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

What happens during bobtail proportioning relay valve operation?

2 / 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...

3 / 30

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

4 / 30

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

5 / 30

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

6 / 30

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

7 / 30

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

8 / 30

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

9 / 30

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

10 / 30

Where is the relay emergency valve mounted?

11 / 30

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

12 / 30

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

13 / 30

Rupture of the compressor discharge line results in what?

14 / 30

How many functions does the relay emergency valve serve?

15 / 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?

16 / 30

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

17 / 30

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

18 / 30

What is the main purpose of the trailer supply valve?

19 / 30

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

20 / 30

What happens if the service line is ruptured or disconnected?

21 / 30

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

22 / 30

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

23 / 30

A trailer breakaway would result in...

24 / 30

What is a bobtail proportioning relay valve?

25 / 30

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

26 / 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?

27 / 30

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

28 / 30

How do you control the trailer brakes independently?

29 / 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...

30 / 30

What is referred to as the relay emergency valve?

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