DUI Lawyer in Markham. Impaired Driving Defence

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Reviewed by Fadi Matthew Kazandji, Founding Partner, Kazandji Law · Serving Markham & York Region

A Markham DUI lawyer defends drivers charged with impaired driving, "over 80," drug-impaired driving, or refusing a breath sample, charges laid by York Regional Police and heard at the Ontario Court of Justice in Newmarket (50 Eagle St. W.). An impaired-driving charge triggers two separate processes at once: a criminal case in court and an immediate provincial licence suspension from the Ministry of Transportation. Acting quickly matters. Call 647-588-3234 for a free, confidential consultation.

Your first 24 hours after a Markham impaired charge

What you do in the first day shapes everything that follows. The licence suspension has already started, the paperwork sets deadlines, and memory of the details fades fast. Priorities:

• Read every document you were given. Your release paperwork states the exact charge, any conditions, and your first court date at the Newmarket courthouse. Photograph it and keep the originals safe.
• Write down everything you remember, today. Where you were stopped, what was said, the timing of the demands, when you were allowed to call a lawyer, how long each step took. Small timing details often become the defence.
• Do not drive. The 90-day administrative suspension is already in effect. Arrange alternatives for work and family now, and note when the 7-day vehicle impoundment ends so you can plan the release.
• Say nothing further about the incident, to police, on social media, or to your insurer beyond what your policy strictly requires, before getting legal advice.
• Call counsel early. Disclosure requests, licence logistics and early resolution positions all benefit from a lawyer being involved before the first appearance, not after.

What "DUI," "over 80" and refusal actually mean in Canada

"DUI" is a common shorthand, but it is not the name of any offence in Canadian law. The impaired-driving offences are set out in Part VIII.1 of the Criminal Code, which was modernized by federal legislation that came into force in December 2018. There are really four ways a driver can be charged:

• Impaired operation, operating a vehicle while your ability to do so is impaired to any degree by alcohol, a drug, or both. Impairment can be proven by evidence such as driving pattern, physical signs and roadside observations, even without a breath reading.
• "Over 80", having a blood-alcohol concentration at or over 80 milligrams of alcohol in 100 millilitres of blood within two hours of driving. This is the offence most people mean by "over 80" or "0.08."
• Drug-impaired driving, having a blood-drug concentration at or over the limit set by regulation (for example, for THC, the active compound in cannabis).
• Refusing or failing to provide a sample, declining, without a reasonable excuse, to comply with a lawful breath or bodily-sample demand.

A key feature of the modern law is the "within two hours" framework, which changed how the timing of drinking and driving is analyzed. If you have been charged, the precise offence shapes the defence strategy, and it is common to face more than one at the same time, for example, both impaired operation and over 80 from a single incident.

The criminal penalties for impaired driving

Impaired driving offences are hybrid, meaning the Crown can proceed by indictment or summarily, and they carry mandatory minimum penalties even on a first offence.

Offence / situation	Mandatory minimum
First offence (impaired / over 80 / drug)	$1,000 fine
First offence, blood-alcohol 120 to 159 mg	$1,500 fine
First offence, blood-alcohol 160 mg or more	$2,000 fine
First offence, refusing a sample	$2,000 fine
Second offence	30 days imprisonment
Third or subsequent offence	120 days imprisonment

On indictment the maximum is up to ten years; on summary conviction the maximum is a fine of up to $5,000 or imprisonment of up to two years less a day. In addition, a conviction carries a mandatory driving prohibition, generally one to three years for a first offence, two to ten years for a second, and a minimum of three years for a third or subsequent offence. One point often surprises people: refusing the breath test is not a way out, the first-offence minimum fine for refusal is $2,000, higher than a standard "over 80," and it carries the same prohibition consequences.

Impaired driving causing bodily harm or death

Where impaired driving is alleged to have caused bodily harm or death, the charges are far more serious. Impaired operation (or over 80, or refusal) causing bodily harm, and causing death, are treated as aggravated offences with substantially higher maximum penalties, and they are frequently prosecuted by indictment in the Superior Court. These cases often involve accident reconstruction, medical evidence, and expert toxicology, and the stakes, including the real possibility of a penitentiary sentence, make experienced defence counsel essential from the outset. If you are facing an allegation involving injury or a fatality, do not speak to police about the incident before getting legal advice.

