How Long To Wait Before Driving After Using Marijuana


When you go out for an evening, you should know the alcohol content of anything you drink and how many alcoholic drinks you can have and still drive. 

How much cannabis could you smoke and stay under the proposed legal limit for driving? You probably have no idea, and the answer may be zero. 

A Health Canada survey released last year found 39% of users had driven within two hours of consuming cannabis. But how soon is too soon and does that time vary between smoking, vaping and eating marijuana?


Our elected leaders have no answers despite being in the middle of so many legalization measures. All over North America, public education is behind, and the federal rules are still under discussion.

One Public Safety Canada cannabis survey conducted last fall found that although most people understand it’s illegal to drive when impaired by drugs (even legal, prescription ones), 43% of Canadians don’t know how long to wait before driving after smoking pot. The data presented in “Public Opinion Research on Drug Impaired Driving” show that one in six Canadians feel that three hours is long enough.

Among marijuana users in the survey, 28% had reported driving under the influence at some point, and among that group, 25% felt it was less dangerous than driving drunk, and 17% felt there was no risk to their driving.

With marijuana legalization looming, the question is as significant as it is elusive: Smoking a joint will be legal, but how much can be smoked without breaking a driving law? 

April 22, 2018

by Parker Wallace

Profile photo of Parker Wallace
Parker is a cannabis enthusiast to the core who shares a keen interest in listening to what others have to say and understanding what’s important to them. Those who know Parker know that his passion for health and wellness runs deep, and his love of Canada even deeper!


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