Functional Safety Certification for Autonomous Trucks: UNECE R157 Explained

Date
2026-10-19
Location
Online
Host
Zach L

About this event

A Practical Workshop for Safety Engineers pursuing functional safety certification. A live 30-minute practical workshop on UNECE R157 (Automated Lane Keeping Systems) for autonomous trucks, built for safety engineers pursuing functional safety certification. What We'll Cover: What UNECE R157 (Automated Lane Keeping Systems) requires and how its scope applies to autonomous trucks Mapping UNECE R157 clauses to the certification evidence assessors expect System-specific hazards and safety functions typical of autonomous trucks Common findings that delay certification, and how to avoid them A practical readiness roadmap for safety engineers preparing for assessment Related topics: UNECE R157 · Autonomous Trucks · functional safety certification · functional safety assessment · Practical Worksh

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About UNECE R157 (Automated Lane Keeping Systems)

This hands-on workshop builds applied knowledge and team exercises around the certification requirements of UNECE R157.

UN Regulation No. 157 is the first international type-approval regulation for an SAE Level 3 feature: Automated Lane Keeping Systems on motorways, defining system requirements, driver-interaction (transition demands), DSSAD data recording, and the audit/assessment regime.

What it regulates

Operational conditions (initially up to 60 km/h, extended to 130 km/h with lane changes in amendments), minimum risk maneuvers, driver availability monitoring, transition demand logic, data storage for automated driving, and approval tests.

Who must comply

OEMs seeking L3 approval in UNECE markets (EU, Japan, others); shapes global L3 architectures beyond those markets.

Key requirements of UNECE R157

  • System safety requirements and ODD limits
  • Transition demands and fallback (minimum risk maneuver)
  • Driver availability recognition
  • DSSAD (data storage system for automated driving)
  • Annexes: audit of safety management, tests incl. scenario catalogs

Key concepts: UNECE R157

DSSAD
Event data recording proving who was driving at contested moments.
Minimum risk maneuver
The system-executed maneuver (controlled stop) when the driver fails to take over.
ODD enforcement
The system must prevent activation and continue safe operation outside its declared domain.
Transition demand
The formal handover request to the driver with guaranteed lead time before fallback executes.

Frequently asked questions: UNECE R157

How does R157 relate to ISO standards?

R157 is the legal type-approval layer; manufacturers evidence its safety requirements using ISO 26262 (malfunctions), ISO 21448 (insufficiencies), and 21434/R155 (security) within the audited safety management system.

Standard information based on the published text of UNECE R157 (Automated Lane Keeping Systems). Event content is provided by the host. For authoritative guidance, consult the official standard body.