Functional Safety Certification for Railway Inspection Robots: EN 50657 Explained

Date
2027-08-05
Location
Online
Host
Zach L

About this event

A Worked-Examples Session for OEM Engineering Teams pursuing functional safety certification. A live 30-minute worked-examples session on EN 50657 (Rolling Stock Software) for railway inspection robots, built for oem engineering teams pursuing functional safety certification. What We'll Cover: What EN 50657 (Rolling Stock Software) requires and how its scope applies to railway inspection robots Mapping EN 50657 clauses to the certification evidence assessors expect System-specific hazards and safety functions typical of railway inspection robots Common findings that delay certification, and how to avoid them A practical readiness roadmap for oem engineering teams preparing for assessment Related topics: EN 50657 · Railway Inspection Robots · functional safety certification · functional safety assessment · Worked-Examples Session · OEM Engineering Teams · safety lifecycle · compliance evidence · SIL · PL · risk assessment · safety case Critical Systems Analysis provides embedded functional safety consulting for EN 50657. Learn more: https://criticalsystemsanalysis.com Partner with us: https://meetings.hubspot.com/benjamin-twombly/strategic-partnerships

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About EN 50657 (Rolling Stock Software)

This event covers the compliance, engineering, and verification requirements defined by EN 50657.

EN 50657 applies EN 50128 principles to software on board rolling stock — traction, brakes, doors, TCMS — with rail-vehicle-appropriate scoping of integrity levels and lifecycle evidence.

What it regulates

Software lifecycle, technique selection and independence for on-board systems outside classic signaling, from SIL 0 to SIL 4 contexts (commonly up to SIL 2 for TCMS functions).

Who must comply

Train builders and subsystem suppliers (brake, door, HVAC, TCMS software).

Key requirements of EN 50657

  • Alignment with 50128 structure adapted to vehicle functions
  • Basic integrity (SIL 0) discipline for non-safety software sharing platforms
  • Integration with vehicle-level RAMS per 50126

Key concepts: EN 50657

Basic integrity
Managed development for SIL 0 software cohabiting with safety functions.
Partitioning on vehicle networks
Freedom-from-interference arguments across shared buses and controllers.
TCMS
Train control and management system — the integration platform whose mixed-criticality software this standard disciplines.

Frequently asked questions: EN 50657

Door control software — 50128 or 50657?

On-board rolling stock functions use 50657; the same function implemented within signaling scope would fall under 50128 — the split is architectural domain, not function criticality.

Standard information based on the published text of EN 50657 (Rolling Stock Software). Event content is provided by the host. For authoritative guidance, consult the official standard body.