77Medical condition or treatment affecting driving ability

77 Medical condition or treatment affecting driving ability (1) A person must not drive a motor vehicle on a road or road related area if the person’s ability to drive safely is impaired by— (a) an illness, injury or incapacity suffered by the person; or (b) the effects on the person of treatment for any illness, injury or incapacity suffered by the person. (2) If a person who is the holder of a driver licence suffers any permanent or long-term illness, injury or incapacity that may impair his or her ability to drive safely, the person must tell the road transport authority as soon as practicable (but within 7 days). (3) It is a defence to the prosecution of a person for an offence against this section if the person establishes— (a) that the person was unaware that his or her ability to drive safely had been impaired; or (b) that the person had another reasonable excuse for contravening the subsection.