EN 50126-1:1999/corrigendum May 2010

Railway applications - The specification and demonstration of Reliability, Availability, Maintainability and Safety (RAMS) - Part 1: Basic requirements and generic process EN 50126-1:1999/corrigendum May 2010

General information

99.60 Withdrawal effective   Jul 3, 2020


CLC/TC 9X Electrical and electronic applications for railways

European Norm


This European Standard: defines RAMS in terms of reliability, availability, maintainability and safety and their interaction; defines a process, based on the system lifecycle and tasks within it, for managing RAMS; enables conflicts between RAMS elements to be controlled and managed effectively; defines a systematic process for specifying requirements for RAMS and demonstrating that these requirements are achieved; addresses railway specifics; does not define RAMS targets, quantities, requirements or solutions for specific railway applications; does not specify requirements for ensuring system security; does not define rules or processes pertaining to the certification of railway products against the requirements of this standard; does not define an approval process by the safety regulatory authority. This European Standard is applicable: to the specification and demonstration of RAMS for all railway applications and at all levels of such an application, as appropriate, from complete railway routes to major systems within a railway route, and to individual and combined sub-systems and components within these major systems, including those containing software; in particular: to new systems; to new systems integrated into existing systems in operation prior to the creation of this standard, although it is not generally applicable to other aspects of the existing system; to modifications of existing systems in operation prior to the creation of this standard, although it is not generally applicable to other aspects of the existing system at all relevant phases of the lifecycle of an application; for use by Railway Authorities and the railway support industry. NOTE: Guidance on the applicability is given in the requirements of this standard

Related legislation

Legislation related to this standard


Interoperability of the trans-European high-speed rail system


Directive 2001/16/EC of the European Parliament and of the Council of 19 March 2001 on the interoperability of the trans-European conventional rail system


DIRECTIVE 2008/57/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 17 June 2008 on the interoperability of the rail system within the Community (Recast)


Life cycle


EN 50126-1:1999


EN 50126-1:1999/corrigendum May 2010
99.60 Withdrawal effective
Jul 3, 2020


EN 50126-1:2017