In culpable driving prosecutions alleging negligence through fatigue, evidence of drug use is irrelevant unless expert evidence establishes a causal link between the drug ingestion and the driving impairment. Evidence of habitual drug use tendered to prove drug use on a particular occasion is tendency evidence requiring compliance with s 97(1) of the Evidence Act 2008 (Vic). The failure of defence counsel to object to inadmissible evidence does not preclude an appellant from relying on the resulting miscarriage of justice on appeal, provided the failure cannot be characterised as a rational tactical decision.
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