My exFIL has, at last, had a ROSPA driving assessment, 2 years after I asked him to give up driving.
He was marked over 30 or so criteria on a scale of: excellent, good, acceptable; not acceptable.
His overall score was Good (!), with a recommendation to do a refresher course. The things he got 'reasonable' for were things like road awareness, consideration of others, hazard perception, lane discipline. The things he was excellent at were reversing round a corner and slow manoeuvres.
The summary at the end suggested that the tempo of his driving was such that some people may not have the patience to wait for him. he perceives this as 'the world is more aggressive than 5 years ago'. I perceive this as ; 'you get beeped because you are a danger to yourself and others'.
But...If I was behind a learner or provisional driver at a roundabout, I would have an expectation that they wouldn't pull away easily, or might cause another driver to brake, or that there may be some lane drift, so I'd give them a wide berth. I think that there should be some kind of 'getting older' sticker; not to stigmatize those who are getting older, but just as a heads up that their speed perception or reactions may not be as good as others: basically a 'bear with me for 10 secs' badge.
Does this seem like a good idea?