Can I drive while or after using cannabis?

No. Impaired driving is illegal — in Canada, it’s a criminal offence with serious consequences, including possible jail time. The effects of cannabis can last up to 24 hours, depending on individual factors such as your age and genetic makeup, the method of consumption and the potency of the cannabis product. But unlike alcohol, there’s no scientific evidence to suggest a limit that’s safe for driving or how long a driver should wait to drive after consuming cannabis. 

Consuming cannabis can significantly impair your ability to drive safely. Cannabis consumption affects critical driving skills, for example, by causing drowsiness, slowing reaction time and impairing your ability to respond to multiple things at once. 

Plan your ride home in advance, grab a lift from a sober friend, use public transit or call a rideshare service or taxi.