When I first began to write this reply, I was going to say that I thought termination in this situation was a bit much and that a written warning with a 3-5 day unpaid vacation would suffice. But, as I thought about it, I began to wonder if this was an isolated incident which happened to be caught on tape (local, but I wonder how long will it remain that way) or if this was a trend for this driver and, if so, perhaps this guy may need a refresher course in driver safety (4-6 < 30, 6-8 > 30). There have been many threads concerning the implementation of various new technologies by UPS, to include GPS, seatbelt monitors, e-brake monitors, etc., but after viewing this video, I would like to suggest one more, a dashboard camera similar to the ones used by law enforcement. I'm sorry, I just cannot find any excuse for his behavior. I will tell you that I agree with one poster above in that if I were the vehicle in front of that feeder I would have slowed right down, taken down the plate and/or vehicle number (as my hands were trembling from having some knucklehead inches from my bumper), and, after a few miles of this, made my way to the right so that he could encounter his next "victim". To the posters above who said the reporter should have made his way to the right immediately, why? He was at speed limit, centered in his lane and had the appropriate following distance established. He was not wrong.
Imagine the different turn this thread may have taken had the situation progressed (regressed?) to the point where there was an accident or the reporter felt that he had no choice but to get out of this guys way and moved to the right without being 100% sure he had room to do so.