Even if it's just an eyesight test? I have spent the past week in the company of my mother and one of her friends, both 80, and both absolutely atrocious drivers. My mother has a cataract in one eye and cannot see properly. Despite this, she drives everywhere too fast, in the wrong gear, goes through red lights, forgets she is in reverse and shoots backwards into bollards and other people's cars, and stalls the car all the time when she stops and starts again. She drives too close to the side of the road and keeps clipping the kerb or mounting it. The 30 mile an hour speed limit through the village does not apply to her, it is "silly" to have to drive so slowly. I have told her that she should not be driving until she has her cataract fixed, and is probably not insured to drive until it is done. Her response was "Oh I never drive very far."
Her friend is the opposite - very nervous and very slow. She drove me to the station (about 2 miles), and we didn't get out of second gear or above 20 mph all the way there. She stops at traffic lights when they are green "because they might change suddenly".
I spoke to my Mum's doctor informally a couple of years ago about my concerns, but she was more concerned with my mother keeping her independence than her danger to other road users, and just said "oh she shouldn't really be driving while she's waiting to get her cataracts done", but didn't come right out and tell my mother not to drive until after the operation.
AIBU to think that they are an accident waiting to happen? (And don't get me started on her friends' attitude to drinking and driving - "Oh it's only white wine, and I haven't got far to go." Yes, it is white wine, and you are on your second bottle...)