A CB Radio is a great way to communicate with others. Primarily used while travelling in a vehicle, they are a good way to stay in touch with others in your entourage or even to strike up a friendly conversation with a stranger.
CBs have always been popular among truckers, but they are also a good device for anyone to have handy in case of emergencies. One benefit to CB radios over a standard two way radio is range. CB's typically connect to an external antenna, which drastically improves the possible range. They are available in both handheld and installed models.