(21)In view of the gradual approach to eliminating obstacles to the interoperability of the rail system and of the time consequently required for the adoption of TSIs, steps should be taken to avoid a situation where Member States adopt new national rules or undertake projects that increase the diversity of the present system.
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New version applies from 22/03/2011.
60 provisions change.
Later versions: 01/04/2013, 31/03/2014, 01/01/2015.
Recital 21 changes in this version: compare with the current text.