API provided by Network Rail which lists live train times. You will need to register with Network Rail to get access to this information.

Dataset of the transport infrastructures in the region of Madrid, Spain, provided by the Consorcio Regional de Transportes de Madrid (http://www.crtm.es/)

Statistics of Travel to Work, School and College from www.statcentral.ie under the theme Business Sectors - Tourism and Travel from the Central Statistics Office (CSO)...

This is a GTFS feed with transit data for virtually all bus/metro/train/tram and some ferry services in the Netherlands, it also contains most international connections towards...