I take the bus a lot. It’s cheap, it gives me reading time on the way to work, and it’s good for the environment.
I live in a medium-sized college town, which means for the purposes of this question that people tend to get on the bus when it’s inbound towards city center and get off the bus on the outbound routes, and very few people don’t have a city center stop on at least one end of their trip. These buses are organized typically, with two seats on either side of the aisle.
So my question is this–the bus is normally pretty full when I board it to go home at the central stop. Typically I end up sitting next to a stranger. At some point during the ride outbound, seats will open up as people leave the bus but are not replaced. During this time, I’ll see some people get up and move from sharing a seat next to a stranger to an empty pair of seats. My question is, is there any etiquette associated with this? Should one or should one not, as the bus empties, spread out so as to not be sitting in the seat next to a stranger?