Marked Departure & Dangerous Driving
Canadian Criminal Case Law Summary
R. v. Roy confirms that criminal dangerous driving requires proof of a marked departure from how a reasonable person would drive. A brief error in judgment is not enough. The Crown must prove conduct that is significantly more serious than ordinary negligence.
As criminal lawyers many times we will refer to cases like R. v. Roy when defending dangerous driving charges.
In this Supreme Court of Canada decision, the Court clarified how the marked departure test must be applied. The Court emphasized that a momentary driving mistake does not automatically amount to a crime.
If you’ve being charged with dangerous driving, call 416-731-7113 to speak to Nicholas Charitsis to discuss your case.
What Happened in R. v. Roy?
R. v. Roy involved a fatal collision in British Columbia in November 2004.
Randy Roy was driving home from work with a passenger in his motor home. The weather was poor. Fog limited visibility, and the unpaved road leading to the highway was steep, snowy and slippery. Roy knew the road well and had travelled it hundreds of times.
Roy stopped at an intersection before entering Highway 5. He then pulled onto the highway into the path of an approaching tractor-trailer.
The truck driver applied his brakes but could not avoid the collision. Roy’s passenger was killed. Roy survived but had no memory of the collision or the events surrounding it.
Roy Was Also Driving While Disqualified
Roy was charged and convicted of dangerous driving causing death.
He was also convicted of operating a motor vehicle while disqualified under the Criminal Code because he was already subject to a court-ordered driving prohibition.
The dangerous driving conviction eventually reached the Supreme Court of Canada. The Court found that the evidence showed a single, momentary error in judgment under difficult driving conditions. That was not enough to establish the marked departure from reasonable driving required for a criminal dangerous driving conviction.
The Supreme Court overturned Roy’s dangerous driving conviction and entered an acquittal.
However, Roy’s driving while disqualified conviction was not challenged before the Supreme Court. The Court specifically noted that the driving while disqualified charge was not in issue.
Relevant Case Law:
R. v. Roy — Supreme Court of Canada (2012 SCC 26)
[View the full decision on CanLII (Canadian Legal Information Institute)]
The Legal Issue Before the Supreme Court
The Supreme Court examined how courts should determine whether driving amounts to a marked departure, verses was the situation a momentary lapse of judgement?
The case involved a collision that occurred while the driver was entering a highway.
The key question was whether the brief lapse in judgment rose to the level of criminal dangerous driving. The Court focused on the difference between negligence and criminal fault.
The issue was whether the driving conduct was truly serious enough to justify a criminal conviction.
What the Court Confirmed About Dangerous Driving
R. v. Roy is an important Supreme Court of Canada decision about what the Crown must prove in a dangerous driving case. The Court confirmed that dangerous driving requires more than showing that a driver made a mistake, caused an accident, or created a dangerous situation.
The Crown must prove that the driving represented a marked departure from the standard of care expected of a reasonable driver in the same circumstances.
A Driving Mistake Is Not Automatically Dangerous Driving
The Court emphasized that driving is an everyday activity where mistakes can have serious consequences. Even careful drivers can make a poor decision or suffer a momentary lapse in attention. That does not automatically make the conduct criminal.
When deciding a dangerous driving charge, the court must consider all the circumstances, including the road, weather, visibility, traffic and the manner in which the vehicle was being driven.
The court must also consider two separate issues:
- Was the driving objectively dangerous?
- Did the driver’s conduct amount to a marked departure from what a reasonable driver would have done?
These questions cannot simply be treated as the same thing. Dangerous driving alone does not automatically establish the level of criminal fault required for a conviction.
The Result of an Accident Does Not Determine Guilt
Roy also confirms that the seriousness of an accident cannot be used as a shortcut to finding criminal fault. A collision resulting in serious injury or death can be tragic without the driver’s conduct meeting the legal test for dangerous driving.
The focus must remain on how the person drove and the risks created by that driving, not simply on what happened afterward.
In Roy’s case, the Supreme Court found that his decision to enter the highway was consistent with a momentary error in judging speed and distance in difficult conditions.
The consequences were devastating, but the evidence did not prove the marked departure required for dangerous driving. His conviction was overturned and an acquittal was entered.
Why R. v. Roy Matters in Dangerous Driving Charges
Dangerous driving charges often arise after a serious collision. However, R. v. Roy confirms that a serious accident does not automatically mean the driver committed a criminal offence.
The court must examine the driving itself and determine whether the Crown has proven a marked departure from the standard expected of a reasonable driver in the same circumstances.
R. v. Roy confirms several important principles:
- Courts must focus on the manner of driving, not simply the consequences of an accident.
