ONTARIO AIR BRAKE PRACTICE TEST 04

This Ontario Air Brake practice test, with multiple choice questions, is intended to help you prepare for the written part of the air brake test that is required before you can get your Z endorsement.
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When the air pressure has been reduced to below 552 kPa, it should then be able to rise from 587 kPa to 690 kPa within...?
Two minutes
One minute
Three minutes
Four minutes

Correct!

Wrong!

The minimum pressure for compressor cut-in is...?
552 kPa (80 psi)
452 kPa (65 psi)
502 kPa (72 psi)
602 kPa (87 psi)

Correct!

Wrong!

The application of the automatic trailer spring brakes can be confirmed by...?
Gently applying engine power
Accelerating the vehicle hard
Visual inspection
Physically pushing the trailer

Correct!

Wrong!

The low air pressure warning device is defective if it fails to activate at a minimum level of...?
380 kPa (55 psi)
480 kPa (69 psi)
280 kPa (40 psi)
180 kPa (26 psi)

Correct!

Wrong!

The amount of moisture discharged from tanks other than the supply tank should be...?
Less than that from the supply tank
More than that from the supply tank
The same as that from the supply tank
Any of these

Correct!

Wrong!

You must never make an inspection of your brakes unless...?
All of these apply
The vehicle is on level ground
The spring brakes are applied
Wheel chocks or blocks are in place

Correct!

Wrong!

Air brake chamber leaks must be inspected for with...?
Spring brakes released and service brakes applied
Service brakes released and spring brakes applied
Both sets of brakes applied
Both sets of brakes released

Correct!

Wrong!

Brake lining can be contaminated by...?
Grease and Oil
Grease
Oil
Water

Correct!

Wrong!

The discovery of a small quantity of oil is only no cause for concern if it comes from...?
The supply tank
The second tank
The third tank
The final tank

Correct!

Wrong!

An air pressure buildup time test should be made with the engine idling between...?
600 – 900 RPM
500 – 700 RPM
700 – 1000 RPM
400 – 600 RPM

Correct!

Wrong!

When testing the spring brakes on a towing vehicle and trailer, it is preferable to perform the test on...?
The towing vehicle
The trailer
Either vehicle
Both vehicles

Correct!

Wrong!

A straight truck, tractor or bus must not lose air pressure with the brakes fully applied at a rate of more than...?
21 kPa (3 psi) per minute
25 kPa (3.6 psi) per minute
28 kPa (4 psi) per minute
17 kPa (2.5 psi) per minute

Correct!

Wrong!

You should begin a test of the low air pressure warning device with the pressure above...?
621 kPa (90 psi)
521 kPa (75 psi)
721 kPa (104 psi)
421 kPa (61 psi)

Correct!

Wrong!

The outer cover of an air line has been damaged, but there is no leak to the inner tube. What action should you take?
Have the line replaced
None
Wrap the damaged area with tape
Make a note to monitor it

Correct!

Wrong!

Spring brakes should be tested by applying the brakes and...?
Gently applying engine power in a low gear
Gently applying engine power in a high gear
Sharply applying engine power in a low gear
Sharply applying engine power in a high gear

Correct!

Wrong!

A tractor protection valve should be tested by disconnecting the trailer service line and then...?
Applying the brake pedal
Starting the engine
Driving 100 yards
Shifting into first gear

Correct!

Wrong!

You should make sure that air tanks are securely attached to the vehicle by...?
Pulling on them
Looking at them
Tapping them
Any of these

Correct!

Wrong!

When applying a test to the spring brakes, the test is only passed if...?
The vehicle only rocks slightly
The wheels do not turn more than two revolutions
The wheels do not turn the more than three quarters of a revolution
The vehicle does not travel forward more than 2 m

Correct!

Wrong!

Actual cut-out pressure must never be higher than...?
1000 kPa (145 psi)
932 kPa (135 psi)
972 kPa (140 psi)
902 kPa (130 psi)

Correct!

Wrong!

The amount of air loss from a system should be measured with the brake fully applied for how long?
One minute
30 seconds
Two minutes
Three minutes

Correct!

Wrong!

Brake lining is the friction material that is fastened to...?
The brake shoe
The brake drum
The tire
The wheel rim

Correct!

Wrong!

When checking air brake chambers, you should be looking out for...?
All of these things
Cracks
Non-manufactured holes
Mismatched slack adjuster lengths

Correct!

