I've travelled often with two other RV'ers. One has a large 5th wheel setup and one a travel trailer. We all have two way radios and stay in contact. Interstate is no problem. When we're on secondary roads, the last camper in line keeps track of traffic behind us. Radios us to ensure we leave plenty of space for those wishing to pass and safely leapfrog in front of us all. If traffic doesn't permit it, the last camper will radio he's pulling over to let traffic pass. Then the middle camper and then the lead camper. We've never had any issues and usually those passing give us a "thumbs up."
It's all about being aware of your surroundings, being considerate and sharing the road. (Oh-yeah, and planning reservations at campsites. Because it's easy to show up and get one site without reservations; but three?)