You can say that "drunk driving is solved" if you speak from the point of view of the driver, because of course one can avoid it. But that's not too relevant.

You can say that "drunk driving is solved" if you speak from the point of view of the driver, because of course one can avoid it. But that's not too relevant. Getting killed by a drunk driver (which is actually the real problem) is far from solved. It's something that can happen to anyone.