Reviewed by the DUI Lawyer Toronto defence teamUpdated
Courthouse
Durham Region Courthouse
Police service
Durham Regional Police Service
Main routes
Highway 401, Highway 412, Harwood Avenue
Many Ajax residents drive the 401 into Toronto on weekdays, and many return along the same road after dinner, a game or a work event downtown. When one of those trips ends with a breath demand, the next morning brings urgent questions about work, the car and the court date. As a DUI lawyer Ajax drivers can reach at any hour, DUI Lawyer Toronto explains where your case will be heard, what the suspension means for your commute and how the evidence can be tested. Charges laid in Ajax are prosecuted at the Durham Region Courthouse in Oshawa.
What an Ajax DUI lawyer covers in your first call
Our first conversation is about getting you oriented. We usually cover four things:
- Your paperwork. We read your release documents with you and confirm the charges, any conditions and your first appearance date in Oshawa.
- Your licence. We explain the 90-day Administrative Driver's Licence Suspension, the seven-day impoundment and the administrative monetary penalty, and how long each lasts.
- Your timeline. We ask when you last had a drink, when you got behind the wheel, where you were stopped and how long each step took. Details fade quickly, so it helps to write them down now.
- Your priorities. Some clients worry most about a job that requires driving. Others are concerned about immigration status or travel. Your goals shape the strategy.
There is no obligation, and speaking with us is confidential.
Your court depends on where you were stopped, not where you live
This is one of the most common points of confusion for commuters. The court that hears a DUI case is decided by the location of the stop.
Stopped in Ajax. Charges laid anywhere in town, from Pickering Village to Audley, go to the Durham Region Courthouse in Oshawa. The same is true for stops elsewhere in Durham Region, including neighbouring Pickering and Whitby. If your arrest happened just west of the town line, our page on DUI charges in Pickering explains that side of the region.
Stopped in Toronto on the way home. If police pulled you over before you crossed into Durham Region, the charge would normally be prosecuted at the Toronto courthouse instead. The defence work is the same, but the Crown office, court lists and schedule are different.
Not sure? Look at the court location printed on your release papers. We can confirm it in a few minutes.
Stops on the 401, the 412 and Harwood Avenue
Where you were stopped also tells us which police service investigated you and where its records are kept.
The 401 and the 412
Ajax drivers use the 401 in both directions every day, and many also rely on the 412. Both are 400-series highways patrolled by the OPP. Highway investigations tend to start with an observation such as speed, drifting between lanes or a missed signal. Because the nearest breath instrument may be some distance away, we look closely at the time between the last driving and each breath sample.
Harwood Avenue and neighbourhood streets
On Harwood Avenue and throughout South Ajax, Nottingham and Riverside, most stops are made by the Durham Regional Police Service. RIDE checks are a regular part of Durham enforcement, and drivers tend to encounter them in the evening, on weekends and through the holiday season.
At either kind of stop, the officer does not need to suspect you have been drinking. Under section 320.27(2) of the Criminal Code, a driver who has been lawfully stopped can be required to provide a roadside breath sample if the officer has an approved screening device. The lawfulness of the stop, and of every step that followed, can still be examined.
Protecting your job while your licence is suspended
For someone who drives to Toronto every day, the provincial penalties often hurt before the criminal case even starts. They begin immediately and they are separate from the charge.
| Consequence | When it applies | How long |
|---|---|---|
| Administrative Driver's Licence Suspension | At the roadside or station, for over 80, refusal or a drug evaluation finding impairment | 90 days |
| Vehicle impoundment | At the same time as the suspension | 7 days |
| Provincial suspension on conviction | Only if convicted | 1 year for a first conviction |
| Ignition interlock | After reinstatement following a conviction | At least 1 year for a first conviction |
Ontario's reduced suspension program can allow some eligible first offenders who resolve their case early to return to driving sooner with an interlock installed. It is not the right choice for everyone, because it depends on how the criminal case ends. We explain the trade-off before you decide. Our guide to the 90-day ADLS licence suspension walks through the provincial side in more detail, and our page on first offence DUI charges covers the court penalties.
What the Crown must prove in an Ajax over 80 case
To convict on an over 80 charge, the Crown has to prove that your blood alcohol concentration was 80 mg or more per 100 mL of blood within two hours after you stopped driving. That sounds simple, but proof depends on a chain of steps, each of which can be tested.
We start with disclosure. That usually includes the Intoxilyzer 8000C test records and maintenance logs, the officers' notes, and any in-car or booking video. We compare the times recorded at each stage, check that the breath demand was lawful and look at whether the instrument was operated and maintained properly. Our page on defending over 80 breath readings sets out the issues in more depth.
Charter rights that can change an Ajax case
Some of the strongest defences have nothing to do with how much you drank. They focus on how police treated you.
- Arbitrary detention (section 9). Was there a lawful reason for the stop, and was it carried out properly?
- Unreasonable search (section 8). Breath and blood samples are searches. The demand has to meet the legal standard.
- Right to counsel (section 10(b)). You must be told about your right to a lawyer and given a real chance to speak with one without delay, in private.
