I want to create some proof of concept for an international public transport service. Is there any data or an API available that already normalizes this data across multiple countries, besides Google Maps?
TRAVIC has a list of public transport service APIs that conform to the GTFS standard: http://tracker.geops.ch/
- List of API Feeds (searchable and filterable)
EDIT: I found a couple of more-direct links to GTFS feeds internationally: