In addition to the specifications listed in the CCS TSI, the design and certification of ERTMS equipment and its application in railway projects may be supported by the following documents.

It must be noted that they have no binding legal status, anyway they have been subject to the review of experts from railway and suppliers organisation before their publication in this web site.

The ERA will take care of updating them when necessary, to ensure as much as possible that they represent the current best practice, on the basis of the experience of all stakeholders.