Both my Father and my Uncle became profoundly deaf in their latter years. They drove safely-ish, but couldn't hear emergency vehicles coming up behind them, and perhaps more dangerously couldn't hear if their indicators were on. With advancing years, diminishing eyesight ruled-out night driving, and restricted neck movement made emerging from junctions very hazardous. I have noticed the same thing in the past year or so, the trick will be to know when to stop driving. Hopefully not just yet.
