Facing your first DUI charge is overwhelming. The criminal justice system feels confusing and intimidating, especially when you’re unfamiliar with court procedures and legal terminology. This step-by-step guide walks you through exactly what happens from arrest to resolution, helping you understand what to expect at each stage.
Stage 1: The Arrest and Immediate Aftermath (Day 1)
At the Roadside
After failing a roadside screening test, police will:
- Arrest you for impaired driving or driving over 0.08
- Read you your rights (right to counsel, right to remain silent)
- Transport you to the police station or a RIDE checkpoint location
At the Station
You’ll undergo:
- Breath testing on an approved instrument (two samples, 15 minutes apart)
- Booking procedures (fingerprints, photographs)
- Opportunity to speak with a lawyer by telephone
- Typically held for several hours until sober
- Released on a Promise to Appear or Form 10 Undertaking
Immediate Penalties (Before Court)
Ontario imposes automatic administrative penalties upon charge:
- 90-day licence suspension
- 7-day vehicle impoundment
- $275 licence reinstatement fee (if you win your case, this is refunded)
- $198 administrative monetary penalty
Even though you haven’t been convicted, you cannot drive for 90 days.
Your First Call
Contact a criminal defence lawyer immediately—preferably before you even leave the station. Early legal advice ensures you don’t make statements or decisions that harm your case later.
Stage 2: First Appearance (4-8 Weeks After Arrest)
You’ll receive paperwork indicating your first court date at an Ontario Court of Justice location.
What Happens:
- You (or your lawyer) appear before a Justice of the Peace
- The charges are formally read
- The court confirms your identity and address
- You’re asked to enter a plea (almost always “not guilty” at this stage)
- A date is set for the Crown Pre-Trial or disclosure review
What NOT to Do:
- Don’t plead guilty at first appearance—you haven’t seen the disclosure yet
- Don’t discuss your case in the courthouse (conversations aren’t private)
- Don’t miss this date (a warrant will be issued for your arrest)
Duration: 5-10 minutes
Many first-time accused are surprised how brief and administrative this appearance is. It’s not a trial—it’s just the beginning of the process.
Stage 3: Disclosure Review (6-12 Weeks After First Appearance)
The Crown is required to provide “disclosure”—all evidence they intend to use against you.
Disclosure Typically Includes:
- Police officer notes and narrative
- Breath technician notes
- Breathalyzer test results and calibration records
- Arresting officer’s grounds for the stop and arrest
- Audiovisual recordings (if available)
- Any witness statements
- Approved instrument maintenance records
Your Lawyer’s Role:
This is where legal expertise becomes crucial. Your lawyer reviews disclosure looking for:
- Charter rights violations
- Procedural errors
- Technical deficiencies in breath testing
- Weaknesses in police evidence
- Grounds for exclusion of evidence
Many defences are invisible to untrained eyes. What looks like a solid case against you may have fatal flaws that only Karapancev Law DUI Lawyers or similarly experienced counsel can identify.
Stage 4: Crown Pre-Trial (3-5 Months After Charge)
Before proceeding to trial, your lawyer meets with the Crown prosecutor to discuss the case.
Purpose:
- Narrow the issues in dispute
- Discuss potential resolution (plea negotiations)
- Identify which witnesses will be called
- Estimate trial length
- Address any preliminary legal issues
Possible Outcomes:
- Case Withdrawal: If disclosure reveals fatal weaknesses (Charter violation, insufficient evidence), the Crown may withdraw charges entirely.
- Plea Bargain Offer: The Crown might offer to reduce charges (e.g., to careless driving) in exchange for a guilty plea.
- Proceed to Trial: If no resolution is reached, the case proceeds to trial.
Your Input:
Your lawyer should discuss the Crown’s position with you and provide advice about whether to accept any offers. The final decision to plead guilty or proceed to trial is always yours.
Stage 5: Judicial Pre-Trial (Optional, 4-6 Months After Charge)
In some cases, a judicial pre-trial occurs where your lawyer, the Crown, and a judge (different from your trial judge) discuss the case.
Purpose:
- A judge provides an independent assessment of the case strength
- Encourages reasonable settlement discussions
- Addresses complex legal issues before trial
This step isn’t mandatory but can be helpful in complicated cases or where plea negotiations have stalled.
