Functional Safety Certification for Autonomous Trains and Metros: EN 50657 Explained

Date
2026-08-31
Location
Online
Host
Zach L

About this event

A Crash Course for Field Service Engineers pursuing functional safety certification. A live 30-minute crash course on EN 50657 (Rolling Stock Software) for autonomous trains and metros, built for field service engineers pursuing functional safety certification. What We'll Cover: What EN 50657 (Rolling Stock Software) requires and how its scope applies to autonomous trains and metros Mapping EN 50657 clauses to the certification evidence assessors expect System-specific hazards and safety functions typical of autonomous trains and metros Common findings that delay certification, and how to avoid them A practical readiness roadmap for field service engineers preparing for assessment Related topics: EN 50657 · Autonomous Trains and Metros · functional safety certification · functional safety

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Registration

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About EN 50657 (Rolling Stock Software)

This training provides practical skills and structured learning on the compliance requirements covered 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.