Page 111 - 360.revista de Alta Velocidad - Nº 5

ATLAS: The road to Baseline3

• Función 27: Gestión ERTMS del equipamiento ASFA independiente

• Función 77: Transición degradada desde nivel 2 a nivel 1 por pérdida de comunicación.
• Función 121: Inhibición de niveles disponibles (via external switch)

• Función 124: Gestión de la reacción de enlace
• Función 125: Operación en áreas ERTMS fuera de servicio

From those first implementations, the ERTMS specification has evolved to improve defects or
misunderstandings found, and to implement new functionalities requested by Infrastructure
Managers and Train Operators. The release 2.3.0 D evolved to version 3.0.0, 3.1.0, 3.2.0 and
3.3.0, and after:

The Baseline 3 compared with version 2.3.0 D includes:
• 22 new functions and 32 Errors Change Requests (CRs) in SRS 3.0.0 (due to finalisation
of Subset 108)
• 46 Errors CRs with SRS 3.1.0
• 73 CRs with SRS 3.2.0

• 30 CRs added and 2 removed with SRS 3.3.0
The major evolutions are the system version management, harmonised braking curves, the
Limited Supervision, and the Level crossings management.
But other functions have been also included like:

• Speed restriction to ensure a given permitted braking distance
• Inhibition of revocable TSRs from balises in Level 2 or 3

• Redefinition of international train categories

International Congress on High-speed Rail: Technologies and Long Term Impacts - Ciudad Real (Spain) - 25th anniversary Madrid-Sevilla corridor 109