you should confirm that the governor cut-in pressure is at least how much less than the cut-out pressure?

Your score is


To obtain this endorsement, drivers must pass a written knowledge test and a practical hands-on test that demonstrates their ability to properly inspect, maintain, and safely operate the vehicle’s air brake system. The Alberta Air Brake Program was implemented to ensure that commercial drivers on the road have the necessary skills and knowledge to effectively control their vehicle’s speed and maintain the safety of themselves and other road users. This program has significantly reduced the number of accidents caused by brake failure, ultimately making Alberta’s roads safer for everyone. has prepared this Air Brake practice test to assist drivers in understanding air brake systems. This practice test and practical instruction will assist drivers in operating air brake-equipped vehicles before and after obtaining their Alberta air brake endorsement.

To successfully prepare, consider utilizing these exams and the official Alberta “Air Brake Manual – A Guide for Students” to your advantage. The more knowledge you can attain, the better it will be for you once you decide to return to the license office to take the air brake license written knowledge test.