Air brake systems are an essential safety feature for heavy commercial vehicles such as trucks and buses. In Quebec, Canada, air brakes are regulated under the Quebec Highway Safety Code.


Quebec Air Brake Test 02

1 / 25

When unloaded, a vehicle can stop in 20 m from 20 km/h. If the weight of the vehicle is doubled, how far will it need to stop from 40 km/h with the same brake pressure?

2 / 25

Compared to hydraulic brakes, air brakes react...?

3 / 25

Which of these factors influence braking performance?

4 / 25

If the weight of your load doubles the weight of your vehicle, the stopping distance for the same brake pressure will be...?

5 / 25

When the brakes are on, the angle between the slack adjuster and the pushrod should be what?

6 / 25

The emergency brakes can be activated by doing what?

7 / 25

Brake fade is caused by what?

8 / 25

In a manual transmission vehicle, the brakes should be checked with the transmission in what gear?

9 / 25

You're travelling at 90 km an hour and your brake system has a lag of half a second. How far will your vehicle travel in the time between you pressing the brake pedal and the brakes engaging?

10 / 25

Brakes need adjusting if the pushrod travel is more than what?

11 / 25

When you have adjusted the brake linings so that they hug the drum snugly, you should back the adjusting bolt off by...?

12 / 25

When you double your speed, the amount of braking power required for the same stopping distance as your initial speed is...?

13 / 25

If your brakes have automatic slack adjusters, they have to be checked...?

14 / 25

When adjusting brakes, the vehicle should...?

15 / 25

Which of these lessens the effect of brake lag?

16 / 25

An air brake system can go from a pressure loss to emergency braking within...?

17 / 25

The only certain method of checking brake adjustment is what?

18 / 25

Retarders and engine brakes will not work until...?

19 / 25

When using anti-lock brakes, you have to get used to...?

20 / 25

The emergency brake will come on automatically when the air pressure in the service brake system drops below...?

21 / 25

When checking brake adjustment, the air pressure gauge must read over what?

22 / 25

Supplemental brakes always work on which wheels?

23 / 25

Hydrodynamic retarders work using what?

24 / 25

Which of these can cause a drop in air pressure?

25 / 25

When checking brake adjustments, you should check...?

Your score is


To ensure that drivers operating commercial vehicles equipped with air brakes are correctly trained and qualified, they must pass an Air Brake Endorsement Test. This exam covers various topics related to air brakes, including the principles, components, and operation of air brake systems. Drivers must comprehensively understand air brake functioning and maintenance to ensure they can respond appropriately in emergencies. In Quebec, air brakes are subject to regular inspections, and violations of air brake regulations can result in significant fines and penalties. Overall, air brake safety measures in Quebec are vital for ensuring the safety of all those on the road. has prepared this Air Brake practice test to assist drivers in understanding air brake systems. This practice test and practical instruction will help drivers operate air brake-equipped vehicles before and after obtaining their Quebec air brake F endorsement. To operate vehicles equipped with air brakes on a highway (other than a vehicle defined as a construction vehicle), you must have a Quebec driver’s license with an air brake F endorsement.

To successfully prepare, consider utilizing these exams and the official Quebec “driving a heavy vehicle” manual (chapter 4) 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.