There is a bunch of stuff about
this on the internet..
EXAMPLE: California’s Health & Safety Code [Section 103900] requires physicians to submit a confidential report to the county health department when an individual is diagnosed as having Alzheimer's disease or related disorders, including dementia, severe enough to impair a person's ability to operate a motor vehicle.
/www.caregiver.org/dementia-driving-and-california-state-law