An impaired driving lawyer in Calgary at Centobin Law Office defends individuals charged with DUI, over 80, refusal to provide a breath sample, and drug-impaired driving offences under the Criminal Code of Canada. A conviction carries mandatory minimum fines starting at $1,000, immediate licence suspension, possible jail time, and a permanent criminal record that can affect employment, travel, and immigration status. Early legal intervention by an experienced DUI lawyer in Calgary improves the chances of charge reduction, evidence exclusion, or complete dismissal.
Our criminal defence lawyers in Calgary have defended hundreds of clients against impaired driving charges — from first-time offenders facing Immediate Roadside Sanctions to individuals charged with impaired driving causing bodily harm or death. Every case involves specific procedural requirements that, when not followed by the police, can form the foundation of a strong defence.
Appearing regularly in Calgary Provincial Court, the Court of King's Bench of Alberta, and the Alberta Court of Appeal.
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Impaired driving offences in Calgary include DUI, driving over 80, drug-impaired driving, and refusal to provide a breath sample under Sections 320.14 and 320.15 of the Criminal Code of Canada. A criminal defence lawyer in Calgary evaluates each charge based on the evidence, testing procedures, and police conduct to determine the strongest available defence.
There are four distinct offences under Section 320.14(1):
Operating a vehicle while under the influence of alcohol, drugs, or both impairs your ability to drive. Police establish impairment through observations such as erratic driving patterns, slurred speech, bloodshot eyes, poor coordination, and performance on Standardized Field Sobriety Tests (SFSTs). The Crown does not need to prove a specific BAC level — impairment to any degree is sufficient for conviction.
Operating a vehicle with a blood alcohol concentration (BAC) at or above 80 milligrams of alcohol per 100 millilitres of blood within two hours of driving. This is proven through breathalyzer readings from an approved instrument, not through observable impairment — meaning you can be charged even if you appeared to drive normally. An impaired driving lawyer in Calgary challenges over 80 charges by examining instrument calibration, operator qualifications, and the timing between samples.
Operating a vehicle with a blood drug concentration at or exceeding prescribed limits. For THC (cannabis), the Criminal Code sets two thresholds: 2 nanograms per millilitre of blood as a less serious offence, and 5 nanograms or more as a full criminal offence equivalent to alcohol impairment. Drug Recognition Expert (DRE) evaluations and oral fluid screening devices are used at the roadside. Since cannabis legalization, drug-impaired driving charges in Calgary have increased significantly. Centobin Law also defends clients facing drug offence charges involving possession and trafficking.
Refusing or failing to comply with a lawful police demand to provide a breath, blood, or oral fluid sample — or to perform a physical sobriety test — without a reasonable excuse. Under Section 320.15(1), refusal carries the same penalties as a conviction for impaired driving itself. This is a standalone criminal offence and applies even if the person was not actually impaired.
Impaired driving is not limited to alcohol. Cannabis, prescription medications, over-the-counter drugs, and even fatigue can form the basis of criminal charges under the Criminal Code. Centobin Law defends all categories of impaired driving alongside dangerous driving charges in Calgary.
Early legal intervention by an experienced DUI lawyer in Calgary improves the chances of charge reduction, evidence exclusion, or complete dismissal.
A DUI lawyer in Calgary assesses factors such as prior offences, BAC level, and aggravating circumstances to determine likely sentencing outcomes and build the strongest possible defence. Here is how a first-time or repeat impaired driving charge in Calgary realistically resolves, ordered best first:
When those procedures are not followed, a Calgary DUI defence lawyer can move to have the evidence excluded under Section 24(2) of the Charter and the charges withdrawn. If the Crown cannot justify the delay, the charges may be stayed permanently — regardless of the strength of the evidence.
A first-offence conviction results in a mandatory minimum $1,000 fine, a 1-year federal driving prohibition, a criminal record, mandatory participation in the IMPACT program, and 1 year in the Ignition Interlock Program before full licence reinstatement.
Second Offence — a minimum of 30 days in jail, up to 10 years imprisonment by indictment, and a minimum 2-year driving prohibition. Third or Subsequent Offence — a minimum of 120 days in jail, up to 10 years imprisonment by indictment, and a minimum 3-year driving prohibition.
