SIRI
SIRI provides an abstract model of common public transport concepts and data structures that enables the exchange of information on transport operations between different computer systems. SIRI was established as European standard in October 2006. It is a CEN (European Committee for Standardisation) Technical Standard.
The SIRI standard, together with the complementary standards TRANSMODEL and NeTEx, is supported and promoted by the Data4PT project. You can refer to such project for additional information, support and contact requests.