So, the most basic comparison could be drawn from population density from the different areas in question? What are those?
Part of the issue is that we have so little going on that virtually every single crash gets reported. And that we have so few major roads that crashes on them have a disproportionate impact on traffic. So, where else have you lived?
Just for interest. Population density
California, MD - 928 people per square mile
Lexington Park - 2068
Hollywood - 280
St Marys County - 146
Me, I live south of the base, and while I read about wrecks, relatively few happen near me. when I lived on Chancellors and it was two lanes, there was literally a crash every single week. After the rebuild, it's one every few months, if even that frequent.