If you've been charged with impaired driving in Calgary, early legal action can affect both your licence suspension and your criminal case.
Call (403) 249-1733 — Free ConsultationThe penalty for impaired driving in Calgary ranges from a $1,000 fine and licence suspension to mandatory jail time for repeat offences. Alberta operates a dual-track system in which provincial Immediate Roadside Sanctions take effect at the scene, and federal Criminal Code penalties apply upon conviction.
Alberta's IRS program allows police to impose on-the-spot administrative penalties when a driver fails or refuses a breath test or shows signs of impairment. These sanctions are administrative — they take effect immediately and do not require a criminal conviction.
IRS: FAIL (BAC 0.08 or above, or failed drug test)
| Consequence | First Occurrence | Second Occurrence | Third+ Occurrence |
|---|---|---|---|
| Licence Suspension | 90 days immediate (no driving), then Ignition Interlock eligible | 90 days of immediate, extended suspension | 90 days of immediate, extended suspension |
| Vehicle Seizure | 30 days | 30 days | 30 days |
| Mandatory Program | IMPACT course | IMPACT course | IMPACT course |
| Financial Penalty | Towing, impound, and interlock costs | Escalated costs | Escalated costs |
IRS: WARN (BAC 0.05–0.079)
| Consequence | First Occurrence | Second Occurrence | Third+ Occurrence |
|---|---|---|---|
| Licence Suspension | 3 days | 15 days | 30 days |
| Vehicle Seizure | 3 days | 7 days | 7 days |
| Financial Penalty | Towing and impound fees | Escalated costs | Escalated costs + course |
IRS penalties are administrative, not criminal. They take effect immediately and do not require a conviction. However, if your BAC is at or above 0.08, you will likely face both IRS sanctions and Criminal Code charges simultaneously. A criminal conviction adds mandatory minimums on top of the administrative penalties already imposed at the roadside.
| Offence Level | Minimum Penalty | Maximum Penalty | Driving Prohibition |
|---|---|---|---|
| First Offence | $1,000 fine | 10 years imprisonment | 1 year minimum |
| Second Offence | 30 days in jail | 10 years imprisonment | 2 years minimum |
| Third+ Offence | 120 days in jail | 10 years imprisonment | 3 years minimum |
| Causing Bodily Harm | — | 14 years imprisonment | 1–10 years |
| Causing Death | — | Life imprisonment | 1 year to lifetime |
After serving a driving prohibition, Alberta requires participation in the Ignition Interlock Program before full licence reinstatement: 1 year of interlock for a first conviction, 3 years for a second, and 5 years for a third or subsequent offence. A third conviction results in a lifetime licence revocation with the possibility of interlock-conditional reinstatement after 10 years.
After an impaired driving conviction in Calgary, the consequences extend beyond fines and licence suspensions to include a permanent criminal record, employment barriers, travel restrictions, immigration complications, and dramatically increased insurance premiums. A criminal defence lawyer in Calgary works to avoid conviction entirely — because the long-term consequences of a DUI on your record are far more costly than the initial penalties.
Criminal Record — an impaired driving conviction creates a federal criminal record visible on background checks conducted by employers, landlords, and border agencies. A record suspension cannot be applied for until 5 years after all sentences, fines, and conditions are fully completed.
Employment — positions requiring driving, security clearance, government access, or professional licensing may become inaccessible in transportation, oil and gas, healthcare, education, and financial services.
Travel Restrictions — even a single DUI conviction can result in being turned away at the U.S. border without a U.S. Entry Waiver (Form I-192 or I-212).
Immigration Consequences — for non-citizens, a conviction can trigger inadmissibility proceedings, affect pending immigration applications, and, in serious cases, lead to a removal order.
Insurance Premiums — classification as a high-risk driver typically increases premiums by 200% to 300% above standard rates for 6 to 10 years.
Ignition Interlock Requirement — 1 year for a first offence, 3 years for a second, and 5 years for a third or subsequent offence, installed at your expense in every vehicle you operate.
Impaired driving charges in Calgary can be defended by challenging police procedures, breathalyzer accuracy, and Charter compliance at every stage of the investigation. A criminal defence lawyer examines the legality of the traffic stop, the grounds for the breath demand, the operation of the approved instrument, and the handling of your right to counsel — identifying errors that can lead to evidence exclusion, reduced charges, or complete dismissal.
