In Switzerland we do it all. After 75 there is requirement for periodic health check by doctor which consists of various mental checks and eyesight. I would put it at 70, everybody degrades with age at different pace, some lose it even before 50 (ie sclerosis or parkinson) but cca 70 is an age I can see clear mental decline in every person I ever interacted closely.

Wife is a GP and she regularly faces this at her work. I begged her numerous times to take away those licenses without mercy if the person is unfit, no amount of pleading, begging, crying of threats should change that. And they do it all, oh so much - to the point she is giving up this revenue stream, too much emotional burden (from somebody who sometimes has to tell patients they have ie cancer).

Why so harsh - we live in more rural place with tons of old folks. They are properly dangerous behind the wheel - they can't handle any sudden situation, heavy traffic is a challenge at best, they need to drive at absolute minimum speed at bright daylight to handle situations.

Its tough, they live their whole lives in the middle of nowhere, too stubborn to sell and move someplace more reasonable and without a car they can't easily take care of themselves in their remote places (but its 2026 we have ubers, taxis and home deliveries, and once further down the road good social housings for elderly). Often, they know old but still working doctors who turn the blind eye because they are old buddies and then its sometimes sad news.

When they handle 1.5 tonne of steel that accelerates fast and easily kills others, very easily it stops being primarily about them but about rest of society. When you see them barely managing driving around local primary school, its either them or us/our kids