On a prosecution under s.49(1)(f) of the Road Safety Act 1986 (Vic), once the accused gives notice under s.58(2), the breath analysis certificate is evidence only of its contents — not prima facie evidence of all matters in s.58(2) including proper operation of the instrument. However, proper operation of the instrument is a matter of defence under s.49(4), not part of the prosecution case. Compliance with s.55(4) is irrelevant on a prosecution under s.49(1)(f) because that provision relates only to evidence of actual blood alcohol concentration, not the machine's indicated result which is the criterion of criminality under s.49(1)(f).
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