No two impaired driving cases follow the same facts. The Criminal Code and the Canadian Charter of Rights and Freedoms impose strict procedural requirements on police from the initial stop to the administration of breath tests. When those procedures are not followed, a Calgary DUI defence lawyer can move to have the evidence excluded under Section 24(2) of the Charter and the charges withdrawn.
Police must have a lawful reason to stop your vehicle. Random stops at check stops are permitted under the Alberta Traffic Safety Act. Still, an officer who pulls you over outside a checkstop must articulate a specific reason — such as a traffic violation, erratic driving, or equipment deficiency. If the initial stop was arbitrary or unlawful, all evidence gathered afterward may be excluded. A DUI lawyer in Calgary reviews dashcam footage, dispatch records, and officer testimony to assess whether the stop met the legal threshold.
Before demanding a breath sample on an approved instrument (breathalyzer), the officer must have reasonable and probable grounds to believe an impaired driving offence has been committed. This requires both a subjective belief and objective evidence supporting that belief. An impaired driving lawyer in Calgary scrutinizes the officer's notes, in-car camera footage, and testimony to determine whether the grounds were genuinely formed and articulable — or whether they were manufactured after the fact.
Approved instruments must be properly calibrated, maintained, and operated by a qualified technician. A criminal defence lawyer in Calgary reviews calibration check results, error messages, the timing between samples, and whether the instrument was operated according to the manufacturer's specifications and the Canadian Society of Forensic Science standards. If the instrument malfunctioned or the technician deviated from proper procedure, the breath readings may be unreliable and subject to exclusion.
Under Section 10(b) of the Charter, you have the right to speak with a lawyer without delay upon arrest or detention. Police must inform you of this right, provide you with a reasonable opportunity to contact counsel in private, and refrain from questioning or eliciting evidence until you have exercised that right. Failure to provide timely and adequate access to counsel can result in the exclusion of all evidence obtained after the breach — including the breath samples themselves.
In cases where the charge is impaired operation (rather than over 80), the Crown relies heavily on the officer's observations — driving pattern, physical appearance, coordination, and performance on field sobriety tests. A DUI defence lawyer in Calgary challenges these observations by presenting alternative explanations (fatigue, medical conditions, nervousness, environmental factors), examining the officer's training and experience, and testing the reliability of their notes against dashcam and body-worn camera footage.
If the breathalyzer results show a BAC over 80 mg, the defence can present evidence showing that the accused's actual consumption of alcohol was inconsistent with the breathalyzer reading. This requires credible evidence of what was consumed and expert toxicology testimony calculating the BAC based on that consumption pattern. If the evidence raises a reasonable doubt about the accuracy of the readings, the presumption created by the breath results can be rebutted.
Every accused person has the right to be tried within a reasonable time. Under the framework established by the Supreme Court of Canada, delays beyond established ceilings (18 months in Provincial Court, 30 months in Court of King's Bench) are presumed unreasonable. If the Crown cannot justify the delay, the charges may be stayed permanently — regardless of the strength of the evidence. An impaired driving lawyer in Calgary monitors timelines from the date of charge to ensure this right is protected.
If you've been charged with impaired driving in Calgary, early legal action can affect both your licence suspension and your criminal case. Speak with a DUI defence lawyer before your next deadline.
Call (403) 249-1733 — Free ConsultationAfter an impaired driving charge in Calgary, your licence can be suspended immediately under Alberta's Immediate Roadside Sanctions program, and you have only 7 days to file an appeal with the Alberta Transportation Safety Board. A DUI lawyer in Calgary can act quickly to challenge both the administrative suspension and the criminal charge before critical deadlines expire.
The arresting officer issues an Immediate Roadside Sanction (IRS). Your licence is suspended immediately for 90 days — with no driving permitted for any reason during this period. Your vehicle is seized for 30 days. You will be responsible for towing and impound costs.
If your BAC is registered at or above 0.08 on the approved instrument, you will also face a criminal charge under Section 320.14 of the Criminal Code. You will receive a court date, typically several weeks to months in the future.