Stage 6: Trial Scheduling and Preparation (6-18 Months After Charge)
Ontario courts are backlogged. Trial dates typically occur 12-18 months after your initial charge, sometimes longer.
Pre-Trial Preparation:
Your lawyer will:
- File necessary motions (Charter applications, disclosure motions)
- Subpoena witnesses
- Prepare cross-examination questions
- Develop your defence strategy
- Prepare you to testify (if you’re testifying)
You Should:
- Maintain contact with your lawyer
- Preserve any evidence favorable to your defence
- Identify potential witnesses
- Keep your contact information current with the court
Stage 7: The Trial (Trial Day)
DUI trials typically take 1-2 days, sometimes longer for complex cases.
Trial Structure:
Morning of Trial:
- Last-minute discussions between lawyers and Crown
- Final plea bargain negotiations possible
- Court opens with the judge presiding
Crown’s Case:
- Crown calls witnesses (usually arresting officer and breath technician)
- Your lawyer cross-examines each Crown witness
- Crown may introduce documentary evidence (breath test results, calibration records)
Defence Case:
- Your lawyer may call witnesses (toxicologist expert, alibi witnesses)
- You may testify (or may choose not to—you have that right)
- Crown cross-examines defence witnesses
Closing Arguments:
- Your lawyer argues why you should be acquitted
- Crown argues why you should be convicted
Charter Applications:
- If your rights were violated, your lawyer argues evidence should be excluded
- This sometimes occurs before the trial begins or partway through
Verdict:
- Judge may render decision immediately
- Or may “reserve decision” and provide written reasons weeks later
Stage 8: Sentencing (If Convicted)
If convicted, sentencing usually occurs immediately or at a later date.
First Offence Penalties:
- Minimum $1,000 fine (usually $1,500-$2,000)
- 1-year driving prohibition
- Mandatory ignition interlock requirement (minimum 1 year after prohibition ends)
- Victim surcharge (30% of fine)
- Possible jail time (rare for first offence unless aggravating factors)
Sentencing Submissions:
Your lawyer can present mitigating factors:
- No prior record
- Employment circumstances
- Rehabilitation efforts
- Character references
- Completion of alcohol programs
Stage 9: Appeals (If Applicable)
If convicted, you have the right to appeal either the conviction or the sentence (or both) to the Ontario Court of Appeal.
Appeal Grounds Might Include:
- Legal errors by the trial judge
- Unreasonable verdict
- Miscarriage of justice
Appeals are complex and require specialized legal expertise. Time limits are strict (typically 30 days from conviction).
Alternative Resolutions
Diversion Programs:
Ontario does not have widespread diversion for DUI offences, unlike some other provinces. However, in rare cases involving very low breath readings and exceptional circumstances, alternative resolutions may be possible.
Withdrawal of Charges:
If disclosure reveals significant Crown weaknesses, charges may be withdrawn at any stage before trial.
Reduced Charges:
Sometimes the Crown will agree to reduce charges to provincial offences (careless driving, driving without reasonable consideration) which avoid criminal records.
How Long Does Everything Take?
Typical Timeline:
- Arrest to first appearance: 4-8 weeks
- First appearance to disclosure: 6-12 weeks
- Disclosure to Crown pre-trial: 8-12 weeks
- Crown pre-trial to trial: 8-12 months
- Total: 12-18 months from arrest to trial
This timeline can be longer if there are preliminary motions, complex disclosure issues, or court scheduling backlogs.
The Importance of Legal Representation
Every stage of this process involves legal complexities that significantly impact your case outcome. From disclosure review to cross-examination to Charter arguments, experienced legal representation is the difference between conviction and acquittal in many cases.
Many people convicted of first-time DUI could have successfully defended their charges with proper legal representation but chose to navigate the system alone or plead guilty without understanding their options.
The Bottom Line
The criminal justice system for DUI charges is lengthy, complex, and has life-altering consequences. Understanding each stage helps reduce anxiety and ensures you make informed decisions.
Don’t assume your case is hopeless because you failed a breath test. Many successful defences exist, but they require experienced legal advocacy to identify and pursue. The system is intimidating by design—but with the right guidance, you can navigate it effectively and protect your future.






