10/11/2026
Impaired Driving in Canada: The Consequences, Your Charter Rights, and Available Legal Defences
Drinking and driving is dangerous, irresponsible, and entirely preventable. Every driver has a responsibility to protect the lives and safety of others on the road. Impaired driving can result in devastating consequences, including serious injuries, loss of life, and lasting harm to families and communities.
Canada's impaired driving laws reflect the seriousness of this conduct, imposing substantial penalties on those convicted of driving while impaired by alcohol or drugs.
However, recognizing the dangers of impaired driving does not mean that individuals accused of an offence should be denied their constitutional rights. Our justice system is founded on the presumption of innocence, the right to a fair trial, and the principle that the Crown must prove its case beyond a reasonable doubt.
An impaired driving charge is not automatically a conviction. Police must conduct their investigations lawfully, and the evidence must satisfy the requirements of the Criminal Code.
Canada's Impaired Driving Laws and Penalties
On June 21, 2018, Bill C-46 received Royal Assent, introducing significant reforms to Canada's impaired driving laws. The principal alcohol-impaired driving provisions came into force on December 18, 2018.
These reforms strengthened penalties, introduced graduated mandatory minimum fines for certain offences, and expanded police powers to conduct roadside alcohol screening.
These are minimum penalties. A conviction may also result in a criminal record, a driving prohibition, provincial licence suspension, increased insurance premiums, and significant personal and professional consequences.
Repeat offenders face even more serious penalties, including mandatory minimum periods of imprisonment.
The message is clear: If you have been drinking, do not drive. Arrange a designated driver, use public transportation, or call a taxi or rideshare service. No destination is worth risking someone's life.
Mandatory Alcohol Screening: Police Powers Have Limits
Under section 320.27(2) of the Criminal Code, police may require a driver who has been lawfully stopped to provide a roadside breath sample without first establishing reasonable suspicion that the driver has consumed alcohol, provided the statutory requirements are satisfied.
This authority is intended to promote road safety and deter impaired driving.
However, it does not give police unlimited investigative powers.
Traffic stops must be conducted lawfully, and officers must respect constitutional protections against arbitrary detention, unreasonable search and seizure, and discriminatory policing.
Where a traffic stop or investigation violates the Canadian Charter of Rights and Freedoms, defence counsel may challenge the lawfulness of the police conduct and seek appropriate remedies.
In certain circumstances, evidence obtained through a Charter violation may be excluded under section 24(2).
The Right to Speak with a Lawyer
Section 10(b) of the Charter guarantees the right of individuals who are arrested or detained to retain and instruct counsel without delay.
Although roadside alcohol screening is subject to a limited exception to the usual right-to-counsel requirements, police must respect this constitutional protection once it becomes applicable.
Potential violations may arise where police fail to advise a detained person of the right to counsel, unreasonably delay access to a lawyer, deny a reasonable opportunity for private consultation, or improperly continue investigative procedures.
Another important protection arises from the Supreme Court of Canada's decision in R. v. Prosper, [1994] 3 S.C.R. 236.
In circumstances where the Prosper warning is required, police must ensure that a detained person who appears to abandon efforts to contact counsel understands the continuing right to a reasonable opportunity to consult a lawyer before treating that right as waived.
Failure to comply with these constitutional obligations may support a Charter application.
Protecting constitutional rights does not excuse impaired driving. It ensures that the law is enforced fairly and that convictions are based on legally obtained, reliable evidence.
Are Alternative Resolutions Available?
Every impaired driving prosecution must be assessed on its own facts.
Depending on the evidence, legal issues, and the Crown's position, defence counsel may explore alternative resolutions where appropriate.
Dangerous Driving — Section 320.13(1) of the Criminal Code
Dangerous driving is a separate criminal offence concerned with the manner in which a vehicle is operated rather than whether the driver's ability was impaired.
It is not automatically a lesser-included offence of impaired driving. However, where supported by the evidence and legally permissible, it may form part of a negotiated resolution.
The basic dangerous driving offence does not carry a mandatory minimum punishment, meaning a conditional discharge may be legally available in appropriate circumstances.
Careless Driving — Section 130 of Ontario's Highway Traffic Act
Careless driving is a provincial offence involving driving without due care and attention or without reasonable consideration for other persons using the highway.
In some cases, the prosecution may agree to a resolution involving careless driving where evidentiary weaknesses or legal considerations justify that outcome.
Such a resolution may avoid a criminal conviction but can still result in fines, demerit points, licence consequences, and other penalties.
Careless driving is not automatically a lesser-included offence of impaired driving, and any resolution must comply with the applicable legal procedures.
Can an Accused Receive a Conditional Discharge?
A conditional discharge allows a person found guilty of an eligible criminal offence to avoid a registered conviction, provided the statutory requirements are satisfied.
However, a discharge is unavailable for an offence carrying a mandatory minimum punishment, including the principal impaired driving offences.
Where an appropriate alternative criminal offence does not carry a mandatory minimum sentence, a conditional discharge may be considered under section 730 of the Criminal Code, subject to the court's discretion.
No particular resolution or sentence is guaranteed.
Road Safety and Constitutional Rights Are Not Opposing Principles
As a criminal defence lawyer, I recognize the serious harm that impaired driving can cause. The purpose of defending an individual charged with impaired driving is not to minimize that harm or suggest that drinking and driving is acceptable.
Rather, it is to ensure that the law is applied properly, that police investigations comply with constitutional requirements, and that every accused person receives a fair opportunity to answer the allegations.
Our justice system must be capable of doing both: holding those who commit offences accountable and protecting the fundamental rights of every individual accused of a crime.
At 10(B) Criminal Law Center, we carefully examine the circumstances of impaired driving investigations, including traffic stops, roadside screening procedures, breath-testing evidence, access to counsel, and potential Charter violations.
Where legally appropriate, we challenge the evidence, advance available defences, and explore reasonable alternative resolutions.
Drinking and driving is never worth the risk. But being charged with an offence does not mean surrendering your right to a fair defence.
Facing an Impaired Driving Charge?
Contact 10(B) Criminal Law Center to discuss your legal rights and available options.
Serving Niagara Region, Milton, Brampton, and surrounding Ontario communities.
Disclaimer: This article provides general legal information and does not constitute legal advice. Every case depends on its particular facts and applicable law.