Wrong!

Air compressors should always be inspected with...?
The engine off
The engine idling in neutral
The engine running in first gear
The engine running in high gear

Correct!

Wrong!

When checking a vehicle's brake drums, you should be looking out for...?
Cracks
Discoloration
Moisture
All of these things

Correct!

Wrong!

If a vehicle has a foundation brake defect, the Ontario Highway Traffic Act specifies that it may not...?
Be operated on any road or highway
Be operated on the road except to be taken to be fixed
Be operated on any high speed road
Be operated in urban areas

Correct!

Wrong!

The maximum allowable air loss for a tractor and trailer when the brakes are applied is...?
28 kPa (4 psi) per minute
32 kPa (4.5 psi) per minute
34 kPa (6 psi) per minute
26 kPa (3.7 psi) per minute

Correct!

Wrong!

A tractor hauling two or more trailers must not lose air pressure with the brakes fully applied at a rate of more than...?
41 kPa (6 psi) per minute
44 kPa (6.3 psi) per minute
37 kPa (5.3 psi) per minute
34 kPa (5 psi) per minute

Correct!

Wrong!

If air brake chambers on different sides off and axle are different sizes, this may cause...?
Braking imbalances
Reduced braking force
Skidding
Tire wear

Correct!

Wrong!

The recommended way to test a trailer's automatic spring brakes is to...?
Pull out the trailer supply valve
Disconnect the trailer air supply line
Pump the brake pedal
Any of these

Correct!

Wrong!

The drive belt of an air compressor should give slightly under...?
Firm hand pressure
Finger pressure
Light hand pressure
A heavy blow

Correct!

Wrong!

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Getting Ready to Drive Commercial Vehicle? Prepare With Ontario Air Brake Practice Test

Getting a commercial vehicle’s driving license is usually a slightly complex, demanding, and systematic procedure than acquiring a regular car license. Anybody who wants to drive a commercial vehicle in Canada is subjected to a compulsory road test and written air brake tests as per the law’s mandates.

The tests are simple but challenging. The Ontario Air Brake Practice Test is your best friend during your preparation for the test. Use the Ontario Air Brake Practice Test to prepare for the test and avoid wastage of money and time.

Below is all you require to know about the test and why you should prepare with the Ontario Air Brake Practice Test.

What does the Ontario Air Brake Test examine?

Candidates taking the examination prove that they are qualified to handle the relevant trucks that they chose. Candidates that pass the test receive the Ontario Class A or Class D Driver License.

The tests also examine knowledge and skills on air brakes systems. Candidates who wish to drive commercial vehicles with air brake systems take the test. Drivers that pass air brake written test receive the Air Brake Z endorsement.

How can you prepare using the Ontario Air Brake Practice Test?

The Ontario Official Air Brake Handbook for practice is available in several online platforms which are accessible to all drivers. The handbook is full of relevant questions and answers for any commercial truck driver — driving instructions and information from the ministry in charge of transport.

The questions are compiled from previous tests taken by former candidates. Predictions are also made for probable questions for every year. Use the Ontario Air Brake Practice Test to start early preparations and avoid the last minute cramming of crucial information.

ontario air brake practice testWhere and when to Write the Ontario Air Brake Test?

A good number of test centers is available in Ontario to facilitate your acquisition of the Commercial truck driving license. There is a good number of locations for the driving tests on different days.

Make sure to book an appointment for your practical test within the location you can easily access on the day of the test. Take time to prepare using the Ontario Air Brake Practice Test Questions and handbook before you book for a test.

How Long Does the Test Take?

The test typically takes approximately 40-70 minutes. The examiner breaks down all that is expected of you before you commence your driving test. Once your trial starts, the examiner fills out your marks in the score-sheet to the last minute.
After you complete the driving test examination, you are subjected to the air brake written test. Some centers may give you a written copy while other test centers will have you taking the written test online.

Requirements for taking the Test?

Before you make the driving test, your examiner will have to check and verify some identification documents. You will be asked to produce an ID or passport, and medical report ascertaining that you fully fit to take the test.

After the test, you will be required to produce a hard copy of your road test confirmation sent to your email. Proof of payment for the knowledge test will be required before you start the air brake driving system.

The Official Ontario Air Brake Handbook is useful in your preparation for the Ontario air brake practice test and the air brake written test. The handbook has guided the larger majority of the qualified drives of Commercial vehicles in Canada.