Montana would be amazingly safe based on your metric.
[1] https://www.iihs.org/research-areas/fatality-statistics/deta...
> Massachusetts is one of the safest
For those unaware, Boston (largest city in Massachusetts) has a reputation for incredibly aggressive drivers (so does New York City). Is Massachusetts relatively safer because it has so few freeways? I find it hard to believe this can be explained by "quality of drivers". Another idea: Maybe local police are very, very strict about drink/driving, thus reducing the number of deaths.The Karen Read trial was illustrative about how seriously Massachusetts law enforcement takes DUI.
The conduct of the law enforcement professionals and people they associate with leading up to the events relevant to the trail is relevant to a discussion of how seriously they take DUI.
Read did drive under the influence and police and prosecutors laid harsh charges against her, but they could've laid those harsh charges (first- and second-degree murder IIRC) against her even if she had been stone sober that night, so it seems to me that the Read case says nothing about how harshly police and prosecutors treat ordinary DUIs.