Its an impossible question to answer.

We all know how different we are - my Mum in Law is 91, and although she doesn't drive, she's alert and reasonably agile.

On the other hand, my own mother (who lived to be 100) was senile at 80 but continued to drive until we told her a HUGE lie when she was 90 and said her car had failed its MOT and couldn't be repaired.

I always felt it was a terrible thing to do to her (and I hope no-one ever has to do it to me) but it was the only way we could think of to keep her off the roads.  She insisted she was perfectly safe as she'd been driving since she was 17 (no test in those days) but she had malecular degeneration of the eye and couldn't see the telly from 4ft away, her colour sight was almost non-existant poor soul, and she was profoundly deaf (not a lot going for her was there?) - and we deprived her of driving!!!

We did run her about ourselves, but its not the same is it.

I often wonder if we did the right thing....................................DBarb