Two comments:
1) The story about talking to the log truck on a CB radio is brilliant....although many people no longer have CB radios in their rigs. If you do, keep an eye out as you pass the various logging roads. Most of them will have a sign indicating what CB channel to be on. Sometimes it is an actual sign, a lot of times it is spray paint on a tree. That way you know what channel the log trucks are operating on.
2) The blinks & friendly waves are still out there. The fact that you (we) are driving an RV indicates that "Y'all ain't from 'round here". And now you are poking along your RV on the road where they are trying to do their job. Loggers are rural people who work in the woods. You are a visitor. A lot of those visitors go back to the big cities and write laws about what the logger can/cannot do in the woods - because they saw tall trees getting cut along the pretty highway in the middle of nowhere. To them, you (we) represent the enemy of their job & lifestyle.
No, this is not an absolute, and yes this is a generalization. There is a growing divide in the country between rural & urban. Rural is losing by virtue of raw numbers. You and your RV, out in the woods for one weekend a year, represent that urban dominance. Don't be surprised when the locals aren't overly friendly.
Just my $.02
-Eric