You have 7 days from the date of the IRS to file an appeal with the Alberta Transportation Safety Board. This appeal challenges the administrative sanctions only — not the criminal charge. Missing this deadline forfeits your right to appeal the roadside penalties.
At your first court appearance, you will enter a plea. If you plead not guilty, disclosure (the Crown's evidence against you) will be requested and a trial date set. The trial process in Calgary Provincial Court typically takes 6 to 12 months from the date of charge.
A first-offence conviction results in a mandatory minimum $1,000 fine, a 1-year federal driving prohibition, a criminal record, mandatory participation in the IMPACT program, and 1 year in the Ignition Interlock Program before full licence reinstatement. Your insurance premiums will increase substantially, and you may face employment and travel restrictions.
Refusing to provide a breath sample when lawfully demanded by a police officer is a standalone criminal offence under Section 320.15(1) of the Criminal Code of Canada. The penalties for refusal are identical to those for an impaired driving conviction — including mandatory minimum fines, driving prohibitions, and a criminal record. A DUI lawyer in Calgary examines whether the demand was lawfully made, whether you had a reasonable excuse for non-compliance, and whether your Charter rights were respected.
Refusing a breathalyzer does not help you avoid a conviction. The Criminal Code treats refusal as its own criminal offence, carrying the same mandatory minimums as an impaired driving conviction. A first-offence refusal results in a minimum $1,000 fine and a 1-year driving prohibition.
Since December 2018, police officers in Canada have the authority to demand a preliminary breath sample from any driver lawfully stopped — without needing reasonable suspicion that the driver has consumed alcohol. This is known as mandatory alcohol screening. For a demand to provide a sample on an approved instrument (at the police station), the officer must have reasonable and probable grounds to believe an impaired driving offence has been committed within the preceding three hours.
A refusal charge is not automatic guilt. An impaired driving lawyer in Calgary examines whether:
If any procedural requirement was not met, the refusal charge may be challenged and the evidence excluded.
Choosing an impaired driving lawyer in Calgary affects how effectively your case is defended against both IRS administrative penalties and Criminal Code charges. Centobin Law focuses on procedural accuracy, local courtroom experience, and dual-track defence strategies that protect your licence and your record simultaneously.
We handle impaired driving cases weekly at Calgary Courts Centre and are familiar with the local Crown prosecutors, disclosure practices, and courtroom procedures that affect case outcomes. This is not a sideline practice area — DUI defence is a core part of our criminal law work.
Book a confidential consultationWe challenge IRS administrative suspensions and Criminal Code charges simultaneously under Alberta law. Many lawyers address only the criminal charge and leave the administrative penalties unchallenged. Centobin Law fights on both fronts — because your licence and your record both matter.
Book a confidential consultationCentobin Law concentrates exclusively on criminal defence — not personal injury, not family disputes, not corporate matters. Our impaired driving work benefits from this focus. We handle DUI cases alongside assault charges in Calgary, domestic violence defence, and other criminal matters that share procedural and evidentiary frameworks.
Book a confidential consultationEvery impaired driving case generates extensive disclosure — officer notes, in-car camera video, breathalyzer calibration records, toxicology reports, and radio dispatch logs. We review every document and recording in full because procedural errors that form the basis of a defence are found in the details, not in summaries.
Book a confidential consultationYour case is handled by a lawyer, not a paralegal or case manager. You speak directly with the impaired driving lawyer who will represent you in court, who knows your file, and who can answer your questions without delay.
Book a confidential consultationWe explain the strength of the Crown's case, the available defence strategies, the realistic range of outcomes, and the costs involved — at the first consultation. No pressure, no inflated promises, no hidden fees.
Book Your Free ConsultationContact a DUI lawyer in Calgary before your first court appearance. You have 7 days from the date of an IRS penalty to file an appeal with the Alberta Transportation Safety Board — missing this deadline forfeits your right to challenge the roadside suspension. Preserve any evidence you have, including receipts showing what you consumed and when you drank. Do not make statements to the police beyond providing identification. Your criminal defence lawyer will request disclosure, review the evidence, and advise you on the strongest available defence.
