The primitive shouldn't be driving, period.
If my being deaf affected my competence at doing something that might put others at risk (in her case, other cars, other people), then I just wouldn't do that thing. And it's happened before. It's a bitch, limiting one's mobility and movement, but others shouldn't be put into possible peril just because I wanted to do something.
Other people's needs take precedence over one's own wants; where the Hell is the primitive's social conscience?