Alberta Air Brake Test 04

Studying the Alberta Driver’s Guide and the Air Brake Manual is recommended. Mastering the concepts of air brakes, such as the main components, signs of brake failure, and maintenance schedule, is crucial. Additionally, simulation tests are incredibly helpful in building confidence and improving test-taking skills. Armed with a solid foundation of knowledge and the practice and experience gained from the simulation tests, you can approach the official exam with a high degree of confidence, knowing that you are well-prepared to ace it.

1 / 30

What does the service/control line do?

Carries the control system from the foot valve to the trailer service circuit relays

Blocks the control system

None of the above

Disconnects the trailer service relays

2 / 30

What is the problem with air pressure park brakes?

None of the above

They are not as tight as spring brakes

Not enough pressure to park

Air pressure drains out of the system, the park brakes will release

3 / 30

Having a very powerful emergency brake, twice as powerful as spring park brakes, what is the risk?

Brake lockup in an emergency application

Brake failure on the trailers

Having a load shift in an emergency

Brake failure on the tractor

4 / 30

During a secondary service circuit failure, which brakes will not apply?

The steering axle brakes

The trailer brakes

The drive axel brakes

All of the brakes

5 / 30

Foundation brakes are the mechanical component at the axle ends. If they are not working properly, what happens?

The driver will need to use the emergency brakes to stop the vehicle

The driver should apply the park brakes

The driver should find a place to come to a safe stop

The air brake system will not be able to stop the vehicle

6 / 30

If there is any sign that the trailer service brakes are not working and the vehicle must be stopped quickly, what should the driver do?

Pump the pedal

Downshift

Pull the trailer supply valve

Apply the park brakes

7 / 30

During a roadside inspection, what happens if the trailer air supply valve does not work properly?

The employer receives a ticket

The vehicle must return to the yard

The vehicle will be placed out-of-service

The driver receives a ticket

8 / 30

Rather than using mechanical spring park brakes to hold the foundation brakes on for the emergency brake, what can be done instead?

Nothing can be done

Increase the diameter of the air hoses

Increase the size of the brake pads

Air from the service tank is supplied to the service chambers

9 / 30

What will enforcement officers during Level 1 Commercial Vehicle Safety Alliance (CVSA) inspection will check?

The couplers

The psi of the secondary tank

Both parts of the tractor's protection system

The psi of the primary tank

10 / 30

If the trailer service brakes are not working and the vehicle must be stopped quickly, what should the driver do?

Pump the brakes

Apply the mechanical brakes

Take a longer route to stop the vehicle

Pull the trailer air supply valve

11 / 30

What can you do to remove contamination before attaching the glad hand couplers?

Blow into the couplers

Nothing

Shake the couplers for 10 seconds each before connecting the glad hand couplers to shake the contamination out

A quick discharge of air pressure before connecting the glad hand couplers to blow contamination out

12 / 30

How are failures in the supply circuit recognized?

The air pressure gauges not replenishing when the air pressure gets below the governor cut-in level

After a post-trip inspection

During pre-trip inspections

During brake failure

13 / 30

What can become a problem of a tractor using coiled plastic air lines?

Nothing

They become brittle over time

They become tough to attach to the trailers

They are often too short and will stretch, causing the lines to shrink in diameter

14 / 30

What should glad hand couplers have on them when not pulling a trailer?

None of the above

Semi-automatic couplers

Dead-end couplers

Full-automatic couplers

15 / 30

During emergency braking, which statement is false?

When safely stopped, the vehicle should not be driven until repairs are completed

Monitoring air pressure gauges for proper operation

Hold a steady brake application to avoid additional loss of air

Pump the brake pedal until air builds up in the lines

16 / 30

What do the air lines that connect to the trailer carry?

Most of the air supply

The air supply and the brake signal to the trailer service and park circuits

All of the air supply only

Hydraulic fluid

17 / 30

If there is any doubt about the security of the glad hand couplers during coupling, pre-trip and en-route inspections, what should happen?

Drive with caution until more evidence is gathered

The Inform your employer

Repairs must be made immediately

Add it to the report

18 / 30

What is the minimum lining thickness for brake linings from the Commercial Vehicle Safety Alliance (CVSA) roadside inspection out-of-service criteria?

1/4 inch (7 mm)

3/4 inch (19 mm)

3/8 inch (9.5 mm)

1/2 inch (13 mm)

19 / 30

Is the trailer supply valve part of the tractor's protection system?

Straight trucks only

Only if towing tandem trailers

Yes

20 / 30

What's the purpose of the slack adjuster?

It automatically adjusts the slack in the brake lines

None of the above

It forces the air intake valve

It converts push rod force from the chamber to torque on the s-cam shafts

21 / 30

What will cause the glad hand couplers to leak?

If the seals are soft or degraded

If the seals are the wrong size

If the couplers are not attached securely

If the air pressure is too much

22 / 30

What does the tractor protection valve do?

Closes off the service line

Uses supply line pressure to open the service line

Controls the supply line

Stops air pressure from entering the lines

23 / 30

If the trailer does lose traction during a trailer supply line failure, what happens?

The ABS will activate

None of the above

It will take three times as long to stop in a straight line

The trailer will swing

24 / 30

What do glad hand couplers do?

Connects the air lines to the trailer

Connects the air lines to the cylinders

None of the above

Connects the air dryer to the air lines

25 / 30

When would the dash park control valve be used?

Parking on a grade

Any situation where there is a loss of service brakes and a quick stop is required

Poor road conditions

Overnight parking

26 / 30

Pushing in the trailer air supply valve (red button) with the park control valve (yellow button) pulled during these vehicle inspections will allow what to happen?

The primary tank is low in air pressure

Any air leaks to be noticed and dealt with before the equipment is put into service

The driver will know if lines were crossed

The secondary tank is low in air pressure

27 / 30

Why do flat deck haulers run the trailer air lines from the back of the frame to the landing leg area of the trailer, rather than from the back of the cab to the nose of the trailer?

No reason

It's the straightest path

Causes less interference from loads that overhang the front of the deck

It's the shortest path

28 / 30

What is the only tractor air system failure that will cause a service circuit's brakes not to work during a service application?

Primary service circuit failure

None of the above

Secondary service circuit failure

Emergency brake failure

29 / 30

What will a failure in the park circuit will cause?

Trailer brakes only will lose air pressure

Parking brakes only will lose air pressure

All brakes will lose air pressure

Park and emergency brake service circuits to lose air pressure

30 / 30

What year did were spring park brakes required on trailers?

1976

1986

1996

1981

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Alberta Air Brake Test 04

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