I really want this to exist for Belgium. Right now the public transport prices are absurd here... An all year pass for just the train in all of Belgium ranges in the 10k eur/year, and there is no national metro+bus+tram access (just Brussels is 700 EUR / year for that with no access to other cities).
It's absurd and caused by fragmentation of services between Flanders, wallonia and Brussels with no coordination between them.
It's absurd and caused by fragmentation of services between Flanders, wallonia and Brussels with no coordination between them.