Which statement best reflects the standard of proof for unfitness to drive due to alcohol or drugs?

• A. A chemical analysis is always required
• B. A mere belief is enough
• C. It is sufficient to prove impairment, with doctors' opinions and officers' observations important
• D. Only a breath test is admissible

Answer: (C)

Unfitness to drive due to alcohol or drugs is shown by proving impairment rather than relying solely on a chemical reading. If the evidence demonstrates the person is impaired and cannot drive safely, that can establish unfitness. Doctors’ opinions about the level of cognitive or motor impairment are valuable, and officers’ observations of behaviour, breath or gait, balance, speech, and coordination provide strong support. A chemical analysis can help, but it isn’t required in every case, and a breath test is not the only admissible method. In essence, impairment itself is the key, with professional and observational evidence playing important supporting roles.