From 1st of January 2014, CAF has been accepted as Full Member of the UNISIG Consortium, built up with the major European ERTMS industries, with the purpose to develop, maintain and update the ERTMS specifications in close cooperation with the European Railway Agency (ERA).

Formerly, from January 2012, CAF has been part of UNISIG as an Associated Member.

In this new step, CAF Signalling has stressed its collaboration within the UNISIG consortium, participating in all technical working groups, and contributing to the first maintenance release of the Baseline 3 ERTMS specifications, to be published in the near future.