Stood on the wrong side of the escalator exactly once. The collective silent judgement taught me faster than any sign could have.
I stood on the wrong side of the escalator, talked on the phone on a quiet train, and sat in what was apparently the 'wrong' seat — all in one week, all met with silent judgement. Nobody says anything, you just feel the disapproval. What are the unwritten transport rules you only discovered by breaking them?