That’ the law in Tennessee and has been ever since I can remember. We are a state of left lane drivers. You can’t get them to move over without the use of a D9 Cat. You can flash lights, beep horn, ride their bumper and they will not move over. Drives me crazy, but then again, it’s a short trip.
I live in Seattle where I drove for 41 years, and then move to Kentucky where I’ve driven now for 13 years. The problem it seems to be someone unique for Kentucky drivers is they don’t use their turn signals. The problem in Seattle was that people would get on that thing freeway and make a beeline for the passing lane and then camp out there at whatever speed they were going. They get out of your way in kentucky. Well at least for the most part.