What Is Dangerous Driving?
Dangerous driving — formally called dangerous operation — is defined in section 320.13(1) of the Criminal Code. A person commits the offence when they operate a motor vehicle in a manner that, having regard to all the circumstances, is dangerous to the public.
The section was rewritten by Bill C-46 in December 2018, replacing the former section 249. The elements remain the same: the Crown must prove (1) that the accused operated a motor vehicle, and (2) that the manner of driving was objectively dangerous to the public, considering all the circumstances including the nature, condition, and use of the road, and the amount of traffic that was or could reasonably be expected at that time and place.
The Supreme Court of Canada established the governing test in R v. Roy, 2012 SCC 26. The Court held that a marked departure from the standard of care that a reasonably prudent driver would exercise in the circumstances is required. A simple departure from the standard — an ordinary lapse of attention, a momentary error of judgment — is not enough. The driving must represent a marked departure from what a reasonable person would do.
This is the critical distinction. Not every bad driving decision is dangerous driving. The Supreme Court made this clear in R v. Beatty, 2008 SCC 5, holding that the actus reus requires driving that is objectively dangerous, and the mens rea requires a marked departure from the standard of a reasonably prudent driver. A momentary loss of attention, without more, does not meet this threshold.
Dangerous Driving Variants: Simple, Bodily Harm, and Death
Section 320.13 creates three levels of dangerous driving, each with escalating maximum penalties:
| Offence | Section | Max (Indictment) | Mandatory Min | Typical First-Offence Range |
|---|---|---|---|---|
| Dangerous operation | 320.13(1) | 10 years | None | Fine, probation, or short custody; driving prohibition |
| Dangerous operation causing bodily harm | 320.13(2) | 14 years | None | Conditional sentence to 2–4 years custody |
| Dangerous operation causing death | 320.13(3) | Life imprisonment | None | 3–6+ years custody |
All three variants are hybrid offences — the Crown can proceed by indictment or summary conviction. For summary conviction, the maximum is two years less a day for each. In practice, dangerous driving causing bodily harm and causing death are almost always prosecuted by indictment because of the seriousness of the consequences.
Dangerous Driving Causing Bodily Harm
Under section 320.13(2), the Crown must prove the same elements as simple dangerous driving — a marked departure from the standard of a reasonably prudent driver — plus the additional element that the dangerous driving caused bodily harm to another person.
“Bodily harm” is defined in section 2 of the Criminal Code as any hurt or injury that interferes with the health or comfort of a person and is more than merely transient or trifling. This includes broken bones, concussions, lacerations requiring stitches, and any injury that requires medical treatment.
The Crown must also prove causation — that the dangerous driving, not some other factor, caused the bodily harm. In multi-vehicle collisions, this can be a contested issue. If the other driver contributed to the collision, or if the injuries were caused by a mechanical failure rather than the manner of driving, the causation element may not be made out.
Sentences for dangerous driving causing bodily harm vary widely. First offenders with no prior record may receive a conditional sentence (house arrest) or a short custodial sentence. Where the injuries are severe, the speed was extreme, or alcohol was involved, longer periods of incarceration are imposed.
Dangerous Driving Causing Death
Section 320.13(3) is one of the most serious driving offences in the Criminal Code. The maximum sentence is life imprisonment. While there is no mandatory minimum, courts impose significant penitentiary sentences that reflect the catastrophic consequences of the offence.
The Crown must prove the same marked departure standard as simple dangerous driving, plus that the dangerous driving caused the death of another person. Causation is often the central issue at trial — the Crown must establish beyond a reasonable doubt that the manner of driving, not some intervening cause, resulted in the death.
Sentencing ranges for dangerous driving causing death generally start at three to four years for first offenders and increase substantially where aggravating factors are present — alcohol or drug impairment, extreme speed, racing, fleeing police, or prior driving convictions. The Ontario Court of Appeal has held that denunciation and deterrence are the primary sentencing objectives in these cases.
Dangerous Driving vs. Careless Driving
This distinction is one of the most important in Ontario driving law. Dangerous driving under section 320.13 of the Criminal Code is a criminal offence. Careless driving under section 130 of the Highway Traffic Act is a provincial offence. The consequences are fundamentally different.
| Dangerous Driving (s. 320.13) | Careless Driving (HTA s. 130) | |
|---|---|---|
| Type of offence | Criminal (Criminal Code) | Provincial (Highway Traffic Act) |
| Legal standard | Marked departure from a reasonable driver | Without due care and attention |
| Criminal record | Yes | No |
| Maximum penalty | 10 years (simple); life (causing death) | $2,000 fine + 6 months jail |
| Driving prohibition | Mandatory (1–3+ years) | Possible suspension (up to 2 years) |
| US travel impact | Inadmissible (criminal conviction) | Generally none |
| Demerit points | 6 points | 6 points |
The legal standard is the key difference. Careless driving captures a broader range of driving behaviour — any driving without due care and attention. Dangerous driving requires something more: a marked departure from the standard of a reasonably prudent driver. This means there is a range of bad driving that is careless but not dangerous — and that range is exactly where defence lawyers negotiate. For more on how criminal charges can be reduced to careless driving, see our dedicated guide.
Penalties and Sentencing
Dangerous driving is a hybrid offence. When the Crown proceeds by summary conviction, the maximum sentence for all variants is two years less a day imprisonment. When the Crown proceeds by indictment, the maximum depends on the variant:
- Simple dangerous operation (s. 320.13(1)): Maximum 10 years
- Causing bodily harm (s. 320.13(2)): Maximum 14 years
- Causing death (s. 320.13(3)): Maximum life imprisonment
There are no mandatory minimum sentences for dangerous driving offences, unlike impaired driving, which carries a mandatory minimum $1,000 fine for a first offence. This means the full range of sentencing options is available to the court, including discharges (for simple dangerous driving without injury), suspended sentences, fines, conditional sentences, and custodial sentences.
