About 35+ years ago or so I was involved in a truck driver training program because I was going to road test new truck drivers. One video we saw still sticks with me today while pulling my 5th wheel. It showed how a truck driver basically had to analyze the surrounding drivers. Drivers that are not paying attention, busy talking to others in their vehicle, weaving back & forth in the lane ahead, trying to beat you onto the roadway from an intersecting road, etc.
As an RV driver you not only have to pay attention to your mirrors and road ahead, but you have to anticipate what other drivers might do so that you can be ready to make any necessary adjustments.
I've cussed out other drivers that pull stupid moves in front or beside me, but it's still my responsibility to anticipate and adjust if necessary. Assume stupid moves at all times.