Based on the answers of 2,009 respondents (GSS data) the graph shows that the chance of ever getting a traffic ticket goes up with IQ (WORDSUM). This sample includes all races, but the pattern for whites alone is the same.
What's going on here? I suppose that folks with really low IQs are less likely drive, but the pattern holds for the right side of the bell curve. Do smarter people have longer commutes? Do they get bored more easily and fail to pay attention? Myself, I have to listen to audio books when I'm on the road, but I'll admit it's distracting.
(I checked and found that age does not explain the pattern.)