Division 2.1 GENERAL

Definition: control-command subsystem. The control-command subsystem is defined as that set of functions and their implementation which allow the safe and predictable movement of rail traffic in order to meet the desired operational activities.

Scope: The TSI control-command defines the essential requirements for those parts of the control-command subsystem that have relevance to interoperability, and therefore are subject to EC declaration of verification.

The features of the control-command subsystem that are related to the interoperability of the trans-European high-speed rail system are determined by:

1. (1)

   the Functions that are essential for the safe control of the railway traffic, and that are essential for operations, including those required under degraded conditions;

2. (2)

   Interfaces,

3. (3)

   the level of Performance required to meet the essential requirements.

The requirements on the necessary functions, interfaces and performance are introduced in the characterisation of control-command, which is described in section 4 where the supporting standards are referenced.