I think it's a very serious matter. In fact, it's known that it's a serious matter when you take some communications that you were supposed to have.
Today, with all the cars on the road, it is very easy to get into an accident, never mind if you have a problem driving.
As we get older, everything slows down. The ability to hit the brake in a panic stop is going to slow down, and the ability to swerve if a car cuts over.
It was the guy's fault. He had a stop sign and he failed to yield. Never saw them coming.