Proposal to introduce new definitions for Automated Driving System (ADS), Dynamic Driving Task, bidirectional vehicles, Enhanced Exterior Sound (EES), and Vehicle Master Control Switch; amend specifications for test mass, sound levels, and measurement procedures for vehicles of categories M₁–M₃, N₁–N₃, and vehicles equipped with an ADS; add provisions for vehicles electrically propelled without internal combustion engines; establish ASEP control ranges and calculation methods; and insert Annex 10 with specific provisions for testing vehicles equipped with an ADS.

Proposal to add a new Table of contents section 7 for special provisions testing vehicles equipped with an ADS; amend footnotes in paragraphs 1.1. and 2.2.; amend paragraph 6.1.3. on available sounds; insert new paragraphs 11.4. through 11.8. define Automated Driving System, Dynamic Driving Task, and Category X and Y vehicles; amend paragraph 14.1.5. on available sounds; amend paragraph 14.3. on pause function for manual and ADS operation; insert new item 0.13. in Annex 1B, Appendix 1 regarding ADS equipment; and insert new Annex 7 with special provisions for testing vehicles equipped with an ADS.

Proposal to amend UN R141 under section 2 to add definitions of Automated Driving System, Dynamic Driving Task, Category X vehicles, Category Y vehicles, Logical signal, and Vehicle Master Control Switch, amend under section 5 to update performance requirements and warning signal specifications for vehicles equipped with an ADS and towed vehicles, amend Annex 1 to add a vehicle ADS status field, amend Annex 3 regarding test procedures for TPMS including deactivation of TPRS and CTIS, amend Annex 4 regarding test weight and refill functionality checks, amend Annexes 5A and 6 regarding towed vehicle communication interfaces, and insert new Annex 9 containing special testing provisions for vehicles equipped with an ADS.

Proposal to amend paragraph 1, footnote 1, insert new paragraphs 2.23. to 2.26. defining Automated Driving System, Dynamic Driving Task, Category X vehicles, and Category Y vehicles, amend paragraph 4.4.1., footnote 2, amend section 5.2.3. to add requirements for vehicles equipped with an ADS and exclude speed warning label requirements for vehicles of categories X and Y, amend Annex 1, footnote 4, insert new item 6.2. regarding ADS equipment, insert new paragraph 2.2. in Annex 2 Section I regarding ADS equipment, and insert new paragraph 4.2. in the Addendum to communication form regarding brief description of the ADS if fitted.

CITA presented PTI-42-02 to link the PTI informal group’s work to the approval of the EU Roadworthiness Package. FSD proposed work to introduce PTI provisions into UN Regulations under the 1958 Agreement. Japan, Russia, and FSD provided brief updates on the use of diagnostic devices to access to in-vehicle data. CITA updated the group on its views concerning PTI for ADS vehicles. CITA explained GRVA/2025/43, GRVA/2025/44, GRVA/2025/34, and GRVA-23-18/Rev.1 on Electromechanical Braking and Parking Lock Devices which will be considered by WP.29 in March.

This document consolidates inputs from Officers of Principal Interest (OPI) on the Automated Driving Systems (ADS) Guidance and Interpretation Document and organizes content into regulatory text, guidance, comments, and examples to facilitate April-May 2026 Workshop discussions. The document provides interpretation of UN Global Technical Regulation and UN Regulation requirements on ADS, addressing safety performance of the Dynamic Driving Task in nominal, critical, and failure situations; interactions between ADS and users; post-deployment safety monitoring through Safety Performance Indicators; Safety Management System audit criteria; and simulation credibility frameworks for verification and validation, while emphasizing that guidance does not introduce new requirements and that the Regulations remain the sole authoritative texts under 1958 and 1998 Agreements.

Proposal to establish uniform provisions for the approval of motor vehicles with regard to their Automated Driving Systems, covering vehicles of categories M₁–M₃, N₁–N₃, L₆ and L₇.

Proposal for a UN GTR on Automated Driving Systems to establish harmonized worldwide provisions for ADS safety, applying to vehicles of categories 1 and 2. It requires manufacturers to implement a Safety Management System, conduct multi-pillar validation (virtual, track, and real-world testing), document a comprehensive safety case demonstrating the ADS capability to safely perform the entire Dynamic Driving Task, and establishes a post-deployment monitoring and reporting framework to promote safety over the life of ADS vehicles.

