Ralph v Police

In *Ralph v Police*, the High Court of Australia considered an appeal from a decision of the Supreme Court of Tasmania. The appellant, Ralph, had been convicted of an offence under the *Traffic (General and Local) Regulations 1953* (Tas). The central dispute concerned the admissibility of evidence obtained through a breath analysis.

The primary legal issue before the High Court was whether the breath analysis evidence was admissible in circumstances where the police officer administering the test had failed to comply with a specific requirement of the relevant legislation. Specifically, the question was whether the failure to provide the appellant with a copy of the breath analysis certificate immediately after the test rendered the certificate and the evidence derived from it inadmissible.

Hayne J, delivering the judgment of the Court, held that the failure to provide the certificate immediately did not render the evidence inadmissible. His Honour reasoned that the legislative provision requiring the certificate to be provided was directory, not mandatory. The purpose of the provision was to inform the accused of the result of the analysis, and this purpose was ultimately fulfilled even if the certificate was not provided at the precise moment stipulated. The Court applied the principle that substantial compliance with statutory requirements is sufficient where the object of the provision has been met and no prejudice has been occasioned to the accused.

The appeal was dismissed.