Random Observation

Did truckers get rid of CB radios? As I drive to and from work everyday in Baton Rouge, I see a lot of truckers. They are always communicating, with what I have in my head as being other truckers. Only they aren't on radios. They are on cell phones. And not headsets either. One hand holding the phone, the other on the wheel. And this isn't just one or two. It's like 90%. Am I the only one noticing this? Feel free to comment.