Can You Call a Lawyer During a DUI Stop in Ontario?

The red and blue lights appear in your mirror. An officer approaches your window. Your mind is racing, and one of the first questions that surfaces is: Can I call a lawyer right now? It is a fair question, but the answer is more nuanced than you may realize. 

Your Right to Counsel Under the Canadian Charter

Under Canadian law, you do have a constitutionally protected right to counsel when you are detained or arrested. However, whether you can call a lawyer during a DUI stop in Ontario depends on timing.

Section 10(b) of the Canadian Charter of Rights and Freedoms is the cornerstone of your rights during any police encounter. It reads:

Everyone has the right on arrest or detention to retain and instruct counsel without delay and to be informed of that right.

It acts as a critical safeguard against coercion, misunderstandings, and violations of procedural fairness. This means that the moment you are detained or arrested, police must:

1. Inform you of your right to retain and instruct a lawyer without delay
2. Inform you of the existence of duty counsel
3. Refrain from taking evidence until you have had a reasonable opportunity to contact a lawyer (once the right has been triggered)

A DUI traffic stop in Ontario almost always qualifies as a detention. The Supreme Court of Canada has confirmed that a driver who is pulled over and required to remain at the scene of a police investigation is, in legal terms, detained. Your Charter rights apply, but when?

The Two Stages of a DUI Stop and Why They Matter

Not all DUI stops are the same. Ontario’s impaired driving law operates in two stages, and your right to call a lawyer applies differently at each one.

Stage 1: The Roadside Screening Test (ASD)

If an officer has reasonable suspicion that you have alcohol in your body, they can demand that you immediately provide a breath sample into an Approved Screening Device (ASD) – a small roadside breathalyzer. Under Section 320.27 of the Criminal Code of Canada, this demand can be made on reasonable suspicion alone.

Here is the key point: courts have confirmed that the right to counsel does not apply before you comply with a roadside ASD demand. The demand is for an immediate sample, and the word “immediate” has legal weight. 

Refusing to comply with an ASD demand is itself a criminal offence under Section 320.15 of the Criminal Code, carrying the same penalties as impaired driving. In practical terms, at the roadside screening stage:

• You must blow into the ASD when instructed
• You cannot use your right to call a lawyer as grounds to delay or refuse the roadside test
• Refusal is a criminal charge, not a legal loophole

These rules can feel counterintuitive, especially when you’ve been told that you have the right to speak to a lawyer. In this specific situation, however, the law prioritizes speed and accuracy. The roadside test is meant to be quick, decisive, and difficult to evade. While you are fully entitled to legal advice later in the process, the ASD demand is not the moment to assert that right. 

Stage 2: Arrest and the Evidentiary Breath Test

If the ASD registers a “Fail” or if the officer has grounds to believe you are impaired by drugs or alcohol, you will be arrested and taken to a police station (or a mobile command unit) for a second, more precise breath test using an approved instrument.

This is where your right to counsel becomes fully and immediately operative. 

At the point of arrest, police must inform you of this right. You also must be given a reasonable opportunity to call a lawyer of your choice. Police cannot administer the test until you have had that opportunity or until you have clearly waived your right.

The results of this test are the primary evidence in most impaired driving prosecutions. If police violate your right to counsel at this stage, a skilled Toronto DUI lawyer can have those results excluded from evidence.

What the Police Are Required to Tell You

When police arrest you on a DUI-related charge, the law requires them to do more than simply say “you have the right to a lawyer.” Their obligations are specific:

• They must actively inform you of your right to retain counsel without delay
• They must tell you about Legal Aid and duty counsel
• They must hold off on the evidentiary test while you make reasonable attempts to reach counsel
• They must provide you with a phone and reasonable privacy to make the call to a DUI lawyer

If an officer rushes you through your rights, administers the breath test before you have had a real chance to reach your lawyer, or fails to mention duty counsel, these are potential Charter violations. They matter enormously in court.

What Happens If Police Violate Your Right to Counsel

A Charter breach does not automatically mean your charges are dropped, but it is a powerful legal argument that an experienced DUI lawyer will know how to use. Under Section 24(2) of the Charter, evidence obtained in a manner that violated your rights may be excluded from trial.

In DUI cases, the evidence that’s most frequently at stake is the evidentiary test result. If the evidentiary breath sample was taken before you had a genuine opportunity to speak to a lawyer, a court may exclude that reading. Without this test, the Crown’s case is substantially weakened – and in many situations, it cannot proceed at all.

This is not a technicality. It is a constitutional protection that exists precisely because the state must operate within the law when it investigates citizens. DUI lawyers who understand the technical requirements of Charter compliance – and who know how to identify breaches – can make the difference between a conviction and an acquittal.

Common Mistakes at a DUI Stop That Hurt Your Defence

Even when people know their rights in theory, the stress of a DUI stop leads to avoidable errors. These are among the most damaging:

• Volunteering information. Telling the officer you “only had two drinks” or that you “feel fine” does not help. It creates evidence;
• Assuming a polite explanation will prevent arrest. Officers are trained to proceed once reasonable grounds exist. Explanations rarely help at the roadside;
• Waiting to call a lawyer. Many people make a mental note to find a lawyer eventually. The strongest defences are built when counsel is retained quickly. You need to do it before paperwork is completed, before witnesses move on, and before you make any statements to police;
• Pleading guilty at the first appearance. A DUI charge is not a parking ticket. The consequences – a criminal record, a minimum one-year driving prohibition, potential jail on a second offence, and severe travel restrictions – are serious and lasting. Do not plead guilty before speaking to a DUI lawyer.

In the moment, it’s easy to say too much, assume cooperation will resolve the situation, or underestimate the seriousness of the charge. Stay calm, exercise your rights wisely, and seek experienced legal counsel as early as you can.

Speak to a Reliable DUI Lawyer

A DUI charge in Ontario carries serious consequences: a mandatory criminal record, a driving prohibition of at least one year on a first offence, steep fines, potential jail time on repeat offences, and travelling issues. Jonathan Lapid has defended impaired driving charges in Toronto and the GTA for over 25 years.

If you have been charged with impaired driving, over 80, refusal, or any related offence, the most important call you can make right now is a free, honest case assessment with Jonathan. An experienced specialist on your side means you won’t make mistakes in your defence, utilizing all the opportunities you might have otherwise missed.

Conclusion

Contact a DUI lawyer before taking an evidentiary breath test at the station. An experienced specialist on your side means you won’t make mistakes in your defence and will utilize all the opportunities you might have otherwise missed.