Changes made by Commission Decision of 12 May 2011 concerning the technical specification for interoperability relating to the ‘operation and traffic management’ subsystem of the trans-European conventional rail system (notified under document C(2011) 3099) (2011/314/EU)
EU Decision 2011/314
The legislation Commission Decision of 12 May 2011 concerning the technical specification for interoperability relating to the ‘operation and traffic management’ subsystem of the trans-European conventional rail system (notified under document C(2011) 3099) (2011/314/EU) changes, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.