"Younger drivers are the biggest killers on the roads by a huge margin."

I would guess that's true, mostly because younger drivers are faster drivers, and the spped of impact sure does have an affect on the severity of the crash. Older folks are likely to drive a bit slower.

There also should be a differentiation made between the types of accidents. By far, I see more young and middle-aged people in car rollovers and bad MVCs than I do older people. Another thing to consider is this: older people do not fare well in accidents. This is because of various things associated with aging: bone density being lsee and the bones breaking more easily; other existing conditions exacerbated by the injuries sustained in the MVC.

I know many 'old' people who are excellent drivers. I know some young ones who aren't. I do think that when people are no longer reliable behind the wheel, they SHOULD be taken off the road. That goes for those who drink, people who have lots of accidents that they cause, etc. There is nothing wrong with asking people to verify their competency to drive--and if night driving is a hazard, then they should be restricted to daylight hours. Most of this stuff is a no-brainer.

The hellish difficulty, IMO, is finding reliable statistics that differentiate accident rates amongst age groups. Until people can look at those stats, it's all just matter of opinion and "I know someone who . . .". Not really helpful stuff to do with the premise of this thread.