I visited Berlin this summer and Germany has a 9 euro ticket that gives you unlimited travel on local/regional transport services during until the end of the calendar month. The ticket can be bought only throughout the summer months.
For a tourist that was in town only for a few days, it was just amazing, no worries when taking any public transport for ticket zones, right tickets or time of availability. I imagine it was great for commuters too, price-wise at the very least. To me it seems like a great idea, honestly, I'm just not sure what the _real_ costs were and how financially viable such a measure would be over the long term.
For a tourist that was in town only for a few days, it was just amazing, no worries when taking any public transport for ticket zones, right tickets or time of availability. I imagine it was great for commuters too, price-wise at the very least. To me it seems like a great idea, honestly, I'm just not sure what the _real_ costs were and how financially viable such a measure would be over the long term.