Quebec's Blood Alcohol Driving Limit
While almost all provinces in Canada enforce a legal blood alcohol limit of 0.05, the maximum blood alcohol content allowed by law in the province of Quebec is the sole exception, set at 0.08, a comparable limit to that enforced in the United States, the United Kingdom and New Zealand.
November 30, 2009 UPDATE: The new blood alcohol content limit in Quebec has been dropped to 0.05. Details here.
Calculate How Much You Can Safely Drink
If you intend on driving after drinking, save yourself the second-guessing and worry. Get a rough idea of how much you can safely drink by using this alcohol evening planner provided by Educ'Alcool. Just input your gender, weight and what kind of drinks you want to have, whether you'll be eating (including how many courses) and the planner will estimate your blood alcohol content, indicating whether it's safe (and legal!) to drive. But keep in mind the evening planner only offers a general idea. MADD Canada, for example, actively discourages drivers from assuming the evening planner is a precise tool, worried people might rely on its rough guidelines as if they were gospel and inadvertently put lives in danger. For far more accurate results, the best tool for calculating blood alcohol concentration is, of course, a breathalyzer, such as the AlcoMate Premium AL7000 Pro. 
Sources: Société de l'assurance automobile du Québec, Service de police de la ville de Montréal, Educ'Alcool
