The [head] games people play while driving; do they really think no one knows? Yes, I said “they” because I don’t do it. And there are a lot of others who don’t as well. I suspect we lack training but that’s not going to solve those who are aggressive. I saw a list of the states rules on left lane driving. Most reserve that lane for passing, with some exceptions and variations, but I don’t see any enforcement, except for speeding. Those behaviors, aggressive and otherwise that are dangerous to all other drivers might be stemmed a bit if there were a threat of a citation.