What is the legal blood alcohol limit in Canada?

The maximum legal blood alcohol concentration for fully licenced drivers (people who have obtained their "G" class licence) is 80 milligrams of alcohol in 100 millilitres of blood or 0.08.However, you can also be charged if you are in the "warn range" , which is between 0.05 to 0.079.

There is a zero tolerance policy (mean you cannot have any alcohol or drugs in your system) in Ontario if you are:

  • Under the age of 21;
  • Have a G1, G2, M1, or M2 licence;
  • Drive a vehicle that requires an A-F driver's licence or Commercial Vehicle Operator's Registration; or
  • Drive a road-building machine



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