Each passenger should have only one seat, regardless of the need for their bag to sit somewhere comfortable, and those with newspapers should kindly fold them over so as to avoid elbowing those next to them. If you are sitting in an aisle seat, be ready to let the person sitting in the window seat out. If you see a spare pair of seats and you feel you would appreciate the extra space, move quickly to the empty seats and then make a point of stretching out on them for a few seconds - you should never move to another seat in such a way as to imply you cannot bear sitting next to your previous neighbour. Do not fall asleep on the passenger next to you unless you know them extremely well.

Most importantly, do not leave your bag or other personal belongings behind on the bus. You may not be able to get it back without a lot of effort8, and if your bag looks suspicious it will be removed and may be destroyed. This, like some of the more obvious things such as not smoking and not smelling like a sweaty yak, are within the limits of most people's common sense.