So the alcohol is part of the story but far from the end of it. Alcohol related accidents only made up about 1/3 of the deadly accidents in the US [0]. The NHTSA identifies a few different causes of car accidents including distracted driving and drug or alcohol related accidents [1]. Also noteworthy is that Marijuana seems to cause the same issues as alcohol although the studies are a little less detailed[2]. I couldn't find long term studies on the topic but I suspect that distracted driving has gone up in the past few years since smart phones have become more popular. Distracted drivers killed about 3,000 people in 2020 [3].
What's interesting is that insurance companies seem to measure bad driving using a few different metrics including deaths per miles traveled [5]. Single vehicle crashes were also very dangerous in the rural states like Wyoming (deer are a serious problem), but for some reason Rhode Island tied with Montana at 70% of all accidents being single vehicle accidents[6].
I also couldn't find an annual figure for people disabled in car accidents, but a 2004 study found that about 1.2 million Americans live with permanent injuries from car accidents and about 41% of them are unable to work [6].
