[BioGeek]

> The game would be probably to provide some kind of standard or API that would make all those independant providers rally accross a common model.

This common specification already exists. It is called GTFS [1] (General Transit Feed Specification) and can be used to exchange static transit data. There is also GTFS-realtime [2], an extension to GTFS, to be used to exchange realtime transit data.

The specification was designed through a partnership of the initial Live Transit Updates partner agencies, a number of transit developers and Google. The specification was introduced and released under the Creative Commons Attribution 3.0 license in August 2011.

[1] https://developers.google.com/transit/gtfs/ [2] https://developers.google.com/transit/gtfs-realtime/