Live bus/train timetables that say the next bus/train is 2mins away when really its 20mins away.
People who think their bag deserves a seat on the bus/train more than I do.
People who sit on the outer/isle seat of a two seater on a bus/train and leave the window seat free so people can't don't sit next to them.
People on buses/trains.
Yep, I'm on a bus, about to get on a train.