Ontario adds its own licence consequence at the most serious end: a conviction for impaired driving causing death carries a lifetime licence suspension, reducible only after 25 years if strict criteria are met, along with the mandatory treatment, interlock and medical-evaluation requirements.

"Care or control", you can be charged without driving

A common and counter-intuitive feature of impaired-driving law is that you do not have to be caught driving to be charged. The law reaches a person who has "care or control" of a vehicle while impaired or over 80, which can include sitting in a stopped or parked car, sometimes even with no intention of driving, if the circumstances create a realistic risk that the vehicle could be set in motion. People are sometimes charged after "sleeping it off" in their car. Whether a person truly had care or control in the legal sense is fact-specific and is often a live issue that a defence lawyer can raise.

Drug-impaired driving and cannabis

Since cannabis legalization, drug-impaired driving has its own set of prohibited blood-drug concentrations set by regulation. For THC, a lower level is treated as a less serious, summary-only offence, while a higher level is a full hybrid offence carrying the same penalty structure as alcohol-impaired driving; there is also a combined alcohol-and-drug offence. Certain other drugs carry a "no detectable level" standard. Drug-impaired cases frequently involve a roadside evaluation, an assessment by a specially trained "drug recognition" officer, and in some cases blood samples, each of which has technical and Charter requirements that can be challenged. Because roadside drug testing is newer and more contested than breath testing, these cases can present strong defence opportunities.

The numbers matter in drug-DUI cases. Federal regulations set the prohibited THC levels: 2 nanograms (ng) of THC per millilitre of blood (but under 5 ng) is a less serious, summary-only offence; 5 ng or more is a hybrid offence carrying the same penalty structure as alcohol-impaired driving; and a combined reading of 2.5 ng of THC with 50 mg of alcohol per 100 mL of blood is its own offence. Certain other drugs carry a zero-detectable-level standard.

Ontario’s zero-tolerance rules for young, novice and commercial drivers apply to cannabis exactly as they do to alcohol: any detectable THC at the roadside triggers an immediate suspension, before any criminal analysis even begins.

What Ontario does to your licence (a separate system from court)

This is the point that confuses most people: the criminal charge and the provincial licence penalties are two parallel systems. The Ministry of Transportation imposes administrative penalties immediately, at the roadside, regardless of what later happens in criminal court.

Immediate roadside consequences

A driver who registers a "fail" (0.08 or over), refuses a test, or is found drug-impaired faces an immediate 90-day administrative licence suspension and a 7-day vehicle impoundment, before any finding of guilt. There are also administrative penalties in the "warn range" (0.05 to 0.079), which is below the criminal threshold but still triggers escalating suspensions and monetary penalties, along with a licence reinstatement fee. Zero-tolerance rules also apply to young, novice and commercial drivers, who must have no alcohol or drugs in their system while driving.

Consequences on conviction

If the criminal charge results in a conviction, Ontario imposes its own licence suspension on top of the court's driving prohibition: generally a suspension of at least one year for a first conviction, at least three years for a second within ten years, and a lifetime suspension for a third (reducible in some cases after a set period). A conviction also requires completion of a mandatory education or treatment program and, for a set period, participation in Ontario's ignition interlock program, which allows driving only in a vehicle equipped with an approved breath-testing device.

The escalation has a hard end point: a fourth conviction within 10 years brings a lifetime licence suspension with no possibility of reduction.

The warn range: penalties below the criminal limit

The criminal offence starts at a blood-alcohol concentration of 0.08, but Ontario penalizes drivers well before that. If a roadside screening device registers between 0.05 and 0.079, the “warn range”, or you fail a Standard Field Sobriety Test, the province imposes immediate administrative penalties even though no criminal charge is laid. These penalties changed on January 1, 2026, the first-occurrence suspension is now 7 days, not the old 3.

