score:6
About the only difference is noted at the bottom of the page of ticket prices:
Children under the age of 4 may travel without a ticket.
So yes, some children get a discount, but not all.
However, there is a tourist season travel ticket, for x number of days which you can purchase, for certain zones and various combos. For this, children under 11 get a 50% discount, as indicated on the page.
Upvote:3
Children under the age of 4 don't need a ticket.
There are monthly/season tickets at reduced rates for people under 23 as well as 65 and over. And a special ticket for "official large families" and hadicapped persons.
However, there don't seem to be any reduced rates for regular single tickets.