ANNEX

ERTMS CHARACTERISTICS
1.

DESCRIPTION OF THE PARAMETER
The unified control/command and signalling subsystem (ERTMS — European rail traffic management system) comprise two elements:
- the control/command and signalling element (ERTMS/ETCS — European rail traffic management system/European train control system) covers both the onboard subsystems and track-side subsystems,
- the radio and telecommunication element (ERTMS/GSM-R — GSM for railways) is based on the standards applied to the public GSM network and also covers both track-side and onboard equipment. GSM-R is based on ETSI standard GSM phase 2+, including GPRS (global packet radio services), extended to railway-specific applications.
2.

CHARACTERISTICS TO BE RESPECTED
2.1.

ERTMS/ETCS:
The basis for the control-command and signalling subsystem shall be the set of specifications listed in the following table. If deemed necessary, these specifications can be revised and extended in accordance with the TSI revision procedure of Directives 96/48/EC and 2001/16/EC. Such a revision will consider the opinion expressed in the ERTMS Change Control Management procedure, taking into account the fact that a consolidation phase is necessary for the ERTMS specifications, based on the trial sites and the first implementations
Substituted by Corrigendum to Commission Decision 2004/447/EC of 29 April 2004 modifying Annex A to Decision 2002/731/EC of 30 May 2002 and establishing the main characteristics of Class A system (ERTMS) of the control-command and signalling subsystem of the trans-European conventional rail system referred to in Directive 2001/16/EC of the European Parliament and of the Council (Official Journal of the European Union L 155 of 30 April 2004).