HOW COURTS DECIDE
How Courts Decide Traffic Cases in NSW
Traffic offences represent a significant proportion of criminal matters before NSW Local Courts. While often perceived as less serious than other criminal charges, traffic offences can carry severe consequences including imprisonment, lengthy licence disqualification, and permanent criminal records that affect employment and travel.
What the Prosecution Must Prove
Drink Driving (Low Range PCA)
Road Transport Act 2013 (NSW), s 110(1)
- The accused was driving or attempting to drive a motor vehicle on a road or road-related area
- The prescribed concentration of alcohol in the accused's blood or breath was present
- The breath analysis or blood test was conducted in accordance with the statutory requirements
PCA Ranges
- Low range: 0.05 to less than 0.08
- Mid range: 0.08 to less than 0.15
- High range: 0.15 and above
- Special range (P-platers, learners): 0.00
Drive Whilst Disqualified or Suspended
Road Transport Act 2013 (NSW), s 54
- The accused drove a motor vehicle on a road or road-related area
- The accused's licence was disqualified, suspended, or cancelled at the time
- The accused knew, or ought reasonably to have known, of the disqualification or suspension
Dangerous Driving
Crimes Act 1900 (NSW), s 52A
- The accused was driving a motor vehicle
- The driving was dangerous to another person or persons
- The dangerous driving occasioned death or grievous bodily harm (for aggravated charges)
Negligent Driving
Road Transport Act 2013 (NSW), s 117
- The accused drove a motor vehicle on a road
- The driving was negligent (departed from the standard of a reasonable and prudent driver)
- The negligent driving occasioned death or grievous bodily harm (for aggravated charges)
Police Pursuit / Skye's Law
Crimes Act 1900 (NSW), s 51B
- A police officer was pursuing the accused's vehicle or signalled the accused to stop
- The accused knew or ought reasonably to have known that police were in pursuit
- The accused drove recklessly, or at speed, or in a dangerous manner to evade police
Where These Cases Commonly Fail
Analysed through the CORE Defence Evidence Continuum™, traffic prosecutions can fail at several stages:
Collection Stage
Procedural requirements for breath testing and blood analysis are strictly enforced.
- Breath analysis device not operated in accordance with statutory requirements
- Failure to observe mandatory 15-minute observation period before breath test
- Blood sample not taken by qualified medical practitioner within 2 hours
- Random breath test conducted outside lawful authority
Interpretation Stage
Even where evidence exists, the meaning may be contested.
- Whether driving was "dangerous" or merely careless (a question of degree)
- Whether the accused was "driving" (issues of vehicle operation, stationary vehicles)
- Whether the location was a "road or road-related area" (private property, car parks)
Admissibility Stage
Strict statutory requirements create admissibility challenges.
- Breath analysis certificate not in prescribed form
- Failure to serve certificate of analysis within required timeframe
- Section 138 exclusion where procedural requirements were breached
Weight Stage
Even admissible evidence may not carry sufficient weight.
- Identity of driver not established beyond reasonable doubt (vehicle observed but driver not identified)
- Knowledge of disqualification not proved (notice not served, incorrect address)
- Causation not established in dangerous driving matters (intervening acts)
Drink Driving: Detailed Analysis
PCA offences are among the most commonly charged traffic matters. The prosecution case typically relies on the certificate of breath analysis, but there are established lines of challenge.
The "Two-Hour Rule"
The breath analysis or blood test must be conducted within two hours of the person last driving. If this requirement is not met, the statutory presumption that the reading reflects blood alcohol concentration at the time of driving does not apply. The prosecution must then prove through expert evidence what the person's BAC was at the time of driving.
The "Rising Blood Alcohol" Defence
Where a person consumed alcohol shortly before driving, it is possible that their BAC was below the limit at the time of driving but rose above it by the time of the breath analysis. This requires expert pharmacological evidence to establish the rate of absorption.
The "Honest and Reasonable Mistake" Defence
For offences of strict liability (such as PCA), the defence of honest and reasonable mistake of fact is available. If the accused genuinely and reasonably believed they were under the limit (for example, based on time elapsed since last drink, amount consumed, and food eaten), this may provide a defence.
Licence Disqualification
Many traffic offences carry mandatory minimum disqualification periods. However, courts have discretion in certain circumstances:
Disqualification Periods (PCA Offences - First Offence)
Section 10 and Traffic Offences
A Section 10 dismissal avoids both conviction and the mandatory disqualification period. For first-time, low-range offenders with strong subjective cases, Section 10 remains the primary sentencing objective. The court considers the person's character, the trivial nature of the offence, and the disproportionate consequences of conviction.
Interlock Orders
For mid-range and high-range PCA offences and second or subsequent offences, the court must make an interlock order unless it is satisfied that there are grounds for exemption. An interlock order requires the installation of an alcohol interlock device on the offender's vehicle for a specified period following the disqualification.
The mandatory interlock program periods are: 12 months for mid-range PCA first offence; 24 months for high-range PCA first offence; and 48 months for subsequent offences. Exemption may be sought where the offender does not own a vehicle, cannot afford the device, or has a medical condition preventing use.
Strategic Defence Considerations
Procedural Challenges
Detailed examination of breath testing procedures, LEPRA compliance, and statutory requirements. Even minor procedural failures may render the breath analysis certificate inadmissible.
Section 10 Applications
For first offenders with low readings and strong subjective cases, preparing comprehensive material for a Section 10 application: character references, employment evidence, traffic offender program completion.
Expert Evidence
Engaging pharmacological experts for rising blood alcohol defences, or accident reconstruction experts for dangerous driving matters.
Minimising Disqualification
Where conviction is unavoidable, structuring submissions to minimise the disqualification period by demonstrating reliance on licence for employment, family responsibilities, and rehabilitation.
Judicial Reasoning in Practice
"The road toll is a matter of significant public concern. The community is entitled to expect that courts will impose sentences that adequately deter drink driving. However, the sentence must remain proportionate to the actual offence."
Judicial sentencing remarks, NSW Local Court
Traffic offences attract strong emphasis on general deterrence. Courts consistently recognise that drink driving and dangerous driving pose serious risks to public safety, and sentences must reflect the need to deter both the offender and others from similar conduct.
However, courts also recognise that traffic offenders are often otherwise law-abiding members of the community. First offenders with low readings, genuine remorse, and strong subjective cases may receive non-conviction outcomes where the circumstances warrant it.
For more serious offences (high range PCA, dangerous driving occasioning death or GBH, police pursuit), full-time imprisonment is regularly imposed. The objective seriousness of these offences typically outweighs even strong subjective cases, though the length of sentence and conditions of any custodial order remain within the court's discretion.