Division 13.1 Driving licences shall not be issued to, or renewed for, applicants or drivers who suffer from:

• severe mental disturbance, whether congenital or due to disease, trauma or neurosurgical operations,

• severe mental retardation,

• severe behavioural problems due to ageing; or personality defects leading to seriously impaired judgment, behaviour or adaptability,

unless their application is supported by authorised medical opinion and, if necessary, subject to regular medical check-ups.