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UN Regulation No. 156

Software Update Processes and Management Systems

Series of amendments
Revisions
Contracting Parties
Documents (22 Aug 2025)
Meetings (17 Nov 2025)

2025

2024

2023

2022

2021

2020

2019

2018

2017

CS/OTA Task Force: Agenda for the 35th (September 2025) session

Reference Number: TFCS-35-01

Document date: 22 Aug 25

Relevant to

UN Regulation No. 155 | Cyber Security and Cyber Security Management, UN Regulation No. 156 | Software Update Processes and Management Systems, WP.29 Discussion Topic | Guidelines on Cyber Security Technical Requirements, and WP.29 Discussion Topic | Guidelines of Software Update Technical Requirements

Download from UNECE:

.docx format

UN R156: Proposal to amend the Interpretation Document

Reference Number: TFCS-35-02

Submitted by: France

Document date: 06 Aug 25

Relevant to

UN Regulation No. 156 | Software Update Processes and Management Systems

Download from UNECE:

.docx format

Final report: Dynamic Vehicle Characteristics

Reference Number: TFCS-35-03

Dynamic vehicle characteristics are (data) elements of a vehicle that keep changing during its lifecycle.

Submitted by: EReg

Document date: 09 Jul 24

Relevant to

UN Regulation No. 155 | Cyber Security and Cyber Security Management and UN Regulation No. 156 | Software Update Processes and Management Systems

Download from UNECE:

.pdf format

Status report from the Informal Working Group on Cyber Security and Software Updates

Reference Number: GRVA-22-29

Document date: 03 Jun 25

Relevant to

Download from UNECE:

.pdf format

.pptx format

Proposal for amendments to Software Identification Number (RxSWIN) requirements

Reference Number: GRVA/2025/28

Document date: 10 Apr 25

Document status: Formal GR review

Relevant to

UN Regulation No. 156 | Software Update Processes and Management Systems and United Nations Agreement | RE3 Construction of Vehicles

View full document file for more information

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.pdf format

.docx format

Minutes of the 34th (March 2025) TFCS informal subgroup session

Reference Number: TFCS-34-05

Document date: 28 Mar 25

Relevant to

UN Regulation No. 155 | Cyber Security and Cyber Security Management, UN Regulation No. 156 | Software Update Processes and Management Systems, and United Nations Agreement | RE3 Construction of Vehicles

Download from UNECE:

.docx format

Minutes of the 33rd (November 2024) TFCS informal subgroup session

Reference Number: TFCS-33-17/Rev.1

Document date: 18 Mar 25

Relevant to

UN Regulation No. 155 | Cyber Security and Cyber Security Management and UN Regulation No. 156 | Software Update Processes and Management Systems

Download from UNECE:

.docx format

CS/OTA Task Force: Agenda for the 34th (March 2025) session

Reference Number: TFCS-34-01/Rev.2

Document date: 17 Mar 25

Relevant to

UN Regulation No. 155 | Cyber Security and Cyber Security Management and UN Regulation No. 156 | Software Update Processes and Management Systems

Download from UNECE:

.docx format

Post-registration software updates for increased functionalities

Reference Number: TFCS-34-02

Submitted by: CLEPA and OICA

Document date: 14 Mar 25

Relevant to

UN Regulation No. 156 | Software Update Processes and Management Systems

Download from UNECE:

.ppt format

UN R156: Proposal for amendments to the Interpretation Document

Reference Number: WP.29/2025/45

Proposal to introduce a mapping of requirements and references to ISO 24089:2023 (“Road vehicles – Software update engineering”) where such referencing may aid the understanding and/or implementation of UN Regulation No. 156 requirements.

Document date: 03 Feb 25

Document status: Adopted by WP.29

Relevant to

UN Regulation No. 156 | Software Update Processes and Management Systems

View full document file for more information

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.pdf format

.docx format

CS/OTA informal group: Proposal to revise the terms of reference

Reference Number: GRVA-21-46

Document date: 23 Jan 25

Document status: Approved by GR

Relevant to

UN Regulation No. 155 | Cyber Security and Cyber Security Management and UN Regulation No. 156 | Software Update Processes and Management Systems

Download from UNECE:

.pdf format

CS/OTA informal group status report to GRVA

Reference Number: GRVA-21-37

Document date: 21 Jan 25

Relevant to

Download from UNECE:

.pdf format

.pptx format

UN R156 and RE3: Proposal for a new series of amendments and revision

Reference Number: GRVA-21-06

Proposal to update provisions concerning implementation of RxSWIN software identification numbers.

