I think this is a good point, and largely agree. However, there are also correlations in driver behavior, like it being more dangerous driving on July 4 or New Year's Eve in America as so many people celebrate and drive drunk, increasing accident rates.

According to NHSTA, 144 drunk-driving deaths on July 4, compared to 36 on average: https://www.bactrack.com/blogs/expert-center/35042821-the-mo...

I would say that's mass carnage.