Cannabis-impaired Driving.

With cannabis now being legal, CAA is committed to raising awareness about its impact on road safety.

Impaired retro guy playing ping pong

CAA’s #DontDriveHigh campaign reinforces that smoking cannabis can impair motor skills, reaction time, perception and judgement. Our message is simple – Don’t drive high.

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Effects of Cannabis While Driving.

The most common misconceptions out there are that cannabis doesn’t affect your driving or that it can actually make you a better driver. The reality is that drivers who use cannabis are at an increased risk of getting into a motor vehicle collision.

Cannabis is second only to alcohol as the drug most frequently found among drivers involved in crashes and drivers charged with impaired driving. It is also the drug most frequently mixed with alcohol usage in vehicle crashes.

Cannabis mixed with keys.

Driving While Under the Influence of Cannabis Affects Your:




Reaction time


Ability to pay




Ability to judge

Source: CAA National

New Impaired Driving Penalties in Effect.

In Ontario, it is illegal to operate any type of motor vehicle while under the influence of alcohol or drugs. This applies to all types of motor vehicles, including cars, trucks, boats, snowmobiles and off-road vehicles.

As of July 1, 2018, a zero-tolerance approach for alcohol and cannabis took effect for young, novice and commercial drivers.

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Police officer stopping a vehicle.

Public perception of
marijuana-impaired driving.

What Do Ontario Drivers Think?

A study commissioned by CAA South Central Ontario shows that 1.9 million Ontario motorists have driven under the influence of cannabis. The study also indicates that there are valid concerns about road safety and cannabis-impaired driving among novice motorists in Ontario.

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Plan a Safe Way Home.

Many illegal and prescription drugs can impair a person’s capacity for driving by reducing the ability to divide attention and allocate concentration. It can also result in poor time and space management. Make sure you’re prepared with alternate ways to get home.

You Have Options:


Have a designated

Call a friend or
loved one


Call a cab or


Take public


Stay over and
sleep it off

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Other Helpful Resources.