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DUI Refusing a Breathalyzer Test

Refusing a Breathalyzer Test: 5 Legal Defenses Explained

A breathalyzer test refusal is a serious DUI criminal charge, but understanding your legal options is crucial. We regularly see cases where specific legal defences can significantly impact the outcome of a breathalyzer refusal charge. Let’s examine five powerful defences that could help fight this charge.

1. The Invalid Demand Defence

Many people are unaware that police officers must follow specific protocols when requesting a breath sample. The law requires what’s called a “clear and unequivocal demand.” This isn’t just legal jargon – it’s a crucial distinction that could affect your case.

For instance, there’s a significant legal difference between an officer asking, “Would you like to take a breath test?” and stating, “I demand you provide a breath sample.” This subtle distinction has led to dismissed cases when officers phrase their request as a question rather than a proper demand. The law requires absolute clarity, and any ambiguity could work in your favour.

Refusing a Breathalyzer Test

2. Charter Violations Defence

Your Charter rights provide essential legal protections, and any violation of these rights could potentially lead to a successful defence. Here are key Charter considerations in breathalyzer refusal cases:

  • Right to legal counsel at the police station (though this doesn’t apply to roadside testing)
  • Lawfulness of detention
  • Reasonable grounds for breath sample demand
  • Timing and potential unreasonable delays

Any breach of these rights could result in your case being thrown out.

3. The Reasonable Excuse Defence

Perhaps the most misunderstood defence is the concept of a “reasonable excuse.” Contrary to popular belief, you don’t need to prove your excuse beyond all doubt. The legal standard only requires raising what’s called an “air of reality.”

Several conditions might qualify as reasonable excuses:

  • Medical conditions such as asthma or COPD
  • Physical limitations like broken ribs
  • Severe anxiety
  • Age-related difficulties

Once you present a reasonable excuse, the burden shifts to the Crown to disprove it beyond a reasonable doubt.

4. Problems with the Device

Technical issues with breathalyzer devices can provide a strong defence. These sophisticated instruments require the following:

  • Regular maintenance
  • Proper calibration
  • Correct setup procedures

Any technical failures in these areas could potentially invalidate the refusal charge. Device maintenance records and calibration data can be crucial evidence for this defence.

5. The Mouth Alcohol Defence

The timing of your last drink can significantly impact breathalyzer results. If you consumed alcohol within 15 minutes of the test, this could affect the validity of the demand. Police officers should observe a waiting period before demanding a breath sample, mainly if they know you’ve just left a bar. This waiting period isn’t just a procedural formality – it’s essential for accurate results.

Conclusion

Breathalyzer refusal cases are more complex than they might initially appear. While these five defences can be powerful tools in fighting a refusal charge, their effectiveness depends largely on proper legal expertise and application.

If you’re facing a breathalyzer refusal charge, seeking professional legal counsel who can evaluate your situation and determine which defences might apply to your case is crucial.

What is the 'Invalid Demand' defence in a breathalyzer refusal case?

The 'Invalid Demand' defence challenges whether the officer made a clear and unequivocal demand for a breath sample, as required by law. Ambiguity in their request could lead to a dismissal.

Can a medical condition be used as a defence for breathalyzer refusal?

Yes, conditions such as asthma, COPD, or physical injuries may qualify as a 'reasonable excuse' for refusal. The Crown must then disprove your excuse beyond a reasonable doubt.

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Dan Joffe, lawyer, partner Nextlaw Ontario

My team uses forensic analysis to determine whether your Charter rights were violated. If you have been charged with DUI, book a free call that can change everything

Do you want to avoid a DUI Charge?

My team uses forensic analysis to determine whether your Charter rights were violated. If you have been charged with DUI, book a free call that can change everything

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About Dan Joffe, Partner

Daniel holds a JD (LLB) / MBA from Osgoode Hall Law School & the Schulich School of Business at York University, Toronto. Dan is a licensed lawyer in the Province of Ontario.

The Ontario DUI Arrest Testβ„’

The 60-Second Ontario DUI Arrest Test assesses the nature of the arrest in order to determine if your charges may get withdrawn.

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Next Law publishes these articles and videos as a service to our website visitors for general informational purposes only. These materials do not, and are not, intended to, constitute legal advice. You should not act upon any such information without seeking professional counsel.