There are 12 fill-in-the-blank air brake questions for Ontario's "Z" endorsement. These are specific numbers for the air brakes.

• All questions provide feedback.
• All questions are written by a licenced driving instructor.
• Numbers are required for the road test to complete your air brake system's checks.

When you can achieve 80% on this test, no doubt, you are most likely ready to take the MTO "Z" endorsement test.