By Cristin Schmitz ( November 14, 2025, 7:15 PM EST) -- Ruling 8-1 on the Criminal Code’s evidentiary requirements for impaired driving convictions, the Supreme Court of Canada has clarified that (1) the Crown does not have to prove at trial (but must disclose to the defence) the target value used in a breath test for alcohol and (2) the Crown can rely on a certificate from a qualified technician who administered the breath test to prove the breath machine was properly calibrated....