As we get older, we lose more and more of our independence so I dont want a specific age ban, but mandatory retesting should be in place from a given age - probably 70yo.
Driving tests today are more difficult to pass than years ago, so anyone over 70 passing them should be good for 5 years, then a retest again.
in addition, new cars are so much more capable of assisting drivers, so the older we get, the requirement to have specific features in a car are also something that should be mandated eg lane departure, automatic pedestrian braking etc. If she was driving a tesla, for example, that accident probably would have been avoided. Even out in my sons 1 Yr old cupra the other day, the car infront did an emergency stop and his car followed suit. Technology can't be 100% relied upon, but if it keeps people driving safely for longer, I'm all for it.
And all thse unlicensed drivers need really stiff sentences, I see so many people who are incapable of steering, staying in lane and taking off smoothly it's untrue. They are a real menace to society.