The geographical scope of the previous TSIs was the TEN-T plus the vehicles likely to travel on it.
The Framework Mandate
to the Agency states that ’the Agency shall analyse the feasibility of extending the geographical scope of the TSIs (...), and provide a work programme aiming at the development of new TSIs and/or review of TSIs already adopted with a view to covering the lines and rolling stock not yet covered (...)’.
In 2010 the mandate
was issued by the Commission for developing and reviewing the TSIs with a view to extending their scope to the whole rail system in the European Union.
The mandate also made a provision for merging the TSIs related to HS and CR rail systems into single TSI for each subsystem.
The corresponding TSIs were eventually adopted by the Commission in 2014 and entered in force on 1 January 2015.