CEI EN 50657 : 1ED 2018

European foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Objectives, conformance and software
  integrity levels
5 Software management and organization
6 Software assurance
7 Software development
8 Systems configured by application data:
  development of application data
9 Software deployment and maintenance
Annex A (normative) - Criteria for the Selection of
        Techniques and Measures
Annex B (normative) - Key software roles and
        responsibilities
Annex C (informative) - Documents Control Summary
Annex D (informative) - Bibliography of techniques
Annex E (informative) - Changes in this European Standard
        compared to EN 50128:2011
Annex ZZ (informative) - Relationship between this
         European Standard and the Essential
         Requirements of EU Directive 2008/57/EC
Bibliography

Defines the process and technical requirements for the development of software for programmable electronic systems for use in rolling stock applications.