SASKATCHEWAN AIR BRAKE PRACTICE TEST 02

Air brakes are an essential part of ensuring road safety in Saskatchewan, Canada. These brakes are often used by larger vehicles such as trucks and buses to slow down or stop the vehicle during travel.

Saskatchewan Air Brake Test 02

1 / 25

The purpose of dual circuit air systems is what?

To increase braking power

To prevent wheel lock-up

To increase compressor efficiency

To prevent total brake failure

2 / 25

Under normal operating conditions the secondary reservoir operates...?

The compressor

The rear service brakes

The front service brakes

The air dryer

3 / 25

Using wind off bolts to compress the power spring in spring brakes is known as what?

Caging the brakes

Bolting the brakes

Locking the brakes

Feathering the brakes

4 / 25

If one circuit on a dual circuit system fails, the other circuit will do what?

Switch to operating both systems

Continue to operate independently

Fail also

Switch to operating the failed system

5 / 25

A properly adjusted governor will cut in at what pressure below the cut out pressure?

10 - 15 psi

15 - 20 psi

20 - 25 psi

30 - 35 psi

6 / 25

The double check valve that supplies the trailer supply valve takes its air from where?

The secondary circuit

The primary circuit

The lowest pressure circuit

The highest pressure circuit

7 / 25

The tractor protection system is designed to do what?

Stop air bleeding back from the trailer to the tractor

Stop the trailer running into the tractor

Stop the tractor losing air

Stop the tractor brakes locking

8 / 25

The air pressure gauge for an air brake system will be found where?

On the dashboard

On the supply reservoir

By the air lines

On the compressor

9 / 25

The tractor protection system must be set to activate before system pressure drops below...?

40 psi

10 psi

30 psi

20 psi

10 / 25

Spring brakes will begin to drag at around what psi?

11 / 25

A low pressure warning switch must be activated when the air pressure drops below what level?

50 psi

70 psi

40 psi

60 psi

12 / 25

On a dual circuit air brake system, the brakes will be applied by...?

A pedal and a hand valve

A single pedal

Two hand valves

Two pedals

13 / 25

If a vehicle has a front wheel limiting valve, when activated it will reduce application pressure on the steering axle brakes by how much?

100%

50%

25%

75%

14 / 25

The control button for the trailer supply valve is usually...?

Green, hexagonal

Red, circular

Red, octagonal

Blue, square

15 / 25

It's important that spring brakes are fully applied before...?

The air supply is below 50%

The parking brake control valve is deployed

The air supply is fully depleted

The vehicle comes to a complete stop

16 / 25

Which of these describes the way the spring brake works?

Applied by spring pressure, released by spring pressure

Applied by air pressure, released by air pressure

Applied by spring pressure, released by air pressure

Applied by air pressure, released by spring pressure

17 / 25

The ratio valve will be found where?

In the front axle delivery line

In the rear axle delivery line

Between the compressor and supply reservoir

In the trailer delivery line

18 / 25

A relay valve is installed to combat what?

High pressure

Overheating

Air loss

Brake lag

19 / 25

Why are spring brake chambers preferred as parking brakes?

All of these reasons

They are more effective than air brakes

They are easier to maintain than air brakes

They can't be affected by loss of air pressure

20 / 25

Air dryer systems are useful in preventing what?

Air line tangles

Air line freeze ups

Air line fractures

Air line overheating

21 / 25

If your vehicle has an air dryer system, the reservoirs need to be drained...?

More often than if it didn't

Less often than if it didn't

Any of these depending on operational conditions

With the same regularity as if it didn't

22 / 25

When blended air is used to supply the control valve in a dual circuit system, it is taken from the primary and secondary circuits through...?

The foot valve

A two-way check valve

A safety valve

A relay valve

23 / 25

When does the stop light switch come on?

Whenever the vehicle is stationary

Whenever the engine is turned off

Whenever the brake is applied

Whenever the brake is released

24 / 25

If the low pressure warning is activated, what should the driver do?

Proceed at lower speed

Stop and investigate immediately

Report it to mechanics at the end of shift

Investigate at the next scheduled stop

25 / 25

What does an anti-compound line do?

Any of these depending on brake application

Immediately releases the service brakes if spring brakes are applied

Immediately releases the spring brakes if the service brakes are applied

Balances the pressure between service brakes and the spring brakes

Your score is

In Saskatchewan, all drivers operating air-braked vehicles must have an air brake endorsement on their driver’s license. This endorsement requires the driver to pass a written knowledge and practical skills test to ensure they understand how to operate and maintain an air brake system. Furthermore, all commercial vehicles weighing 11,794 kg must have an air brake system installed by law. This is to help reduce accidents caused by brake failure due to driver error or mechanical issues. Regular air brake testing and maintenance ensure drivers can operate their vehicles safely and prevent catastrophic road accidents. As such, the Saskatchewan air brake test and endorsement system aim to promote safer roadways for all road users in the province.

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 Saskatchewan air brake endorsement A.

With information ranging from the essential operation of air brake systems to the use of both single and combination vehicles equipped with air brakes, this practice test includes everything you need to know about driving with air brakes safely and responsibly.

To successfully prepare, consider utilizing these exams and the official Saskatchewan “Air Brake Manual” 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.