We have put all the relevant documents on our NB-Rail webpage:
The official documents are also on CIRCABC and can be accessed following this procedure:
- Goto homepage of circa
- Click: "Browse categories" on the left side
- Click: “NB-Net - Notified Bodies Network” from the list (Interinstitutional projects)
- Click: "NB-Rail"
- Click: “Library” on the left side
- Click: "Public Documents"
The Technical Specifications for Interoperability (TSI) can be found on the official webpage of ERA.