Unfortunately, it's not just tippers that behave like this (although having had the late, lamented Transalp written off by a tipper, I'm not a fan!) - I find myself riding as though any vehicle in front of me is likely to change lanes without looking of using signals. Too many drivers today seem to be dreaming, or reading, or on the phone.......
Modern vehicles are so easy to drive, and cocoon the driver in warm, quiet, plush surroundings, that they lose concentration.
