Air brake systems are an essential safety feature on large vehicles in Nova Scotia, Canada. The province’s air brake regulations require all drivers of commercial vehicles equipped with air brakes to pass a written knowledge test and a practical air brake test.


Air Brake Test 03

1 / 30

Choose the correct order of steps for the compressor and warning devices check as part of a single unit pre-trip air brake inspection.

2 / 30

For a combination unit, during what part of the pre-trip check do you ensure that the air brake glad hands and trailer electrical cord is connected properly?

3 / 30

If a brake is out of adjustment and there is not enough reserve stroke of the push rod travel to compensate for drum expansion, this will cause ________.

4 / 30

When checking for reservoir air leakage for a single unit, after making a full brake application with the foot valve and holding it the air pressure gauge reading should not drop more than __ psi per minute.

5 / 30

During the '_______' stage, the compressor is able to cool.

6 / 30

When conducting a compressor and warning device check for a single unit, warning device(s) must operate to __ psi or higher.

7 / 30

What would be the psi if 50 pounds were being forced onto 2 square inches?

8 / 30

In an air-boost hydraulic brake system what is used to intensify the hydraulic pressure generated by the master cylinder?

9 / 30

After a long mountain drive, what is the best way to park if your vehicle has spring parking brakes?

10 / 30

What protects the wet reservoir from becoming over pressurized?

11 / 30

When inspecting brake adjustment on a single unit, the slack (push rod travel) should be within how many inches within manufacturer's specifications?

12 / 30

What should be done to parked trailers without spring parking brakes to prevent a possible runaway?

13 / 30

At the first stop after adjusting the wedge type brakes, check each brake drum or rotor for temperature. An extra _______ brake drum indicates that you have _____ adjusted it.

14 / 30

One kilogram is equal to how many pounds?

15 / 30

How often do automatic slack adjusters need to?

16 / 30

Choose the correct order of steps to secure a vehicle as part of a single unit pre-trip air brake inspection.

17 / 30

What is the upward motion of the piston that compresses the air in the cylinder known as?

18 / 30

In a dual air brake system, if one circuit develops a leak, the other circuit would be protected from air pressure loss by the __________________.

19 / 30

Discounting self-lubricated compressors, how are compressors usually lubricated?

20 / 30

If an air-actuated hydraulic brake system was to lose its air supply, the vehicle would have no service brakes. Only the __________ would be operating.

21 / 30

On a combination unit, the governor should place the compressor in the unloading stage between ___ psi minimum and ___ psi maximum.

22 / 30

One metre is equal to how many yards?

23 / 30

Which of the following vehicles would require checking the hydraulic fluid level in the reservoir as part of the pre-trip check?

24 / 30

For a combination unit, during what part of the pre-trip check do you ensure that the reservoir air pressure builds from 50 to 90 psi within three minutes?

25 / 30

What does the acronym psi stand for?

26 / 30

Which of the following does not usually have a pressure gauge?

27 / 30

Can the trailer brake hand valve be used for parking?

28 / 30

One gram is equal to how many ounces?

29 / 30

What is used to mark where the push rod enters the brake chamber when determining whether an S-cam brake with manual slack adjusters requires adjustment?

30 / 30

An air dryer may be installed between the ________ and the ________ to help remove moisture from the compressed air.

Your score is


The practical test measures the driver’s ability to perform pre-trip inspections, proper pressure tests, and operate the air brake system on the road. Additionally, drivers with air brake endorsements must take refresher courses and retest every five years to ensure their safety and that of other road users. Nova Scotia’s air brake system regulations help to ensure that vehicles on the road are correctly maintained and that drivers are adequately trained to operate these critical safety features.

Before learning to drive a Class 1, Class 2, Class 3, or Class 4 vehicle, you must get authorized instruction in the class of vehicle you want to be licensed in. For each section of these practice tests, we have multiple practice tests. Requirements for Air Brake Endorsement are 1) Must complete an Air Brake Written Test 2) Must complete an Air Brake Practical Test.

To successfully prepare, consider utilizing these exams and the official Nova Scotia Air Brake Manual to your advantage. The more knowledge you can attain, the better it will be for you once you return to the SNB office to take the air brake license written knowledge test.