Blood-Alcohol Level and The Presumption of Identity
Section 258(1)(c)(ii) of the Criminal Code is part of the scheme to ease proof of the concentration of alcohol in the accused’s blood for, among other things, proving the “over 80” offence in section 253(b). It provides the prosecution with an evidentiary short cut of sorts. By putting the certificate of qualified technician into evidence, the prosecution is able to rely upon the breathalyzer test results as proof of an accused’s blood-alcohol level at the time of the offence, without the burden of calling further evidence on the point if the following preconditions are met: • the breath samples were taken pursuant to a valid demand and in accordance with section 254(3); • each breath sample was taken “as soon as practicable” after the time when the offence was alleged to have been committed [the question to be asked is whether the police acted reasonably in circ...