In Canada, driving under the influence (DUI) or driving while intoxicated (DWI) are American colloquialisms. Legally, the Criminal Code of Canada categorizes these offences under the umbrella of impaired driving. Facing an impaired driving charge is an intimidating experience. A conviction leaves you with a permanent criminal record, mandatory minimum fines, and a driving prohibition.
However, being charged does not mean you are automatically guilty. Navigating your defence requires a clear understanding of Canadian law and the technical nature of these legal battles.
- Understanding the Charges
- Impaired Operation: The Crown must prove beyond a reasonable doubt that your ability to operate a conveyance (vehicle, boat, or aircraft) was impaired to any degree by alcohol, drugs, or a combination of both. This is heavily reliant on officer observations, such as erratic driving, slurred speech, or unsteadiness.
- “Over 80” (BAC): This charge focuses entirely on science, not your behavior. It is an offence to operate a vehicle if you have a Blood Alcohol Concentration (BAC) equal to or exceeding 80 milligrams of alcohol per 100 milliliters of blood ($0.08\%$) within two hours of driving.
- Common Defense Strategies in Canada
Charter Rights Violations
The Canadian Charter of Rights and Freedoms protects individuals against unlawful state actions. If police violate your rights, the evidence they collected (like breath readings) can be excluded from your trial. Common arguments include:
- Section 8 (Unreasonable Search and Seizure): If the police lacked the statutory authority or reasonable suspicion required to demand a breath sample, the test results may be thrown out.
- Section 10(b) (Right to Counsel): Upon arrest or detention at a police station, you must be informed immediately of your right to retain a lawyer and given a private, prompt opportunity to speak with one. Delays by police can compromise the prosecution’s case.
Technical and Scientific Accuracy
Breathalyzer instruments (approved instruments) and roadside screening devices are machines that require precise calibration and operation. Defence counsel will meticulously review maintenance logs, the timing of the tests, and whether the operating technician followed rigorous legal protocols. If there is a “reasonable doubt” regarding the accuracy of your blood alcohol readings, the court cannot convict you on an “Over 80” charge.
- Immediate Action is Critical
Do not wait until your first court date to seek help. Across Canadian provinces, a roadside charge triggers immediate administrative sanctions, such as automatic licence suspensions and vehicle impoundments, before you are ever proven guilty in a courtroom. A dedicated criminal defence lawyer will immediately request the “disclosure” (the police evidence package) to begin building a robust strategy to protect your freedom and your future.