A driving prohibition is mandatory on conviction. Under section 320.24, the court must impose a driving prohibition of at least one year for a first offence, two years for a second, and three years for a third or subsequent offence. The prohibition runs from the date of sentencing and is in addition to any other sentence imposed.
Aggravating factors that increase the sentence include: excessive speed, alcohol or drug impairment, racing or stunt driving, fleeing from police, driving in a school zone or residential area, prior driving convictions, and the severity of injuries or loss of life.
Common Defences
Dangerous driving charges are defended by attacking the Crown’s ability to prove the essential elements of the offence: that the driving was objectively dangerous and that it represented a marked departure from the standard of a reasonable driver.
Not a marked departure. The central defence in most dangerous driving cases is that the driving, while perhaps imperfect, did not rise to the level of a marked departure from the standard of care. As the Supreme Court held in Roy and Beatty, a momentary lapse of attention, a single error of judgment, or an ordinary driving mistake is not enough. The defence argues that what happened was closer to careless driving than dangerous driving — and therefore does not meet the criminal threshold.
Mechanical failure or road conditions. If the dangerous driving was caused by a sudden mechanical failure (brake failure, tire blowout, steering malfunction) or unexpected road conditions (black ice, debris, sudden obstruction), the accused may not have departed from the standard of care at all. The Crown must prove that the manner of driving was dangerous, not that the outcome was dangerous.
Medical emergency. A sudden medical event — a seizure, a heart attack, a loss of consciousness — that was not reasonably foreseeable can negate the mens rea of the offence. If the accused had no reason to know they were at risk of a medical episode while driving, they did not voluntarily depart from the standard of care.
Causation. In cases involving bodily harm or death, the Crown must prove that the dangerous driving caused the harm. If the other driver’s actions, a third party’s conduct, or an unrelated event contributed to or caused the collision, the causation element may not be established beyond a reasonable doubt.
Identity. In hit-and-run scenarios or cases involving multiple vehicles, the Crown must prove that the accused was the driver. Circumstantial evidence such as vehicle registration, DNA, or surveillance footage may be challenged.
Charter violations. If the police obtained evidence in violation of the accused’s Charter rights — an unlawful search of the vehicle under section 8, a failure to provide the right to counsel under section 10(b), or an arbitrary detention under section 9 — the evidence may be excluded under section 24(2). For more on police searches of vehicles, see our dedicated guide.
How Dangerous Driving Charges Are Investigated
Dangerous driving investigations differ from other criminal matters because of the physical evidence involved. When a collision occurs, the police typically:
- Secure the scene. Traffic collision investigators attend, photograph the scene, measure skid marks, note road conditions, and document the positions of the vehicles. In serious cases, the road may be closed for hours while evidence is collected.
- Interview witnesses. Other drivers, passengers, and bystanders are interviewed. Their accounts of speed, lane changes, traffic signals, and the moments before the collision are recorded.
- Obtain surveillance footage. Dashcam footage from surrounding vehicles, traffic cameras, and nearby business or residential security cameras are seized.
- Accident reconstruction. In cases involving serious injury or death, a collision reconstructionist analyzes the physical evidence to determine vehicle speeds, points of impact, and the sequence of events. These reports are often central to the Crown’s case — and are frequently challenged by defence experts.
- Toxicology and impairment. If alcohol or drug impairment is suspected, the police will demand a breath sample or blood sample. A positive result can lead to additional impaired driving charges alongside the dangerous driving charge.
- Vehicle inspection. The vehicle may be seized and inspected for mechanical defects that could have contributed to the collision — brake condition, tire tread, steering components, and electronic systems.
Defence counsel must scrutinize every step of this investigation. Accident reconstruction is not infallible — it relies on assumptions about friction coefficients, driver reaction times, and physical evidence that may be incomplete or degraded. Witness accounts are notoriously unreliable, particularly regarding speed estimates. And experienced driving offence lawyers know how to challenge the methodologies and conclusions of the Crown’s experts.
How We Defend Dangerous Driving Cases
RH Criminal Defence defends dangerous driving charges at courthouses across the GTA, including Old City Hall and 2201 Finch Court in Toronto, Brampton, Newmarket, and Oshawa. The approach in every case starts with the evidence:
- Full disclosure review. Every police report, witness statement, accident reconstruction report, medical record, and piece of physical evidence is reviewed in detail. Weaknesses in the Crown’s case — inconsistent witness accounts, gaps in the reconstruction, Charter violations during the investigation — are identified and documented.
- Expert retention. Where the facts warrant it, the defence retains its own accident reconstruction expert, toxicologist, or mechanical engineer to provide an independent analysis. A defence expert’s opinion can undermine the Crown’s theory of the case and create reasonable doubt.
- Negotiation. In cases where a full acquittal is not realistic, defence counsel negotiate with the Crown for a reduced charge — typically careless driving under the Highway Traffic Act, which avoids a criminal record entirely. This is a common and highly favourable resolution for dangerous driving charges that fall on the borderline between criminal and provincial.
- Trial. When the case cannot be resolved and the defence is strong, the matter proceeds to trial. The defence challenges the Crown’s evidence on every element: the standard of care, the marked departure, causation (in bodily harm and death cases), and the admissibility of evidence obtained in potential violation of the Charter.
For a thorough overview of all driving offences we defend, see our driving offences defence page.