The rules include:
No food and/or Drink; No feet on the seat. Was wondering why the tram interiors are so clean and tidy when there are no trash baskets. How this is controlled: one may only board the tram via two entrances. One entrance at the front is next to the driving conductor, the other is the main door in the middle of the cars where a ticket seller and information conductor sits. If one boards with drink or food open, one is asked to step out again.