Editing Ticket machine (section)

==Ticket and fare formats==
For most of the twentieth century, ticket machines issued paper tickets, or tokens worth one fare each. Later, fare value was loaded onto [[stored-value card]]s (first paper, later smart cards). Passengers could load any amount within a range; it did not necessarily have to correspond to any particular single fare. The cards could be reloaded until their expiration date, again with any monetary amount within a given range.

To encourage usage of ticket machines and reduce the need for salespersons, machine prices may in some cases be lower than those at a ticket counter.