I was in a "tricky" situation when driving up to a work meeting the other week actually. I was cruising in the slow lane behind a lorry, required the middle lane for M40/M42 road split, I indicated for about 2 seconds and checked the lane was clear as you do in autopilot mode when motorway driving. I then started making my manoeuvre into the middle lane, when somebody going much faster in the lane 3 (outside lane) pulled into lane 2 on collision course with me as he wanted to take the exit off lane 1.
We both saw each other and parted before hitting, but needless to say...it shook me up as I was following all the normal safe procedures for changing lanes and he seemed to come out of nowhere trying to get off at the exit (moving from lane 3 to an exit on lane 1). I take it that I was in the right and he was in the wrong? or would it be 50/50? He must have been going faster than the specs speed limit shown too.