both my grandparents gave up their licenses over the last couple months. it was tough on them, but man do i feel better. their reaction time was getting too slow, the physicality of it was too much and both (grandpa especially) were starting to have their minds wander to things going on at the side of the road and such...
overall, there are some tests and such for the elderly, but almost all that i know of who went, passed... unlike all 16 year olds for their tests. i don't know if even the testers have it in them to take away the license... my grandpa would tell me about driving a bren gun carrier and how he can drive anything... i would have to correct him, that he "could" drive anything... he also could drive a golf ball, run 5km, drink like a fish and stay up past 9.
it was mentioned in the article that the stats are misleading due to older drivers being in the city and driving less... all it means is that their is a way higher % that they will get into an accident every time they get behind the wheel... also, so many of the little fender benders are so avoidable to a "normal" driver... while people aren't getting hurt, it is so wasteful in both time and resources for these avoidable accidents.
again... ymmv... but yeah.