# Commission Decision of 7 November 2006 concerning a technical specification for interoperability relating to the control-command and signalling subsystem of the trans-European high speed rail system and modifying Annex A to Decision 2006/679/EC concerning the technical specification for interoperability relating to the control-command and signalling subsystem of the trans-European conventional rail system (notified under document number C(2006) 5211) (Text with EEA relevance) (2006/860/EC), Division 7.2.4: Upgrading or renewal of the Control-Command Track-side Assembly or parts of it

Extent: E+W+S+N.I.

Upgrading or renewal of the track-side assembly may concern separately:
radio-system (for class B, only renewal is possible),
train protection system,
train detection system interface,
hot axle box detection system,
EMC characteristics.
Therefore different parts of the Control-Command Track-side Assembly may be upgraded or renewed separately (if interoperability is not prejudiced) and concern:
EIRENE functions and interfaces (see sections 4.2.4 and 4.2.5);
ETCS/ERTMS functions and interfaces (see sections 4.2.1, 4.2.3, 4.2.5, 4.2.7, 4.2.8);
Train detection system (see section 4.2.11);
Hot axle box detector (see section 4.2.10);
EMC characteristics (see section 4.2.12).
After the upgrade to Class A system, the existing Class B equipment may remain in use simultaneously with Class A.

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Source: https://www.legislation.gov.uk/eudn/2006/860/annex/division/7/division/7.2/division/7.2.4 (the official version)
Page: https://openlegislation.uk/eu-decision-2006-860/annex/division-7/division-7.2/division-7.2.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.