Impaired Driving Defence in Ontario
Impaired driving allegations may be based on alcohol, drugs, or a combination. The prosecution can rely on driving evidence, physical observations, standardized tests, toxicology, statements, and expert interpretation.
Impairment Must Be Proved
The Crown must prove the specific offence beyond a reasonable doubt, including operation and impairment by alcohol or a drug where charged. Poor driving or unusual behaviour may have more than one explanation.
Evidence We Review
- The reason for the stop or police approach and the timeline that followed
- Driving pattern, collision evidence, witness observations, and video
- Screening and evidentiary demands, instructions, and police compliance
- Access to counsel, statements, medical conditions, medication, fatigue, and injury
- Breath or blood records, drug-recognition evidence, toxicology, and expert opinions
Time-Sensitive Evidence
Business video, home-camera footage, vehicle data, receipts, medical records, and witness memories can disappear. Preserving evidence early may help test the police timeline and alternative explanations.
Criminal and Provincial Consequences
An impaired-driving case may involve an immediate provincial suspension as well as a criminal prosecution. A conviction can bring a criminal record, driving prohibition, fine, insurance effects, and other consequences depending on the record and facts.
How Broadway Law Prepares the Defence
We reconstruct the sequence minute by minute, compare observations with objective records, assess Charter issues, and determine whether expert evidence is needed.
This page provides general information, not legal advice. Every case depends on its facts and the law in force at the relevant time.