- The Crown must prove the required criminal fault beyond a reasonable doubt.
- A momentary error in judgment or simple carelessness is not necessarily dangerous driving.
- Objectively dangerous driving does not, by itself, prove the marked departure required for a conviction.
- Road conditions, visibility, traffic and the surrounding circumstances can all form part of the court’s analysis.
Serious Consequences Do Not Automatically Mean Criminal Fault
In dangerous driving cases, the defence must analyze whether the driving truly represents a marked departure. Context matters, including road conditions, visibility, and reaction time.
The Crown Attorney must prove more than a bad decision or a tragic outcome. The evidence must establish the level of fault required for dangerous driving. In Roy, the Supreme Court found that this threshold had not been met and entered an acquittal.
For someone facing a dangerous driving charge in Ontario, Roy reinforces an important defence principle: the court must assess what the driver actually did and the circumstances surrounding the driving, rather than judging criminal responsibility from the seriousness of the accident alone.How This Case Shapes Defence Strategy
What This Case Means for You
If you have been charged with dangerous driving, a serious accident does not automatically mean you are guilty. R. v. Roy confirms that the Crown Attorney must prove more than a mistake, poor judgment or a serious outcome. The evidence must establish the level of criminal fault required for dangerous driving.
As defence lawyers we’ll examine how the collision occurred, road and weather conditions, visibility, traffic, witness evidence, police reports and other evidence surrounding the driving. These details can be important when determining whether the Crown can prove a marked departure from the standard expected of a reasonable driver.
Speak With Our Dangerous Driving Lawyers
At Charitsis Law, our criminal defence lawyers can review the evidence against you and explain the possible defences to a dangerous driving charge. We look beyond the seriousness of the accident and focus on what the Crown can actually prove.
Call and speak directly with Mr. Charitsis about your case. There is no obligation, and he is happy to answer your questions and discuss how our lawyers can help fight the charge.
Frequently Asked Questions About R. v. Roy and Dangerous Driving
Q. What does the Crown have to prove for dangerous driving?
A. The Crown must prove more than unsafe driving or a driving mistake. The court must consider whether the driving was objectively dangerous and whether it represented a marked departure from the standard expected of a reasonable driver in the same circumstances. The Crown must prove the required criminal fault beyond a reasonable doubt.
Q. Does causing a serious accident mean I am guilty of dangerous driving?
A. No. R. v. Roy confirms that courts cannot determine guilt simply from the consequences of an accident. A collision involving serious injuries or death can occur without the driver’s conduct reaching the criminal standard for dangerous driving. The court must examine how the vehicle was driven and the circumstances leading to the collision.
Q. Can one driving mistake result in a dangerous driving conviction?
A. A single mistake does not automatically amount to dangerous driving. In Roy, the Supreme Court described the driver’s conduct as a single and momentary error in judgment. Even though the consequences were tragic, the evidence did not establish the marked departure required for a criminal conviction.
Q. What does “marked departure” mean in a dangerous driving case?
A. A marked departure is driving that goes significantly beyond ordinary carelessness or a simple mistake. The court compares the accused’s conduct with what a reasonable driver would have done in the same circumstances. The Crown must establish this higher level of fault before a person can be found guilty of dangerous driving.
Q. What evidence can be important when fighting a dangerous driving charge?
A. The evidence depends on how the incident occurred. A criminal defence lawyer can examine witness statements, police reports, dashcam or surveillance video, vehicle data, collision reconstruction evidence, road conditions, weather, visibility, traffic and the events immediately before the incident. The defence strategy should focus on what the evidence actually proves about the manner of driving.
Q. Can bad weather or poor road conditions be part of a dangerous driving defence?
A. Yes. The court considers the driving in all the surrounding circumstances. In Roy, fog, poor visibility, snow and slippery road conditions formed part of the factual background. These circumstances do not automatically provide a defence, but they can be important when deciding whether the driver’s conduct amounted to a marked departure.
Q. What is the difference between careless driving and dangerous driving?
A. Careless driving is generally a provincial offence in Ontario, while dangerous operation is a criminal offence under the Criminal Code. Dangerous driving requires a significantly higher level of fault. Roy reinforces that ordinary negligence or carelessness should not automatically be treated as criminal dangerous driving.
Q. Can a dangerous driving charge be fought even when there was a serious collision?
A. Yes. A serious collision does not remove the Crown’s obligation to prove every element of the charge beyond a reasonable doubt. A defence lawyer can challenge whether the evidence establishes objectively dangerous driving and the required marked departure. In Roy, the collision caused a death, yet the Supreme Court overturned the dangerous driving conviction and entered an acquittal.
