Saskatchewan Air Brake Test 06

Practicing the online test will develop your understanding of important safety protocols and rules that need to be followed while driving large commercial vehicles. Passing your official exam is an achievement that can open up several lucrative opportunities for your career. So, take advantage of this free online test and practice regularly to master the skills needed to become a successful commercial vehicle operator.


Saskatchewan Air Brake Test 06

1 / 30

Which statement is false? The trailer spring-brake valve is responsible for the following important functions...

2 / 30

What is the main purpose of the trailer supply valve?

3 / 30

Depending on the type of tractor protection system used, air loss from the tractor will stop immediately or it will bleed down to a minimum of...

4 / 30

Drivers can check the operation of the relay emergency valve by doing what?

5 / 30

The trailer brakes will remain applied until either the pressure in the trailer reservoir is drained off or...

6 / 30

Trailer-brake application pressure is the same as control pressure, which is the pressure of application air by the foot valve, causing brake lag to be...

7 / 30

What happens if the foot valve and the hand valve are operated at the same time?

8 / 30

Where is the relay emergency valve mounted?

9 / 30

Sudden loss of air pressure in the supply line triggers what?

10 / 30

Which of the following are not components of the spring-brake trailer air system?

11 / 30

Rupture of the service line will result in the escape of air pressure if...

12 / 30

The relay emergency valve must be of what type, so no air is lost from the trailer during a supply-line rupture?

13 / 30

Air flow during a brake application made with the foot valve has applied the tractor and trailer brakes...

14 / 30

What is referred to as the relay emergency valve?

15 / 30

What is a bobtail proportioning relay valve?

16 / 30

What does disconnecting the supply line between the tractor and trailer with the supply valve in the open position do for the driver?

17 / 30

What happens if the service line is ruptured or disconnected?

18 / 30

Is there sufficient reserve air pressure in the primary and secondary reservoirs for a limited number of brake applications to stop the vehicle before the parking brakes are activated?

19 / 30

Rupture of the compressor discharge line results in what?

20 / 30

What happens during bobtail proportioning relay valve operation?

21 / 30

A trailer breakaway would result in...

22 / 30

Control pressure causes the relay emergency valve to direct reservoir air from...

23 / 30

During a supply-line rupture, operation of the tractor brakes will not be affected if...

24 / 30

Can trailer brakes be used to hold a parked vehicle that is left unattended?

25 / 30

How do you control the trailer brakes independently?

26 / 30

How many functions does the relay emergency valve serve?

27 / 30

Can you use the hand valve to apply the trailer brakes?

28 / 30

During a loss of supply reservoir air, what has prevented primary and secondary reservoir air from escaping back to the supply reservoir and the ruptured line?

29 / 30

Loss of pressure in the supply line also causes the trailer-supply valve to do what?

30 / 30

During emergency applications, the tractor brakes are operable, without air loss, because...

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