When a breach is proven, a judge decides whether to exclude evidence under section 24(2), using the framework from R. v. Grant, 2009 SCC 32. The result depends on the facts of your case.
Refusal and drug-impaired charges in Ajax
Two other charges come up often in Durham Region. A breath test refusal charge applies when a driver fails or refuses a lawful demand without a reasonable excuse. It carries a minimum fine of $2,000 on a first conviction, so refusing is rarely the easier path. A drug-impaired driving charge can rest on a drug recognition evaluation, the officer's observations or a blood sample, and each of those can be challenged.
Working with a Toronto DUI lawyer from Ajax
We do not have an office in Ajax. Our office is at 500 Yonge St in Toronto, and we travel to the Durham Region Courthouse in Oshawa for Ajax clients. Most people start with a phone or video consultation and share documents electronically, so there is no need to make the drive downtown, which matters when you cannot drive yourself.
If your stop happened a little further east, see our page for impaired driving charges in Whitby. Wherever in Durham Region you were charged, you can call our team at 647-370-5179, 24 hours a day.
Where Ajax DUI cases are heard
Durham Region Courthouse
150 Bond Street East
Oshawa, ON L1G 0A2
Court level: Ontario Court of Justice and Superior Court of Justice
Durham Region criminal cases are heard in Oshawa.
Directions to the courthouseDUI charges we defend in Ajax
- Impaired Driving in AjaxDriving while your ability is impaired to any degree by alcohol, a drug or both. These cases often turn on police observations that can be tested in court.Learn more
- Over 80 in AjaxA blood alcohol reading of 80 mg or more within two hours of driving. Breath test procedure and disclosure often decide these cases.Learn more
- Breath Test Refusal in AjaxRefusing or failing to provide a sample carries a $2,000 minimum fine. The legality of the demand and a reasonable excuse are key.Learn more
- Care and Control in AjaxCharged while sitting or sleeping in a parked car? The Crown must still show a realistic risk of danger, and that is often where these cases are won or lost.Learn more
- Drug-Impaired Driving in AjaxCharged with driving high on cannabis, prescription medication or another drug? These cases rely on newer science and officer opinions that can be challenged.Learn more
- Impaired Causing Bodily Harm in AjaxWhen a collision injures someone, an impaired driving charge becomes far more serious. Early advice can protect your rights while evidence is still being gathered.Learn more
- 1st DUI Offence in AjaxMandatory fines, a one-year driving prohibition and a criminal record. Early legal advice can change the outcome of a first charge.Learn more
- 2nd DUI Offence in AjaxA second conviction means at least 30 days in jail and a longer driving prohibition. The Crown must still prove every element.Learn more
- 3rd DUI Offence in AjaxAt least 120 days in jail and a possible lifetime licence suspension. A careful defence and sentencing strategy are essential.Learn more
Ajax neighbourhoods we serve
- Pickering Village
- South Ajax
- Nottingham
- Riverside
- Audley
Our office at 500 Yonge St, Toronto, ON M4Y 1X9 works with clients from every part of Ajax. Consultations can be held by phone or video, and we attend court in Oshawa on your behalf. Learn more about our our Toronto impaired driving defence team.
Ajax DUI lawyer FAQ
Which courthouse hears a DUI charge laid in Ajax?
Ajax is part of Durham Region, and the region's criminal cases are heard at the Durham Region Courthouse in Oshawa. Your release papers name the courthouse and give the date of your first appearance. Many routine appearances can be handled by a lawyer on your behalf, which matters if your licence is suspended and getting to Oshawa is difficult without a car.
I live in Ajax but was stopped on the 401 inside Toronto on my way home. Where is my case?
A DUI case normally follows the place where the stop happened, not your home address. If police stopped you within the City of Toronto, the charge would usually be prosecuted at the Toronto courthouse rather than in Oshawa. If the stop happened once you had crossed into Durham Region, it would go to Oshawa. Your paperwork confirms which court has your file.
Can I keep commuting to work in Toronto after an Ajax DUI arrest?
Not by driving, at least at first. A reading over 80, a refusal or a drug evaluation finding impairment brings an immediate 90-day licence suspension and a seven-day impoundment. Ontario's reduced suspension program may let some eligible first offenders drive sooner with an ignition interlock, but it has strict rules and affects your defence, so get advice before choosing it.
Who stops drivers on Harwood Avenue compared with the 401 and the 412?
The Durham Regional Police Service handles most stops on Ajax streets such as Harwood Avenue and in neighbourhoods like South Ajax, Nottingham and Riverside. The OPP patrols the 400-series highways, including the 401 and the 412. Both agencies apply the same Criminal Code rules, but each keeps its own notes, video and breath records, so disclosure requests must go to the right service.
My roadside test in Ajax showed a reading between 50 and 79. Was I charged with a crime?
A reading from 50 to 79 mg is the provincial warn range, not a criminal offence on its own. It brings a short roadside suspension of 3 days for a first occurrence, 7 days for a second and 30 days for a third within five years, plus program requirements. If you received a court date as well, a criminal charge was laid and you should get legal advice.



