EN 50716:2023 - Railway Applications - Requirements for Software Development
Annex A: Criteria for the selection of techniques and measures – EN 50716:2023 - Railway Applications - Requirements for Software Development

EN 50716:2023 - Railway Applications - Requirements for Software Development A.12: Table A.12: coding standards

Detailed table for design and coding standards. A coding standard is HR at Basic Integrity to SIL 2 and M at SIL 3 and 4; a coding style guide and limits on the size and complexity of each function, subroutine or method are HR at every level (the size limit may not be achievable where further splitting of a complex component makes no sense); an entry and exit point strategy is R at Basic Integrity and HR above; defined control of global variables is HR up to SIL 2 and M at SIL 3 and 4.

Maintained by Gerard Blokdyk

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This control maps to 5 controls across 3 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.

  • A-1.5 Requirements, design and code standards established
  • A-5.4 Source code follows the code standards
  • 5.1.12 5.1.12 Identification and avoidance of common software defects
  • 5.1.4 5.1.4 Software development standards, methods and tools planning
  • 6:5.4 5.4 General topics for the product development at the software level

Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.

Other controls in Annex A: Criteria for the selection of techniques and measures – EN 50716:2023 - Railway Applications - Requirements for Software Development

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The graph holds this control, the 5 it maps to, and the evidence behind each claim, over MCP and REST.