NHTSA has a fairly good repository of research, although it doesn't cover everything you're looking for [1]. It's been a while since I reviewed the statistics,

NHTSA has a fairly good repository of research, although it doesn't cover everything you're looking for [1]. It's been a while since I reviewed the statistics, but I recall that highways are significantly safer than high-speed undivided "surface streets". Intersections, and specifically left turns at them are also more dangerous than other road areas. There is also some scattered research like [2] on related topics, for example showing that overtaking accounts for relatively few total accidents, but has an outsized percentage of fatalities (as you would expect due to the collision dynamics). [1] https://www.nhtsa.gov/research https://www.nhtsa.gov/research [2] https://www.sciencedirect.com/science/article/pii/S235214651630391X https://www.sciencedirect.com/science/article/pii/S235214651...