When my dad started getting dementia his driving started getting somewhat uncertain and people were honking at him for sitting at a green light for a microsecond longer than he had to, or signaling a turn and then realizing he needed to turn a block later and going straight. People used to swear at him and give him the finger and he was just a confused old man trying to get to his son's house and not really understanding what the problem was.
Anyway we finally convinced the doctor to take his license away and I think in a way he was relieved that he didn't need to drive any more. And so were we, we tried to get him to stop driving for years before that.