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Canada’s breathalyzer evidence rules upheld in court, despite charter challenge

The Supreme Court of Canada is upholding procedures that permit shortcuts in allowing a motorist’s breathalyzer sample into evidence — even in cases where taking the sample may have been unlawful.

In a decision Thursday, the court is affirming the existing charter process for challenging police actions in obtaining a sample.

READ MORE: Proposed roadside alcohol testing rules could violate Charter rights: advocate

The high court’s 5-4 ruling comes in the case of Dion Henry Alex, who was stopped by police in Penticton, B.C., in April 2012.

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Alex failed a roadside test and was taken to the police detachment, where he blew above the legal blood alcohol limit in two subsequent tests.

At issue was the continuing relevance of a 1976 Supreme Court decision that said the Crown did not need to prove the demand for a breath test was lawful in order to rely on evidentiary shortcuts about the accuracy of test readings.

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READ MORE: Breathalyzer machines in Ontario being questioned after court ruling

Following introduction of the Charter of Rights and Freedoms in the 1980s, the courts said that an argument a breath sample was obtained unlawfully must come in the form of a charter challenge against unreasonable search and seizure.

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