In British Columbia, Canada, the operation of vehicles with air brakes is subject to strict regulations to ensure the safety of road users.


BC Air Brake Test 03

1 / 25

An application pressure gauge shows what?

2 / 25

If your vehicle is equipped with an air dryer system, you need to drain the reservoirs...?

3 / 25

Operating a vehicle with an excessive brake chamber pushrod stroke can result in a fine of up to...?

4 / 25

By law, you must check the manual and automatic slack adjusters...?

5 / 25

On which of these vehicles are you most likely to find air over hydraulic brakes?

6 / 25

When the trailer air supply valve is closed, the trailer brakes must...?

7 / 25

If your vehicle has wedge brakes, you will know the automatic adjusters have failed if when the brakes are applied and released the linings move more than...?

8 / 25

The trailer air supply knob on the dashboard will usually be what shape?

9 / 25

When you want to apply the trailer brakes without applying the tractor brakes, what should you use?

10 / 25

When checking adjustment, you should wear...?

11 / 25

When using a bobtail proportioning system braking will require...?

12 / 25

If a vehicle is equipped with a tractor parking brake valve, it will usually be what colour?

13 / 25

Drum brake linings must be a minimum of what thickness?

14 / 25

When stopping on slippery surfaces with an ABS equipped truck, how should you apply the brake pedal?

15 / 25

Automatic slack adjusters need to be checked...?

16 / 25

Which of these people is ultimately responsible for making sure air brakes are working properly?

17 / 25

Alcohol injector systems are designed to prevent...?

18 / 25

A tractor with a bobtail proportioning system will reduce the braking pressure to the drive axle brakes by up to...?

19 / 25

The vast majority of brake failures are caused by what?

20 / 25

Which of these statements is most accurate regarding poorly adjusted brakes?

21 / 25

Under what circumstances can you use the hand valve for parking?

22 / 25

With brakes on the same axle, pushrod travel should be...?

23 / 25

In a Type 30 brake chamber, the maximum available stroke is...?

24 / 25

Brakes need adjustment if the applied stroke is more than...?

25 / 25

Your vehicle will have automatic slack adjusters if it was built later than...?

Your score is


Drivers who intend to operate such vehicles must undergo a comprehensive air brake endorsement training program that includes theoretical and practical components. The theory portion covers air brake systems, components, control systems, and ins and outs of coupling and uncoupling trailers. In addition, drivers must pass a written test and complete practical training that includes inspecting air brake systems, testing the low air warning system, and conducting a brake performance test. Failure to comply with these regulations can result in severe penalties and even a driver’s license suspension. Compliance with these regulations ensures that the vehicles equipped with air brake systems are maintained and operated safely, reducing the risk of accidents and ensuring the safety of all road users in British Columbia.

Drivingtest.ca 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 BC air brake endorsement. To operate vehicles equipped with air brakes on a highway (other than a vehicle defined as a construction vehicle), you must have a B.C. driver’s license with an air brake endorsement (code 15). Endorsement code 15 is shown in the “restrictions” section of a driver’s

To successfully prepare, consider utilizing these exams and the official BC “driving commercial vehicles -a Guide for professional drivers” 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.