BC AIR BRAKE PRACTICE TEST 02

Air brakes are an essential safety feature in commercial vehicles, especially those carrying heavy loads. In British Columbia, Canada, air brakes are required on vehicles such as semi-trailers, buses, and other vehicles that weigh over 11,794 kilograms.

BC Air Brake Test 02

1 / 25

When trailer brakes 'dynamite' they will remain applied for how long?

15 minutes

5 minutes

10 minutes

20 minutes

2 / 25

The trailer air supply valve must close if the tractor pressure drops below...?

15 psi

25 psi

20 psi

10 psi

3 / 25

In colour-coded systems, which colour is used to indicate the control line?

Green

Yellow

Red

Blue

4 / 25

Before manually releasing spring brakes, you should do what?

Chock the wheels

Turn on the engine

Attach the vehicle to a tow truck

Pressurise the air system

5 / 25

What force does the coil spring in spring parking brake chambers exert?

1000 - 1500 lbs

1500 - 2000 lbs

2000 - 2500 lbs

2500 - 3000 lbs

6 / 25

The parking brake control valve on the dashboard is usually which colour?

Red

Yellow

Blue

Green

7 / 25

Which of these is an alternative name for the control line?

Primary line

Service line

Emergency line

Supply line

8 / 25

The chief difference between a trailer air brake system compared to the tractor is that the trailer will not have...?

Control valves

A compressor

Foundation brakes

Air reservoirs

9 / 25

Spring parking brakes are mounted where on a tractor?

On the rear axles

Any of these

On the steering axles

On the rear and steering axles

10 / 25

In dual air brake systems using blended air, the parking brake will take air from...?

Directly from the compressor

The tank with the lowest pressure

The tank with the highest pressure

Each tank alternately

11 / 25

Compounding brakes means what?

Any of these

Parking brakes and service brakes applying together

Parking brakes and service brakes applying alternately

Secondary and primary systems applying together

12 / 25

Spring parking brakes are kept off by...?

Drive force

Spring pressure

Air pressure

Any of these

13 / 25

On a dual airbrake system, if the primary system fails which of these applies?

Stopping distance will remain the same

Stopping distance will increase

Stopping distance will decrease

Stopping will become impossible

14 / 25

Spring parking brakes will fully apply if air pressure drops to what level?

10 - 20 psi

20 - 45 psi

5 - 10 psi

45 - 60 psi

15 / 25

An alternative name for the supply line is what?

Service line

Emergency line

Primary line

Secondary line

16 / 25

How are safety actuator parking brakes different from normal brake systems?

The brake chamber operates hydraulically

The brake chamber has two springs

The brake chamber has two diaphragms

The parking brakes operate automatically

17 / 25

Safety actuator parking brakes will not release if more than how much air has been lost from the parking reservoir?

6 psi

10 psi

8 psi

4 psi

18 / 25

The couplers between tractor and trailer are known as what?

Third hands

Glad hands

No hands

Extra hands

19 / 25

Releasing a spring parking brake manually is known as what?

Boxing

Caging

Forcing

Unlocking

20 / 25

Which of these is a sign that you may have reversed the supply line and service line connections?

The trailer service brakes are locked

All of these

The foot valve feels spongy

The spring parking brakes won’t release

21 / 25

If your system is colour-coded, the supply line will be what colour?

Black

White

Blue

Red

22 / 25

Spring parking brakes will come on when applied by the driver and...?

If air pressure drops

If air pressure rises

When going downhill

If the vehicle starts to skid

23 / 25

When not in use, glad hand couplers should be blocked with dead-end couplers or if these are not available they should be...?

Connected to each other

Left venting air

Secured upright

Blocked with rags

24 / 25

Using foundation brakes to hold the vehicle when parked is...?

Illegal

Unreliable

All of these

Dangerous

25 / 25

Which of these balances pressure between the service brakes and the spring parking brakes?

Service brake balancer

Service brake modulator

Spring brake modulator

Spring balancer

Your score is

The province mandates that all drivers of vehicles equipped with air brakes must possess an air brake endorsement on their license. This endorsement requires drivers to take a written and practical examination to demonstrate their knowledge and skills. The practical exam includes tasks such as conducting pre-trip inspections, performing brake tests, and identifying and correcting brake system defects. This strict regulation ensures that only trained professionals operate vehicles equipped with air brakes, minimizing the risk of accidents and injuries. In addition, commercial vehicle operators in British Columbia are subject to regular inspection and maintenance requirements to ensure their vehicles’ safe operation further. Overall, the province’s focus on promoting air brake safety helps to protect both drivers and the public on the roads.

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
license.

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.