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Drinking and Driving

Police officer administering a roadside breath test during an Ontario traffic stop, illustrating mandatory alcohol screening and the legal requirement to comply.

Can You Refuse a Roadside Breath Test in Ontario?

Impaired driving laws in Ontario and across Canada have changed significantly over the past decade. One of the most impactful developments was the introduction of mandatory alcohol …

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Police officer administering a roadside breath test during an Ontario traffic stop, illustrating mandatory alcohol screening and the legal requirement to comply.

Can You Refuse a Roadside Breath Test in Ontario?

Impaired driving laws in Ontario and across Canada have changed significantly over the past decade. One of the most impactful developments was the introduction of mandatory alcohol …

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Conceptual image showing handcuffs, car keys, and alcohol, illustrating how DUI charges may affect employment and legal status in Ontario.

How DUI Charges May Impact Your Employment in Ontario

In Ontario, a charge for impaired driving is not merely a traffic issue. It is a criminal allegation under the Criminal Code of Canada that can affect a person’s mobility, professio…

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Editorial image introducing a legal guide explaining Ontario’s warning range rules for impaired driving and administrative penalties.

What is the “Warn Range” for Impaired Driving in Ontario?

Most Ontario drivers are aware that driving with a blood alcohol concentration (BAC) of 0.08% or higher can result in a criminal impaired driving charge. What is far less understood…

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DUI-stop

8 Mistakes Ontario Drivers Make After a DUI Stop That Can Inevitably Hurt Their Case

Mass Tsang presents you with the eight most common mistakes Ontario drivers make during a DUI stop that can compromise their ability to mount an effective defence. We’ll also review…

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sign-don't-drive-drunk

How Police Use Roadside Screening Tools in Ontario — And When They Can Be Challenged

Given our client base’s relative confusion over roadside screening for DUI and unfamiliarity with DUI defences for roadside testing, now seems like an opportune time to explore the …

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barmans-hands-sprinkling-cocktail

When Are Ontario Bars and Restaurants Liable for Drunk Driving Accidents?

With a keen interest in all elements of Canadian DUI law, we’re going to divert our usual attention from criminal law to focus on this unique element of civil law. That is, when can…

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Understanding the DUI Arrest Process in Ontario

Understanding the DUI Arrest Process in Ontario

Being arrested for driving under the influence in Ontario is a stressful and overwhelming experience. Whether the stop happens during a routine traffic check, after a collision, or …

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teen-driving-high

What You Need to Know About Cannabis Impaired Driving in Canada

The number of people Canadian police arrest annually for drug-impaired driving began increasing dramatically in 2018, hitting an all-time high (pardon the pun) in 2021, according to…

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DUI-checkpoint-sign

The Effectiveness of DUI Checkpoints: Facts versus Myths

With the holiday season upon us, Ontario police have begun making a concerted effort to ensure highway safety by proactively targeting impaired drivers. The linchpin of this effort …

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A driver holding the steering wheel during a police traffic stop for suspected impaired driving in Ontario

Understanding the Over 80 Rule and Impaired Driving in Ontario

Ontario imposes strict rules to protect public safety, and one of the most essential concepts for drivers to understand is the “Over 80” rule. This threshold — 80 milligrams of alco…

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young-man-driving-with-open-beer-can

Underage DUI Charges in Ontario Explained

Learn how Ontario’s zero-tolerance DUI laws affect drivers under 22. Discover penalties, legal distinctions, and expert insights from Mass Tsang lawyers on defending underage DUI ch…

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young-guy-drunk-in-car

How to Fight an Impaired Driving Charge in Canada

Learn how to fight impaired driving charges in Canada. Explore conviction stats, defence strategies, and expert legal insights from Mass Tsang LLP to improve your chances of avoidin…

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