Document date: 20 Jan 25

Document status: Informal GR review

Relevant to

UN Regulation No. 156 | Software Update Processes and Management Systems and United Nations Agreement | RE3 Construction of Vehicles

Download from UNECE:

.pdf format

.docx format

Position concerning Terms of Reference IWG CS/OTA

Reference Number: GRVA-21-18

Submitted by: OICA

Document date: 20 Jan 25

Relevant to

UN Regulation No. 155 | Cyber Security and Cyber Security Management and UN Regulation No. 156 | Software Update Processes and Management Systems

Download from UNECE:

.pdf format

.docx format

Software updates for increased functionality

Reference Number: GRVA-21-25

Submitted by: CLEPA and OICA

Document date: 17 Jan 25

Relevant to

UN Regulation No. 156 | Software Update Processes and Management Systems, UN Regulation No. 171 | Driver-Control Assistance Systems (DCAS), and WP.29 Regulatory Project | Automated Driving Systems

Download from UNECE:

.pdf format

.pptx format

CS/OTA informal group: Proposal to update the terms of reference

Reference Number: GRVA-21-05

Document date: 16 Jan 25

Relevant to

UN Regulation No. 0 | International Whole Vehicle Type Approval System (IWVTA), UN Regulation No. 155 | Cyber Security and Cyber Security Management, UN Regulation No. 156 | Software Update Processes and Management Systems, United Nations Agreement | RE3 Construction of Vehicles, WP.29 Regulatory Project | Automated Driving Systems, WP.29 Regulatory Project | Automated vehicle categorisation, WP.29 Regulatory Project | Data Storage Systems for Automated Driving, and WP.29 Discussion Topic | Vehicle data access and protection

Download from UNECE:

.pdf format

.docx format


22 Aug	CS/OTA Task Force: Agenda for the 35th (September 2025) session	TFCS-35-01	2025-08-22
6 Aug	UN R156: Proposal to amend the Interpretation Document (France)	TFCS-35-02	2025-08-06
6 Aug	Final report: Dynamic Vehicle Characteristics (EReg)	TFCS-35-03	2025-08-06
3 Jun	Status report from the Informal Working Group on Cyber Security and Software Updates	GRVA-22-29	2025-06-03
10 Apr	Proposal for amendments to Software Identification Number (RxSWIN) requirements	GRVA/2025/28	2025-04-10
28 Mar	Minutes of the 34th (March 2025) TFCS informal subgroup session	TFCS-34-05	2025-03-28
18 Mar	Minutes of the 33rd (November 2024) TFCS informal subgroup session	TFCS-33-17/Rev.1	2025-03-18
17 Mar	CS/OTA Task Force: Agenda for the 34th (March 2025) session	TFCS-34-01/Rev.2	2025-03-17
14 Mar	Post-registration software updates for increased functionalities (CLEPA and OICA)	TFCS-34-02	2025-03-14
3 Feb	UN R156: Proposal for amendments to the Interpretation Document	WP.29/2025/45	2025-02-03
24 Jan	CS/OTA informal group: Proposal to revise the terms of reference	GRVA-21-46	2025-01-24
21 Jan	CS/OTA informal group status report to GRVA	GRVA-21-37	2025-01-21
20 Jan	UN R156 and RE3: Proposal for a new series of amendments and revision	GRVA-21-06	2025-01-20
20 Jan	Position concerning Terms of Reference IWG CS/OTA (OICA)	GRVA-21-18	2025-01-20
17 Jan	Software updates for increased functionality (CLEPA and OICA)	GRVA-21-25	2025-01-17
16 Jan	CS/OTA informal group: Proposal to update the terms of reference	GRVA-21-05	2025-01-16