Occurrence	Immediate suspension	Program	Penalty
First	7 days	8-hour education course	$250
Second	14 days	16-hour treatment program	$350
Third and subsequent	30 days	16-hour treatment program + 6-month ignition-interlock condition	$450

A licence reinstatement fee applies every time your licence is suspended. Warn-range suspensions are administrative, there is no court date and no criminal record, but they appear on your driving record, commonly affect insurance, and each repeat escalates the response.

Separate zero-tolerance rules apply to drivers 21 or under and to G1, G2, M1 or M2 licence holders: any detectable alcohol or drugs triggers an immediate 7, 14 or 30-day suspension with the same monetary penalties, plus a fine of $60 to $1,000 if convicted. Commercial drivers face 3-day roadside suspensions under the same zero-tolerance standard.

Ignition interlock and the road back to driving

A criminal conviction starts a structured path back to your licence. Ontario requires completion of a mandatory education or treatment program, and participation in the ignition interlock program, a device installed in your vehicle that prevents it from starting if it detects alcohol. The minimum interlock periods track your record: at least 1 year for a first conviction, at least 3 years for a second, and at least 6 years for a third. Second and subsequent convictions also require a medical evaluation before Ontario will consider reinstatement.

In some cases, Ontario’s Reduced Suspension with Ignition Interlock Conduct Review Program lets a driver shorten the post-conviction suspension by installing an interlock device early. Whether and when that option makes sense interacts with how the criminal case resolves, another reason to have counsel managing both tracks together.

The practical costs are real: program fees, interlock installation and monthly rental, the reinstatement fee, and the insurance consequences that follow a conviction. A viable defence, or a resolution that avoids a criminal conviction where the evidence supports it, is often worth far more than it costs.

What happens at a RIDE stop in York Region

Many impaired cases in Markham begin at a York Regional Police R.I.D.E. (Reduce Impaired Driving Everywhere) check, a roadside program that runs year-round and intensifies over holidays and long weekends. At a lawful stop, an officer may ask questions and, using a power called mandatory alcohol screening, can require a roadside breath sample on an approved screening device without first having to form a suspicion, provided the officer is acting lawfully and has the device on hand. A "fail" at the roadside leads to a further, more formal breath demand on an approved instrument at the station, where the evidentiary readings are taken. Each step, the stop, the screening demand, the right to counsel, and the instrument testing, has legal requirements, and a breakdown at any stage can become the foundation of a defence. From there the case moves through the ordinary criminal process at Newmarket: first appearance, disclosure (including the breath-instrument records), Crown pre-trial, and, if it does not resolve, trial.

The two breath demands, and why the difference matters

Police can make two different demands, with different legal requirements. At the roadside, an officer can demand a sample on an approved screening device, and under mandatory alcohol screening, no suspicion is needed, provided the officer is acting lawfully and actually has the device at hand when the demand is made (the point on which R. v. Breault turned). A roadside “fail” is not evidence of guilt by itself; it is the gateway to the second demand.

The evidentiary demand comes next: samples on an approved instrument, usually at the station, taken by a qualified technician. This is where your right to counsel fully attaches, where the two evidentiary readings are produced, and where the maintenance, calibration and operation records of the instrument become disclosure the defence is entitled to scrutinize. A breakdown at either stage, the roadside demand or the station procedure, can take the readings out of the case.

How a DUI case moves through the Newmarket courthouse

Every Markham impaired-driving charge is prosecuted at the Ontario Court of Justice in Newmarket, 50 Eagle Street West, there is no criminal courthouse in Markham itself. Knowing the sequence helps you make decisions calmly rather than under pressure.

• Release and first appearance. Most drivers are released from the station with paperwork setting a first court date. The first appearance is administrative, no trial happens, and counsel can often appear for you so you don’t miss work.
• Disclosure. The Crown must provide the evidence: officer notes, video, breath-room records and the instrument’s maintenance and calibration documentation. The scope of breath-instrument disclosure was settled by the Supreme Court in R. v. Gubbins (2018), obtaining and scrutinizing these records is foundational DUI defence work.
• Crown pre-trial and judicial pre-trial. Counsel meets the Crown, and, where needed, a judge, to narrow the issues, discuss resolution and set realistic trial estimates.
• Charter applications and trial. Most contested DUI trials turn on Charter issues, the lawfulness of the stop, the demand and access to counsel, argued alongside the technical breath evidence.

