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Regulation · Safety standard

UNECE R156: Software Update and Software Update Management System (SUMS) Regulation

UNECE Regulation No. 156 requires vehicle manufacturers to implement a Software Update Management System (SUMS) for type approval. Covers OTA software updates for connected and autonomous vehicles, including cybersecurity, integrity, and rollback requirements. Adopted alongside R155 by 64 countries.

Jurisdiction: Global · Effective 2021-01-01

Machine-readable surfaces

Sources (1)

  1. https://unece.org/transport/documents/2021/03/standards/regulation-no-156-software-update-and-software-update-management · 2021-01-01

Status history

  • In effect · 2021-01-01 · agent-recon

    Initial ingestion

Common questions

What does UNECE R156: Software Update and Software Update Management System (SUMS) Regulation cover?
UNECE Regulation No. 156 requires vehicle manufacturers to implement a Software Update Management System (SUMS) for type approval. Covers OTA software updates for connected and autonomous vehicles, including cybersecurity, integrity, and rollback requirements. Adopted alongside R155 by 64 countries.
Where does UNECE R156: Software Update and Software Update Management System (SUMS) Regulation apply?
UNECE R156: Software Update and Software Update Management System (SUMS) Regulation is recorded as a safety_standard applying in Global on the DEPLOY registry.
When did UNECE R156: Software Update and Software Update Management System (SUMS) Regulation take effect?
UNECE R156: Software Update and Software Update Management System (SUMS) Regulation is recorded as effective January 1, 2021 on the DEPLOY registry.
Is UNECE R156: Software Update and Software Update Management System (SUMS) Regulation still in effect?
UNECE R156: Software Update and Software Update Management System (SUMS) Regulation is currently in effect and applies to covered operators in the named jurisdiction.
What types of robots does UNECE R156: Software Update and Software Update Management System (SUMS) Regulation apply to?
UNECE R156: Software Update and Software Update Management System (SUMS) Regulation is recorded as applying to autonomous vehicles, truck on the DEPLOY registry.
Which robot models on the DEPLOY registry fall under UNECE R156: Software Update and Software Update Management System (SUMS) Regulation?
8 robot models on the DEPLOY registry match the form-factor scope of UNECE R156: Software Update and Software Update Management System (SUMS) Regulation: 789D AHS, 930E AHS, ARC (Autonomous Relay Convoy), Apollo RT6 and 4 others. Form-factor scope match does not by itself establish compliance status; review the underlying primary sources for each operator.
Methodology: Unreviewed · 1 source (no primary) · last reviewed 2026-08-09

Verification posture

Unreviewed

Low confidence

Review state

Stable

Last reviewed 2026-08-09

Architectural position

Cohort: av

Sources by quality tier

1
unclassified
Unclassified source

The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.

Methodology surface for UNECE R156: Software Update and Software Update Management System (SUMS) Regulation.

Canonical ID e33d9e5d-878f-4ba7-8f71-f45f45587f89