91-year-old with undiagnosed dementia caused fatal accident; inquiry calls for mandatory cognitive testing for drivers over 80.

A Scottish safety inquiry has concluded that 91-year-old Edith Duncan, who had undiagnosed frontotemporal dementia, should not have been driving when she caused a fatal accident, killing a toddler. The inquiry highlighted flaws in the self-certification system for drivers over 70 and recommended mandatory cognitive testing for drivers over 80. The judge emphasized the need for regulatory changes to prevent similar tragedies in the future.