On timing: the Supreme Court’s Jordan framework sets a presumptive ceiling of 18 months from charge to the end of trial in the Ontario Court of Justice, and delay beyond it that is not caused by the defence can result in a stay of proceedings. In practice a contested impaired file at Newmarket spans many months, while the administrative licence consequences run on their own clock in parallel.

Roadside vs conviction: the two hits, side by side

People often mix up what happens immediately with what happens only if the Crown proves the case. The split matters:

Immediately at the roadside (no conviction needed)	Only if convicted in court
90-day administrative licence suspension	Mandatory minimum $1,000 fine (higher for high readings or refusal)
7-day vehicle impoundment	Criminal driving prohibition of at least 1 year
$550 penalty plus reinstatement fee	Ontario licence suspension of at least 1 year
8-hour education course	Education/treatment program and ignition interlock (at least 1 year)
.	Criminal record, insurance reclassification, travel and immigration consequences

The roadside penalties take effect regardless of what later happens in court. What a defence protects is the right-hand column, the criminal record, the prohibition, the conviction-level suspensions and the long insurance tail.

Beyond the court case: insurance, employment and travel

The consequences of an impaired-driving conviction reach well past the courtroom. Insurance is often the largest long-term cost: a conviction typically leads to a driver being treated as high-risk, with dramatically increased premiums for years. A criminal record can affect current and future employment, particularly for jobs that require driving or bonding, and can create difficulties for professional licensing. Travel can be affected too, an impaired-driving conviction can complicate or bar entry to certain countries, including the United States. For people who are not Canadian citizens, a conviction can carry immigration consequences and should be discussed with both criminal and immigration counsel. These downstream effects are a major reason it is worth fighting an impaired charge properly rather than simply pleading guilty.

Defences a DUI lawyer looks for

Impaired-driving cases are among the most technical in criminal law, and a careful review frequently reveals issues. These are avenues counsel investigates, not guarantees.

• Was the stop lawful? Police need lawful authority to stop and detain a driver. In R. v. McColman (2023), the Supreme Court excluded evidence where officers stopped a driver who was no longer on a highway. An unlawful stop can taint everything that follows.
• Was the demand valid? In R. v. Breault (2023), the Supreme Court confirmed that a roadside screening demand is invalid unless the officer actually has an approved screening device available when the demand is made. An invalid demand can undermine a refusal charge.
• Was your right to counsel respected? Section 10(b) of the Charter guarantees the right to speak with a lawyer without delay; failures at the station stage are a common basis to exclude breath results (see R. v. Suberu).
• Was the instrument reliable? Following R. v. St-Onge Lamoureux, the defence focus is on whether the approved instrument was properly maintained and operated, which is why maintenance and calibration records matter and must be disclosed.
• Care or control. Where you were not driving, the Crown must still prove you had care or control of the vehicle in the legal sense.
• Charter breaches and delay. Unreasonable search, arbitrary detention, and unreasonable delay can each lead to a remedy, up to exclusion of evidence under section 24(2) (R. v. Grant) or a stay.

Why Kazandji Law for a Markham impaired-driving charge

Impaired-driving defence is technical work: the stop, the demands, the instrument records and the Charter timeline each have to be pulled apart, while the Ontario licence clock runs in parallel. Our criminal defence lawyers, licensed by the Law Society of Ontario, defend impaired, over-80, refusal and drug-DUI charges for Markham drivers at the Newmarket courthouse, and we manage both tracks together: the criminal case and the licence, interlock and program consequences that follow it.

We start with a free, confidential consultation: what you were charged with, what the paperwork actually says, what deadlines are already running, and what a realistic defence path looks like on your facts. From there we secure disclosure, including the breath-instrument maintenance and calibration records, and build the case from the roadside stop forward. If you or a family member has been charged in Markham or anywhere in York Region, call 647-588-3234 before your first appearance.

Frequently asked questions

This page provides general legal information about impaired-driving law in Ontario and is not legal advice. Penalties change. Ontario updated its impaired-driving penalties in 2026, and every case is different; for advice about your specific situation, contact a lawyer. Contacting Kazandji Law does not create a solicitor-client relationship.