Had a reminder of another pet hate just last night, while approaching a T-Junction, with the intention of turning left. Only one car ahead of me, which was indicating to turn right. All looking good for a quick getaway, until, at the last minute, the car in front swerves to the left and blocks my access to turn left at the junction, despite the facts that
a) As I said they are turning right, and
b) that there is ample room for it to pull alongside the centre line as they should. So I had to sit there waiting for him/her to get a sufficient gap in two lines of traffic on a busy road at rush hour!!