Zoneff v The Queen

Zoneff (the appellant) appealed to the High Court of Australia against his conviction for the offence of driving a motor vehicle whilst under the influence of alcohol. The appeal concerned the admissibility of evidence obtained from a breath analysis.

The central legal issue before the High Court was whether the breath analysis evidence was admissible, given that the appellant had not been cautioned in accordance with section 80 of the *Road Safety Act 1986* (Vic) prior to the breath test being administered. Specifically, the Court had to determine if the failure to provide the caution rendered the subsequent breath analysis evidence inadmissible.

The High Court, comprising Gummow and Hayne JJ, held that the caution required by section 80 of the *Road Safety Act 1986* (Vic) was a prerequisite to the lawful administration of a breath test. Their Honours reasoned that the purpose of the caution was to inform the driver of their rights and the consequences of refusing the test. Without this caution, the subsequent breath analysis was not conducted in accordance with the statutory requirements, and therefore the evidence obtained was inadmissible. The appeal was allowed, and the conviction was quashed.