Another resident in the village where I live did his biannual test
recently and passed for an unrestricted licence, no specticals required
and he is 95. His parking place a garage, is awkward to enter but he
manages ok.
He tells me that he is more cautious these days and one day he gave me
a lift to the shopping centre and his driving seemed perfectly normal.
It really is horses for courses.

Hi Bezza,

There is always exceptions to the rule, your 95 year old is an example. When people sit for a driving test, they don't always display their usual driving habits, for example the hoon driver doesn't do burn-outs with the examiner sitting next to him. The test may not be a real indication of a persons actual normal driving.

This happened near where I live, I drive under this 1.9m bridge almost everyday. Just as some are too old to drive, others may well be too young. Driving on our roads is a big responsibility, and I don't think enough people take that responsibility seriously enough.

http://www.dailymail.co.uk/news/article-14914421/Brisbane-car-crash-teenager-wynnum-tribute-gofundme.html