DriveTest Canada
  • Checked against Ontario Ministry of Transportation on 2026-09-15
  • Every figure below names the record it came from

Ontario air brake Z endorsement knowledge test

Air brake Z knowledge test at a glance

Question count
Ontario Ministry of Transportation publishes no count
DriveTest, Knowledge Testsverified 2026-09-15
Pass mark
80% total score
DriveTest, Knowledge Testsverified 2026-09-15
Time limit
Not timed

Typically 20 to 30 minutes

DriveTest, Knowledge Testsverified 2026-09-15
Fee
$66.00 package covering the air brake knowledge test and the practical test
DriveTest, Fees for Drivers' Licences and Testsverified 2026-09-15
Retake fee
$16.00 for each further knowledge test attempt
DriveTest, Fees for Drivers' Licences and Testsverified 2026-09-15
Minimum age
Not stated in the record we hold
Where it is taken
Paper at every DriveTest location; Computer at some DriveTest locations
DriveTest, Knowledge Testsverified 2026-09-15
Appointment
Not required
DriveTest, Knowledge Testsverified 2026-09-15
Result
Marked on the spot
DriveTest, Knowledge Testsverified 2026-09-15
Languages
20 languages

Arabic, Badini, Chinese (Cantonese), Croatian, English, Finnish, French, German, Greek, Hindi, Italian, Korean, Kurmanji, Polish, Portuguese, Punjabi, Russian, Somali, Spanish, Tamil

DriveTest, Knowledge Testsverified 2026-09-15
DriveTest, Fees for Drivers' Licences and Testsverified 2026-09-15

The Air brake Z knowledge test has 80% total score, and Ontario Ministry of Transportation publishes no question count. The listed fee is $66.00 package covering the air brake knowledge test and the practical test. Every row carries the record it was read from and the date it was checked.

  • Z is an endorsement rather than a class, and it can sit on top of any licence from Class A to Class G.
  • The 80 percent pass mark comes from the DriveTest rule that covers knowledge tests for every class. Nothing official describes the parts of the air brake test on its own.
  • No question count is published for it.
  • There is a practical test as well, done on a stationary vehicle, and failing it stops you sitting your commercial road test.
  • An air brake course at an accredited driving school can exempt you from both the knowledge test and the practical test.
  • Taken separately the knowledge test is $16.00 and the practical test is $50.00.
An unmarked tractor trailer in profile from a low angle on a prairie highway shoulder at first light, casting a long shadow across the road.
  • Every figure on this page is traced to Ontario Ministry of Transportation
  • Official records for the Air brake Z knowledge test are linked below
  • No practice bank is published for this test here
Choose a practice runSee what it covers

Practice for this test is still being written. The format above is the real one.

What the questions cover

Every Ontario question sits under one subject, and the number beside it is how many we hold. The reading column goes to the lesson behind the subject.

SubjectQuestionsReading
Road signs20The lesson behind it
Emergencies and breakdowns6The lesson behind it
Speed and following distance5The lesson behind it
Parking and stopping5The lesson behind it
Intersections and turns4The lesson behind it
Documents, fines and demerit points4The lesson behind it
Passing and lanes3The lesson behind it
Sharing the road3The lesson behind it
Impaired and distracted driving3The lesson behind it
Weather and night driving3The lesson behind it
Right of way2The lesson behind it
Licensing and the graduated system2The lesson behind it

How the Air brake Z knowledge test passes

The authority publishes 2 or 3 sections.

The published pass rule is 80% total score.

The test is not timed and typically takes 20 to 30 minutes.

Fees and rules change, so check the record itself before you pay for anything. The date beside each figure is the day we last read it.

What Ontario Ministry of Transportation does not publish

These are the fields the licensing body leaves out. They stay blank here rather than being filled with another province's number or with an estimate.

  • No published figure for the question count.

A run built on a missing length draws the whole bank instead of guessing at one, and the panel before the first question says so.

Reading for the Air brake Z knowledge test

The lessons carry the rule, the guides carry the longer answer, and both end with the note that changes the answer in Ontario.

An uncontrolled rural crossroads with sight lines open across low fields, two vehicles approaching from different arms at a distance.Read

The 11 study lessons

Written for Ontario

Each lesson ends with the Ontario note that changes the answer, so the reading matches the exam you are sitting.
The interior of a quiet public service office with empty chairs in rows and a plain counter, winter light falling in bands across a pale floor.Read

What is on the G1 knowledge test

Ontario

What DriveTest publishes about the G1 format and score, and what happens on the day from the counter to the result.
A four way intersection seen from above and to one side, lane markings and crosswalks clearly painted, three vehicles approaching from different arms in low winter sun.Read

The G1 and G2 restrictions, explained

Ontario

Which conditions attach to a G1, which ones survive the first road test into the G2, and what happens to a novice driver who breaks one.
A roadside gantry carrying two blank plates against a wide pale sky, both plates deliberately empty with nothing printed on them.Read

How Ontario road tests are marked, and what an automatic fail is

Ontario

How the marking on an Ontario road test works, what ends a test immediately, and why the number of allowed errors that circulates online is not something we will print.
All Ontario tests and stages

Questions people ask about this test

How many questions are on the G1 test?

DriveTest does not publish a question count. It says knowledge tests have two or three sections and require a total score of at least 80 percent.

DriveTest, Knowledge Testsverified 2026-09-15
How many mistakes can you make on the G1 test?

DriveTest does not publish a fixed number of allowed mistakes. It publishes a total score of at least 80 percent to pass.

DriveTest, Knowledge Testsverified 2026-09-15
What does the G1 test cost in Ontario?

The standard package is $159.75. It covers the G1 knowledge test, a Class G2 road test and a five year licence. An extra knowledge test attempt costs $16.00.

DriveTest, Fees for Drivers' Licences and Testsverified 2026-09-15
What happens if I pass one section and fail the other?

Test results remain valid for one year. If you try again within that year, you retake only the sections that did not meet MTO standards. An extra attempt costs $16.00.

DriveTest, Knowledge Testsverified 2026-09-15
How long do I have to hold a G1 before the road test?

Twelve months, or eight months if you finish an approved driver education course. The course is the only way to shorten that wait.

Ontario Ministry of Transportation, G1 licensing rules and DriveTest fee scheduleverified 2026-08-27
How many DriveTest centres are there in Ontario?

More than 55 across the province, all run by the same contracted operator on behalf of the ministry.

Ontario Ministry of Transportation, G1 licensing rules and DriveTest fee scheduleverified 2026-08-27
Are some DriveTest centres easier than others?

The published results say yes. Road test pass rates measured across Ontario centres span about 30 percentage points from the strongest centre to the weakest, which is why booking location gets argued about so much.

CBC News freedom of information release of Ontario DriveTest results (2022 data)verified 2026-08-27
How long does the whole Ontario licence take?

Roughly 20 to 24 months from a fresh G1 to a full G, depending on how fast you clear each hold and how soon you can get a road test booking.

Ontario Ministry of Transportation, G1 licensing rules and DriveTest fee scheduleverified 2026-08-27

Sources for this page

Each record below is where a number on this page comes from, with the date it was last checked against it.