The legal limit for fully licensed drivers in Alberta is a blood alcohol concentration (BAC) of 0.08 — 80 milligrams of alcohol per 100 millilitres of blood. A BAC between 0.05 and 0.079 triggers provincial administrative sanctions under Alberta's IRS program but does not result in criminal charges. Novice drivers (Class 7 learner or Class 5-GDL) are subject to zero tolerance — any detectable alcohol results in an immediate 30-day licence suspension.
Impaired driving is a criminal offence under Section 320.14 of the Criminal Code of Canada. A conviction results in a federal criminal record, mandatory minimum penalties, and driving prohibitions. This applies to impairment by alcohol, drugs (including cannabis and prescription medications), or a combination of both. The same penalties apply whether the charge is for impaired operation, over 80, or drug-impaired driving.
Yes. Common defences include challenging the legality of the traffic stop, disputing the officer's reasonable grounds for the breath demand, identifying breathalyzer calibration or operation errors, asserting Charter right violations (including right to counsel), and presenting evidence that contradicts the breath sample readings. The specific defences available depend on the facts of your case. A criminal defence lawyer in Calgary reviews the full disclosure to identify the strongest grounds for defence.
A Canadian criminal record for impaired driving can result in denial of entry to the United States. U.S. Customs and Border Protection accesses Canadian criminal records through shared law enforcement databases. Even a single DUI conviction can result in being denied entry at the border without a U.S. Entry Waiver (Form I-192 or I-212).
Yes. For non-citizens, an impaired driving conviction can create criminal inadmissibility under the Immigration and Refugee Protection Act (IRPA). This can affect pending applications for permanent residence, work permits, or study permits and, in some cases, result in a removal order. Depending on the offence classification (summary vs. hybrid), the immigration consequences vary significantly. An impaired driving lawyer in Calgary who understands the implications of both criminal and immigration law can advise on the full scope of risk.
If you received an IRS: FAIL penalty, your licence is suspended for 90 days immediately — no driving is permitted under any circumstances during this period. After the initial 90-day period, you may be eligible to participate in Alberta's Ignition Interlock Program and drive a vehicle equipped with an interlock device. If your case results in a criminal conviction, a federal driving prohibition of at least 1 year is imposed in addition to the administrative suspension. A DUI lawyer in Calgary can challenge both the IRS suspension and the criminal charge to restore your driving privileges as quickly as possible.
Yes. Alberta's Immediate Roadside Sanctions (IRS) program suspends your licence at the roadside — before any court appearance or conviction. If you fail an approved screening device (BAC at or above 0.08) or refuse to provide a sample, your licence is immediately suspended for 90 days, with no driving permitted during this period.
Refusing to provide a breath sample when lawfully demanded is a separate criminal offence under Section 320.15(1) of the Criminal Code. The penalties are identical to those for an impaired driving conviction — a minimum $1,000 fine for a first offence, a driving prohibition, and a criminal record. In Alberta, you also face immediate IRS administrative penalties, including licence suspension and vehicle seizure. An impaired driving lawyer in Calgary can determine whether the demand itself was lawfully made.
Most impaired driving cases in Calgary Provincial Court resolve within 6 to 12 months from the date of charge, depending on complexity, court scheduling, and whether the matter proceeds to trial. Cases involving impaired driving causing bodily harm or death, which may be heard in the Court of King's Bench, can take longer.
Impaired driving involves operating a vehicle while impaired by alcohol or drugs. Dangerous driving involves operating a vehicle in a manner that is dangerous to the public — such as excessive speed, aggressive manoeuvring, or racing — regardless of substance impairment. They are separate Criminal Code offences with different elements and penalty structures. Centobin Law defends both impaired driving and dangerous driving charges in Calgary.
Dangerous driving defenceA DUI conviction classifies you as a high-risk driver in Alberta. Insurance premiums typically increase by 200% to 300% and remain elevated for 6 to 10 years. Some standard insurers will not offer coverage at all, requiring you to obtain a policy through Alberta's Facility Association — the insurer of last resort — at substantially higher rates.
An impaired driving charge is serious — but it is not a conviction. The outcome of your case depends on the evidence, the procedures followed, and the quality of your defence. Centobin Law offers free initial consultations for impaired driving and DUI cases in Calgary. An impaired driving lawyer in Calgary at our firm reviews your disclosure, explains your options, and builds a defence strategy specific to your circumstances.
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