You guy are putting gas on some fire here. Retrofive knows my stance on HAM's and you should not get me started here... again.
Just help the OP out.
If you travel alone, HAM is the way to go. Think emergency situations where you need to be heard.
CB is good if travel in small packs and the first to last car distance is not that great.
walkie-talkie good too, if the distance is not that great and there are no obstacles. Line of sight pretty much.
Antenna placement is by far the most important aspect in either case (CB or HAM).
But again, all of you need to be using the same frequency or radio capability. If you have a CB and the other car has a CB too, but is using SSB and you don't have that, then you might just use a rock to catch his attention.
Just help the OP out.
If you travel alone, HAM is the way to go. Think emergency situations where you need to be heard.
CB is good if travel in small packs and the first to last car distance is not that great.
walkie-talkie good too, if the distance is not that great and there are no obstacles. Line of sight pretty much.
Antenna placement is by far the most important aspect in either case (CB or HAM).
But again, all of you need to be using the same frequency or radio capability. If you have a CB and the other car has a CB too, but is using SSB and you don't have that, then you might just use a rock to catch his attention.