SASKATCHEWAN AIR BRAKE PRACTICE TEST 03

The Saskatchewan Air Brake Test is an important requirement for any individual aspiring to operate a commercial vehicle in Saskatchewan, Canada.

Saskatchewan Air Brake Test 03

1 / 25

During bobtail operation, if your tractor is equipped with a bobtail proportioning relay valve, you should be aware that to achieve the same braking force as when pulling a trailer...?

The brake pedal will need to be depressed less far than usual

The brake pedal will need to be depressed further than usual

The brake pedal will operate exactly as if you had a trailer attached

Any of these depending on conditions

2 / 25

In a Type 30 air chamber, there is how much available stroke?

4 1/2 inches

2 1/2 inches

3 1/2 inches

1 1/2 inches

3 / 25

To adjust the brakes, you should turn the slack adjustment mechanism until the wheel stops rotating, then back it off how far?

Three whole turns

One to two whole turns

One half to one whole turn

One quarter to one half a turn

4 / 25

The relay emergency valve on the trailer reservoir serves what purpose?

Provides a quick release of the trailer brakes

All of these

Stops air in the reservoir from going back to the source of the supply

Applies the trailer brakes in an emergency

5 / 25

When connecting glad hands, you should start with the couplers at what angle to each other?

120°

90°

75°

45°

6 / 25

With automatic or self adjusting slack adjusters, they will normally remain properly adjusted with between two and four brake applications each day of what pressure?

100 psi

150 psi

50 psi

75 psi

7 / 25

The trailer hand control valve should not be used for what?

To correct a tractor skid

As a parking brake

To uncouple the trailer

To couple the trailer

8 / 25

When holding the foot brake fully down in a single unit, the maximum air loss after initial application must not exceed what in one minute?

5 psi

2 psi

3 psi

1 psi

9 / 25

The responsibility for checking brakes lies with...?

The vehicle owner

State inspectors

The vehicle driver

The vehicle mechanic

10 / 25

It is vital that brake adjustment be made when slack in a Type 30 brake chamber reaches what?

1 ½ inches

1 inch

½ inch

3/4 inch

11 / 25

Another name for the trailer supply valve is what?

The protection valve

The exhaust valve

The safety valve

The emergency valve

12 / 25

Under what circumstances can you use the trailer brakes to hold a parked vehicle that is left unattended?

If the driver is nearby

None

If the vehicle will not be left unattended for long

If the vehicle is parked on level ground

13 / 25

If the trailer brakes away, the relay emergency valve will do what?

Deliver air from the trailer reservoir directly to the brakes

Vent all air in the trailer reservoir

Any of these depending on circumstances

Close the line between the trailer reservoir and the brakes

14 / 25

Trailer brakes 'dynamiting' is caused by what?

Brake overheating

Rapid loss of air pressure

Driver error

Rapid increase of air pressure

15 / 25

Pushrod force will drop very rapidly after it exceeds...?

3 inches of stroke

2 inches of stroke

1 inch of stroke

4 inches of stroke

16 / 25

If automatic or self adjusting slack adjusters are badly out of adjustment, it may take how many brake applications to adjust them?

Up to 6

Up to 3

Up to 12

Up to 8

17 / 25

If your unit does not have dead-end couplers to protect the service and supply lines from contamination when working without a trailer, you should...?

Knot the lines together

Connect the lines to each other

Stick rags into each line

Any of these

18 / 25

When you have adjusted a manual slack adjuster, you should check that the slack adjuster and pushrod angle is no less than 90° with the brakes applied at...?

20 psi

30 psi

40 psi

10 psi

19 / 25

A vehicle with poorly adjusted brakes can have a stopping distance up to how much longer than normal?

35%

75%

50%

15%

20 / 25

The most efficient braking occurs when pushrod travel is...?

At its minimum

At its maximum

Between minimum and maximum

Any of these depending on conditions

21 / 25

When you see a sign telling you to stop and check brakes before a downgrade, which of these should you check?

Compressor pressure

Drum, bearing and tire temperatures

All of them

Pushrod travel

22 / 25

The service line port of the tractor protection valve will open at what air pressure?

45 psi

55 psi

25 psi

35 psi

23 / 25

If your vehicle has automatic or self adjusting slack adjusters, they should be checked...?

Every day

Every week

Every month

Every two days

24 / 25

If you close the trailer supply valve manually, what will happen?

The spring brakes will release

The primary circuit will close

All of these

The exhaust port will uncover

25 / 25

When the brakes are released, the angle formed by the slack adjuster arm and the pushrod should be greater than...?

75°

45°

120°

90°

Your score is

The test validates a driver’s ability to operate an air brake system effectively, which is crucial in maintaining road safety. Saskatchewan has a long history of stringent safety regulations and requirements for commercial vehicle operators, including the air brake test. With the province being a vital transportation hub in Canada, maintaining proper air brake protocol is critical in ensuring the safety of the vehicle operator and other motorists on the road. In Saskatchewan, commercial vehicle drivers must pass the air brake test every four years to ensure they continue to possess the necessary skills to operate heavy vehicles safely. The province has made significant efforts to provide training and testing facilities and information and resources about air brake systems to promote awareness and education among commercial vehicle operators. With air brake safety being paramount in Saskatchewan, the province is committed to maintaining its high standards of safety on the roads for years to come.

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.