I recently put a CB back in my truck as well, actually bought a new one because I couldn't get my old one working after it got banged around the garage for a few years. I've noticed they are starting to get popular again from posts on other forums where poeple ask about them. I still see signs posted along rural highways saying state police monitor cb channel 9 so it must still be programmed into their scanners. I bought one with the NOAA alerts as a switch for channel 9 and 19 and placed the state to NOAA channel lookup card on my sunvisor so every so often I can check and quickly and change that channel as the miles go by. If I need to call out the ch9/19 switch will work well as I could alternate between the so that a passing truck might hear me on 19 before the state police drive by. I picked up a used handheld CB so if one of us leaves the truck for some reason we can communicate back if cell phones can't get a signal say if I want to walk up a hill to try and get a signal or ne of us goes into a restroom at a rest stop.
I don't see much point in the FRS radios, CB can cover the same or better range and is more commly listened to. We tried a set of FRS radios one year at deer season and the range was so limited we could sometimes see each other but not talk to each other with them, they are not something I would want to chance being rescued on.