Eh, not necessarily my fav, but really defensive driving 101, & 102 pretty much cover it.
Noting that I prefer slower more scenic backroads I do use freeways as well as some of the less slow highways as needed.
The AN650 is no real problem on them of course. Still not my fav, but it handles the freeway with panache.
The HD200 is a bit faster than your Liberty, but not really a freeway cruiser, so not my tool of choice for that but it does work. Carpool lanes and carpool lane exits are handy.
I've been on the freeway in Montana on my old S200, which is not as quick, & probably not as fast your Liberty, & survived.
Folks will get around you, just don't camp the left lane, & keep your eyes open.