Add to that list, what do most wheelers use? It would be helpful to be compatible with most other people in case of trouble.This is a great thread. Back in the day in high school (pre-cell phone era) all of us put CB radios in our cars and that was the way we connected when we were out and about. That is about the extent of my knowledge.
Learning more from reading this thread. I see CB, HAM, and GMRS all mentioned. Could someone put together a quick grid comparison of each along with pluses, minuses, and requirements? Also good options for each to explore.