When a TSI enters into force, a number of interoperability constituents are already on the market. A transition period should be provided for so that these constituents can be integrated into a subsystem even if they do not strictly conform to that TSI.
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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 38 changes in this version: compare with the current text.