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

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

Green

Red

Blue

Yellow

2 / 25

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

5 minutes

15 minutes

10 minutes

20 minutes

3 / 25

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

The spring parking brakes won’t release

The foot valve feels spongy

The trailer service brakes are locked

All of these

4 / 25

Spring parking brakes are kept off by...?

Drive force

Spring pressure

Air pressure

Any of these

5 / 25

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

Yellow

Green

Red

Blue

6 / 25

Compounding brakes means what?

Parking brakes and service brakes applying together

Any of these

Parking brakes and service brakes applying alternately

Secondary and primary systems applying together

7 / 25

An alternative name for the supply line is what?

Service line

Primary line

Emergency line

Secondary line

8 / 25

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

Unreliable

Illegal

Dangerous

All of these

9 / 25

Before manually releasing spring brakes, you should do what?

Pressurise the air system

Chock the wheels

Attach the vehicle to a tow truck

Turn on the engine

10 / 25

Releasing a spring parking brake manually is known as what?

Boxing

Forcing

Caging

Unlocking

11 / 25

The couplers between tractor and trailer are known as what?

Extra hands

No hands

Glad hands

Third hands

12 / 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

Air reservoirs

Foundation brakes

13 / 25

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

The brake chamber has two diaphragms

The brake chamber operates hydraulically

The brake chamber has two springs

The parking brakes operate automatically

14 / 25

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

If air pressure drops

When going downhill

If air pressure rises

If the vehicle starts to skid

15 / 25

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

5 - 10 psi

45 - 60 psi

10 - 20 psi

20 - 45 psi

16 / 25

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

The tank with the lowest pressure

Directly from the compressor

Each tank alternately

The tank with the highest pressure

17 / 25

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

10 psi

8 psi

6 psi

4 psi

18 / 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

Blocked with rags

Secured upright

Left venting air

19 / 25

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

Service line

Primary line

Emergency line

Supply line

20 / 25

Spring parking brakes are mounted where on a tractor?

Any of these

On the rear axles

On the steering axles

On the rear and steering axles

21 / 25

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

25 psi

15 psi

20 psi

10 psi

22 / 25

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

Spring brake modulator

Spring balancer

Service brake modulator

Service brake balancer

23 / 25

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

Black

Blue

White

Red

24 / 25

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

Stopping will become impossible

Stopping distance will increase

Stopping distance will decrease

Stopping distance will remain the same

25 / 25

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

2500 - 3000 lbs

1500 - 2000 lbs

2000 - 2500 lbs

1000 - 1500 lbs

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.