Edmonton and Calgary police sought leave to intervene in Crown appeal. Impaired driving cases. Issue on appeal being whether historical maintenance records relating to approved instruments are presumptively relevant and subject to first party disclosure.

Held: Application denied.

Intervener status to be granted where: (1) applicant is directly and significantly affected by the outcome of the case; (2) has expertise and a fresh perspective (ie, is useful for the appeal’s resolution). Second branch of test not met. Police not adding a fresh perspective from the Crown. Further, to grant intervener status would prejudice the accused, as further delay would result.

Multiple Counsel