BC AIR BRAKE PRACTICE TEST 03

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

Alcohol injector systems are designed to prevent...?

Freezing

All of these

Rusting

Excessive moisture

2 / 25

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

1976

2006

1986

1996

3 / 25

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

Apply 50%

Release fully

Apply fully

Release 75%

4 / 25

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

Circle

Octagon

Hexagon

Square

5 / 25

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

25%

10%

50%

75%

6 / 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...?

1/4 of an inch

1/16 of an inch

1/32 of an inch

1/8 of an inch

7 / 25

An application pressure gauge shows what?

The pressure in the compressor

The pressure in the supply tank

The pressure in the secondary tank

The pressure being delivered to the brakes

8 / 25

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

None of them

If off street

If parking temporarily

On level ground

9 / 25

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

With light pressure

With intermittent pressure

With firm continuous pressure

With as much pressure as possible

10 / 25

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

0.5 inches

2.5 inches

1.5 inches

3.5 inches

11 / 25

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

As often as if the system wasn't there

More often

Less often

Never

12 / 25

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

2 1/2 inches

1 3/4 inches

2 3/4 inches

1 1/4 inches

13 / 25

Drum brake linings must be a minimum of what thickness?

1/16 inch

1/4 inch

1/8 inch

1/2 inch

14 / 25

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

Any of these depending on road conditions

Lower than usual pedal pressure

Higher than usual pedal pressure

Normal pedal pressure

15 / 25

The vast majority of brake failures are caused by what?

Mechanical defects

Poor maintenance/checking

Poor driving

Road debris

16 / 25

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

Every 1000 miles

Every day

Every two days

Once a week

17 / 25

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

It is safe to use poorly adjusted brakes in normal operation

Poorly adjusted brakes will work normally if you increase pedal pressure

You may not notice poor adjustment in normal operation

You will immediately notice poor adjustment

18 / 25

When checking adjustment, you should wear...?

Eye protection

A hard hat

Stout clothing

All of these

19 / 25

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

The company mechanic

State inspection officials

The vehicle driver

The vehicle owner

20 / 25

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

Red button

Green button

Blue button

Yellow button

21 / 25

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

Higher on the left than the right

High on the right than the left

The same on each side

Any of these

22 / 25

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

Any of these

The foot valve

The hand valve

The trailer air supply valve

23 / 25

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

A heavyweight truck

A heavyweight emergency response vehicle

A bus

A crane towing vehicle

24 / 25

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

$1,500

$2,500

$2,000

$1,000

25 / 25

Automatic slack adjusters need to be checked...?

Only during servicing

More often than manual adjusters

As often as manual adjusters

Less often than manual adjusters

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
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.