Berlin U-Bahn carriage 1993. These long seats along the sides create a lot of problems with regard to etiquette. Which place is the least stalkerish/creepy, how near to others can you sit? One of the worst things is, if you are tired and need to sit, and there are only two small spaces left, is it OK to ask the people to move up to create one larger space? And what if the person you end up next to turns out to be really smelly? Such a problem for a sensitive soul like me!