A seat that is not being utilised
Eventually, after a lengthy search, Jessica discovered a vacant seat in the final car next to a young lady, which she shared with the young lady. As she looked around her, she was perplexed that no one had taken up the vacant seat next to her. Despite its disarray, it was contained within some sort of bag.

Unpolite and inconsiderate behaviour.A large number of people crammed into a small space has the potential to develop antisocial behaviour. As I discovered the hard way today, when people are stressed out on a crowded train, they can sometimes exhibit their worst characteristics.