Cannabis and Driving in Ontario: Know the Rules

Illustration of a steering wheel for the Mellow Malibu cannabis and driving in Ontario guide

Cannabis can affect coordination, reaction time and judgement. Driving while impaired by cannabis is a criminal offence in Canada, and Ontario adds its own rules on top. Here is what every adult should know.

Impaired driving is illegal for everyone

It is illegal to drive a car, truck, boat, snowmobile or other vehicle while impaired by cannabis. Police can use roadside oral fluid screening and drug recognition evaluations, and penalties can include licence suspension, fines, vehicle impoundment, a criminal record and jail time.

Zero tolerance for some drivers

In Ontario, certain drivers must have no cannabis in their system at all, including:

No consuming in vehicles

You cannot consume cannabis in any vehicle or boat that is being driven or will be driven, whether you are the driver or a passenger.

Transporting cannabis legally

When cannabis is in a vehicle, it must be in its original packaging and unopened, or packed in baggage that is fastened closed and not readily available to anyone in the vehicle. The trunk is the simplest option.

There is no safe shortcut

The effects of cannabis can last for hours, and the timing varies by person, product and format; edibles and beverages in particular can take longer to start and last longer. If you have consumed cannabis, do not drive. Plan ahead with a sober driver, a taxi or rideshare, or public transit.

Order without driving

If you would rather not drive to the store, we deliver from 9am to 11pm anywhere within 42 km of our Barrie store. See how delivery works. For other rules, including where you can consume and possession limits, read Ontario cannabis rules.

Related guides: Ontario Cannabis Rules, Cannabis Delivery in Innisfil: Fees, Hours and ID Rules, Cannabis Edibles 101: Labels, Limits and Starting Low.

This article is general information for adults 19+ in Ontario and is not legal advice. Check official government sources for current rules. Never drive impaired.

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