Here in BC all the commercial trucks using the resource roads (logging, mining, oil) must have radios that use 32 special channels in the land mobile band. Each road uses it's own dedicated channel, which is posted at km 0, and drivers must call out distance markers and direction as they pass them; i.e. "Harrison East, 2km up" or "Thurston, 5km down"
For this reason, I had a commercial radio installed in my H3, and it's very comforting to know where the big rigs are. These radios (mine's an Icom) are about 10 times as powerful as CBs, and about 3 times as expensive, but well worth it in my opinion. The range is excellent, even in our very mountainous Province. We also have a dedicated frequency for the 4x4 clubs programmed into these radios, so our trail chatter doesn't interfere with the commercial users. There is a license required to use these units, but no exam, just a $40/year fee.