The Police Vehicle in Your Rearview Mirror

You hear the siren. The officer approaches and says: "I'm demanding you provide a sample of your breath into an approved screening device."

In that moment, you have a choice: blow or refuse. Many people think refusing is the safer move. Under Canadian law, that assumption is often wrong.

If you've been stopped by police in the GTA and asked for a roadside breath sample, what you do next matters. Refusing a breathalyzer in Ontario is a separate criminal offence — one with penalties that can exceed those for "over 80." Below, the Toronto criminal defence lawyers at Daniel Brown Law explain seven things about refusal charges that most drivers don't know: what the charge is, how it's proven, and where real defences can arise.

What Happens at the Roadside?

A police officer who reasonably suspects you have alcohol in your body can demand a breath sample into an Approved Screening Device (ASD) "as soon as practicable." Refusing that demand triggers a separate criminal charge with its own rules, penalties, and defences. The seven points below cover what people most often get wrong.

Seven Things to Understand Before Considering a Refusal

1) The Penalty for Saying "No" Can Be Harsher Than Blowing Over

For a first-time offender, the minimum fine for refusing a breath demand is higher than the minimum fine for blowing over the legal limit — unless your BAC is exceptionally high. This is not a drafting oversight. The law is designed this way deliberately, to remove any financial incentive to refuse.

Offence	Minimum Fine
Refusal to provide breath sample	$2,000
80–119 mg/100 mL	$1,000
120–159 mg/100 mL	$1,500
160+ mg/100 mL	$2,000

Refusal also triggers automatic licence suspensions and other consequences similar to impaired-driving offences.

2) You're Not Charged With Impairment — You're Charged With Disobedience

When you refuse a breath demand, the Crown doesn't have to prove you were drunk. The charge is about disobeying a lawful order from a peace officer. The trial won't focus on your sobriety, your driving pattern, or how many drinks you had. The central question is whether a valid demand was made and whether you failed to comply. Your level of intoxication is secondary.

3) An Officer's Mistake Can Be Your Best Defence

Because the charge is about lawful compulsion, the validity of the demand matters. The Crown must prove beyond a reasonable doubt that:

The demand was made by a peace officer;
The officer had a reasonable suspicion you had alcohol in your body (for an ASD demand); and
The demand was made as soon as practicable.

If any of those preconditions weren't met — no objective grounds, improper timing, or other procedural defects — the demand may be invalid, and the charge can fail. These defects can often be raised directly at trial without a separate Charter application.

4) Most "Reasonable Excuses" Don't Hold Up in Court

A genuine reasonable excuse is a defence — but courts set the bar high, and the burden is on you to prove it on a balance of probabilities. Excuses that typically fail:

"I was too drunk to comply."
"I thought I could speak to a lawyer first at roadside."
"My lawyer told me not to blow."

A real excuse involves an actual, documented inability to provide a sample at that moment — for example, a serious medical condition, backed by medical evidence. Simply claiming a medical issue is not enough.

5) The Law Is Now Clear on Intent

Courts debated for years what mental state the Crown needed to establish. Parliament resolved it: the Crown only has to show you knew a demand had been made. It doesn't need to prove you intended to refuse — only that you knew and didn't comply.

6) A Refusal Cannot Be Undone

Once you clearly refuse — "I'm not blowing" — the offence is complete. Changing your mind minutes later almost never undoes it. Whether a refusal was unequivocal is a factual question for the trial judge, but a clear verbal refusal consistently counts.

7) Your Roadside Words Are Evidence in a Refusal Case

For impaired driving charges, what you say before being advised of your rights is often difficult for the Crown to use. Refusal cases are different. The words "I refuse" are the act that completes the offence. They are typically admissible to prove the charge.

How Daniel Brown Law Defends Refusal Charges

Demand validity audit: analyzing grounds, timing, ASD availability, and statutory compliance
Evidence integrity review: notes, video, disclosure gaps, and officer memory
Medical and physical capability: where appropriate, obtaining expert support for genuine "reasonable excuse" arguments
Charter litigation when warranted: unlawful detention, delay, or rights violations that may exclude evidence
Negotiation and resolutions: where facts allow, pursuing withdrawals or reduced outcomes

Immediate Penalties Under the Highway Traffic Act

Licence suspension: 90-day administrative suspension
Vehicle impoundment: 7-day impoundment
Administrative penalty: $550 fee
Reinstatement fee: $275

Criminal Penalties and Other Consequences

Criminal record: permanent, with impact on employment, travel to the US, and immigration status
Fines: mandatory minimum of at least $2,000 on refusal
Licence suspension: a further suspension beyond the initial administrative one
Ignition interlock device: required installation
Mandatory programs: Back on Track or mandatory alcohol counselling
Insurance: significantly higher premiums

FAQs: Refusing a Breath Sample in Ontario

Is refusing better than blowing over?: Usually no. Minimum fines for refusal are often higher, and the collateral consequences are just as serious.
Do I have the right to call a lawyer before a roadside ASD test?: Generally no. The right to counsel typically arises upon arrest or detention for further testing — not for the initial ASD demand at roadside.
Can medical issues be a "reasonable excuse"?: Sometimes, but the standard is strict and usually requires medical proof tied specifically to the testing moment.
Can I change my mind after saying "no"?: Once a refusal is unequivocal, the offence is complete. Changing your mind moments later rarely changes the result.
What are the immediate consequences of being charged?: A 90-day licence suspension, 7-day vehicle impoundment, administrative fees, a permanent criminal record, and potential impacts on employment and travel. Consult a criminal lawyer immediately.
What should I do after being charged?: Get legal advice immediately. Early strategy and disclosure requests significantly affect outcomes. Call 416-297-7200.

Talk to a Toronto Criminal Lawyer Now

If you've been charged with refusing to provide a breath sample (Criminal Code s. 320.15(1)) anywhere in the GTA, timing matters. Speak with an experienced defence lawyer at Daniel Brown Law to understand your options and protect your record.

Phone: (416) 297-7200
Office: Downtown Toronto — serving Toronto, Peel, York, Durham, and across Ontario.

This article is for general information only and is not legal advice. Every case turns on its own facts.

Refusing a Breath Sample in Toronto: 7 Surprising Truths