prEN 50159

Railway Applications - Communication, signalling and processing systems - Safety-related communication in transmission systems prEN 50159

Scope

Changes with respect to the current edition EN 50159:2010
This European Standard is applicable to safety-related electronic systems using for digital communication purposes a transmission system which was not necessarily designed for safety-related applications. For transmission systems where the risk of unauthorized access is not acceptable, the standard defines the interface to the applicable cybersecurity standards.
Both safety-related equipment and non-safety-related equipment can be connected to the transmission system.
This European standard gives the specific requirements needed to achieve safety-related communication between safety-related equipment connected to the transmission system, while the general system requirements including allocation of safety requirements and content of the safety case are defined in EN 50129.
This European Standard is not applicable to existing systems, which had already been accepted prior to the release of this standard. However, so far as reasonably practicable, it is applicable to modifications and extensions to existing systems, subsystems and equipment.
This European Standard does not specify
– the transmission system,
– equipment connected to the transmission system,
– solutions (e.g. for interoperability),
– which kind of data are safety-related and which are not.