I think you're right that it's the intersections/interactions. I commute ~50mi day across varied roads. The intersections on the "not a totally limited access highway but pretty close" seem to be where most of the stupid stuff happens. It's not any different than the normal stuff but now the speed differentials are higher so stupid has the potential to hurt more.
Most people drive around what's reasonable for the road. Some people drive insanely fast and some people drive whatever the speed limit is, reasonableness be damned. With normal traffic the latter group combined with the sheer volume of cars limit the ability of the two former groups to have large speed differentials with any of the other two groups.
Now with 'rona traffic volumes you've got the people that want to drive 100, weaving around the people who want to do 70-85 while the idiots who think it's acceptable to merge at 30mph less than traffic speed do just that. The net situation is just one unsignaled lane change away from a crash.
That said, I've seen a lot less aggressive passing because the roads are so empty that you get lots of chance to pass people so you don't need to take a crappy one.
Most people drive around what's reasonable for the road. Some people drive insanely fast and some people drive whatever the speed limit is, reasonableness be damned. With normal traffic the latter group combined with the sheer volume of cars limit the ability of the two former groups to have large speed differentials with any of the other two groups.
Now with 'rona traffic volumes you've got the people that want to drive 100, weaving around the people who want to do 70-85 while the idiots who think it's acceptable to merge at 30mph less than traffic speed do just that. The net situation is just one unsignaled lane change away from a crash.
That said, I've seen a lot less aggressive passing because the roads are so empty that you get lots of chance to pass people so you don't need to take a crappy one.