One of the demands of Brazilian protesters has been the access to free public transport, subsidized by the government. This idea could sound a bit out of context. However, there is some examples in the world that worth to explore.

Something related happen in Geneva, where tourist have access to a free ride card, that permits them trip around the city.

http://goeurope.about.com/od/geneva/a/free-geneva-transportation.htm

In Sydney, there is some central lines that are for free in order to facilitate the mobility of the people, mainly in the places where are located the business districts and offices.
Australia have other example, because in Melbourne you can have a free ride if you take the Metro before 7:00 am.

http://www.pragmatismopolitico.com.br/2013/06/conheca-cidades-que-tem-transporte-publico-de-graca.html
http://www.weekendnotes.com/how-to-save-on-public-transport-melbourne/

Other recent case is Estonia, where the capital city of Tallinn has invested in a free public transport system for residents, which have been a success.

For more information, please check this note…