Home › Road Rules › Alcohol and Driving Limits
Alcohol and Driving Limits
What you need to know
Zero-tolerance rules for novice drivers and legal limits for fully licensed drivers. In the official Ontario tests, questions on this topic come from the Ministry of Transportation's Driver's Handbook (for cars) and Motorcycle Handbook (for riders).
Sample practice questions
What is the blood alcohol limit that triggers a criminal charge of driving while ability impaired in Ontario?
- 0.03 per cent
- 0.05 per cent
- 0.08 per cent
- 0.10 per cent
💡 A blood alcohol concentration at or above 0.08 per cent is a criminal offence, while a warning range suspension can begin at 0.05 per cent.
How much alcohol may a holder of a G1 or G2 licence have in their blood when driving?
- Up to 0.05 per cent
- Up to 0.08 per cent
- Up to 0.02 per cent
- None at all; the limit is zero
💡 Drivers in the Graduated Licensing system must have a zero blood alcohol level while driving, with stricter penalties than full licence holders.
For a fully licensed driver, what blood alcohol range triggers a roadside licence suspension (warn range) in Ontario?
- 0.00 to 0.03 per cent
- 0.05 to 0.08 per cent
- 0.08 to 0.10 per cent
- 0.10 per cent and above
💡 A blood alcohol concentration in the warn range (generally 0.05 to 0.08 per cent) can result in an immediate licence suspension, while 0.08 and above is a criminal offence.
Frequently asked questions
- What is the blood alcohol limit that triggers a criminal charge of driving while ability impaired in Ontario?
- 0.08 per cent A blood alcohol concentration at or above 0.08 per cent is a criminal offence, while a warning range suspension can begin at 0.05 per cent.
- How much alcohol may a holder of a G1 or G2 licence have in their blood when driving?
- None at all; the limit is zero Drivers in the Graduated Licensing system must have a zero blood alcohol level while driving, with stricter penalties than full licence holders.
- For a fully licensed driver, what blood alcohol range triggers a roadside licence suspension (warn range) in Ontario?
- 0.05 to 0.08 per cent A blood alcohol concentration in the warn range (generally 0.05 to 0.08 per cent) can result in an immediate licence suspension, while 0.08 and above is a criminal offence.
More questions on Alcohol and Driving Limits and every other topic live in the G1 practice test and M1 practice test.