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Ontario Class B (Bus) Commercial Licence Practice Test 11

  • Based on 2025 ON commercial driver's licence manual
  • Updated for September 2025
  • Perfect for first-time and renewal commercial applicants, and those adding endorsements
  • Triple-checked for accuracy

Welcome to the final practice test in this series—Practice Test 11. This test centers around vehicle maintenance, an often overlooked but essential part of being a Class B driver in Ontario. The test comprises questions and requires an 80% pass score. Maintenance is not just about vehicle longevity but also about ensuring a safe journey for all.

Pass the first time with Premium
ON driver's license
  • Based on 2025 ON commercial driver's licence manual
  • Perfect for first-time and renewal commercial applicants, and those adding endorsements

What you need to know

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Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.

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