Questions concerning cyber security amendments for approvals of STU submitted by the expert from Japan that address timing of working document submission to GRVA, whether Part II components may include certificated base vehicle equipment under UN R155 multi-stage categorization, whether STU definition includes ECUs within base vehicle E/E architecture, examination of use cases and implementation challenges, consistency of applicant terminology between Section 3.3.1 and Section 7.6, whether approval authorities for Parts I, II, and III must be identical, clarification of end of support period requirements in para. 2.7(b), installation agreement requirements in para. 5.1.2.1(d), and whether total Cyber Security Risk Assessment Process for whole vehicle with other equipment than ESAs is necessary after ESA installation under para. 7.4.10.

This document presents an initial concept for approvals of devices as components or separate technical units according to UN R155, and the installation of such devices on vehicles already holding UN R155 approval, based on Supplement 3 to the original series. The regulation applies to vehicles of categories L₁–L₇, M₁–M₃, N₁–N₃, and O₁–O₄ with electronic control units, and to approval of components and separate technical units with regard to their cyber security. Approval authorities shall grant type approval only to vehicle or electrical/electronic sub-assembly types that satisfy the regulation’s requirements through document checks and testing. Manufacturers must demonstrate cyber security management systems covering development, production, and post-production phases, including risk assessment, mitigation implementation, monitoring, and response to cyber-attacks. Certificates of Compliance for Cyber Security Management Systems remain valid for three years.

TFCS-37-08 presents proposals to amend UN R155 to establish approval routes for electrical/electronic sub-assemblies and separate technical units. The regulation introduces three parts: Part I covers vehicle cyber security approval; Part II covers component and separate technical unit approval; Part III covers installation approval of approved components and separate technical units in vehicles. Updates include new definitions, application procedures by manufacturers or their representatives, approval conditions specifying connection limitations, and cyber security management system requirements. The proposal requests colleague review and feedback.

Proposal to amend Table A1 of Annex 5 to include high level and sub-level descriptions of vulnerability and threat including spoofing of messages, Sybil attacks, communication channels permitting code injection, manipulation, overwrite and erasure of vehicle held data and code, denial of service attacks, unauthorized access to vehicle systems, viruses in communication media, and malicious messages, and amend Table B1 of Annex 5 to provide corresponding mitigation measures. This proposal is a further elaboration of TFCS-35-07.

UN R155 addresses operator risks in automated driving systems. The ADS Regulation enables operators to offer services using automation and permits remote termination of the ADS. UN R155 mandates that supplier-related risks are managed, but operators are customers, not suppliers, creating downstream risks. An automated vehicle could be susceptible to unauthorised requests from an operator experiencing cyber attack. UN R155 does not define how downstream organisational risks are managed. Manufacturers should identify risks posed by operators and inform Third Party Operators of risks involved and expected minimum-security controls for workstations interfacing with an ADS. This could be achieved via Annex 5.

Proposal to amend UN R13, 13-H, 79, 89, 130, 131, 139, 140, 152, 155, 156, 157, 171, 175, and 178 by introducing provisions on software identification and software updates. Amendments add new paragraphs referring to Software Identification Number definitions in Consolidated Resolution R.E.3, require manufacturers to provide Technical Services with information on hardware and software influencing performance, permit vehicle manufacturers to apply for new approvals differentiating software versions for registered versus new vehicles while avoiding test duplication, and modify production discontinuation provisions to exclude cases where manufacturers seek approval extensions for software updates of registered vehicles.

The Informal Working Group on EV/HFCV Retrofit Systems held its seventh meeting on 5th March 2026. The group adopted the provisional agenda, approved minutes of the previous meeting, and acknowledged ongoing activities under GRPE, GRSP and GRVA. Electrical safety review will continue once clarification regarding UN R100 is available. Cybersecurity discussions covered very old vehicles, older vehicles without cybersecurity provisions, and modern vehicles compliant with UN R155. Braking aspects and the structure of the draft UN Regulation were discussed, including vehicle versus system approval approaches and minimum and maximum vehicle age within the regulation’s scope.

FIA proposes that vehicles in automated mode in mixed traffic should be marked with one light visible from all sides. Marker lights should have uniform colour and shape clearly distinguished from other signal lights, be positioned at sufficient distance from signal lights and headlamps to avoid impairing visibility, and be designed to not glare other road users.

Proposal to insert new paragraphs 0., 0.1. to 0.1.3. to introduce Supplement 4 to the 03 series of amendments to account for vehicles of categories X and Y and vehicles with manual mode operating at speeds above 6 km/h equipped with an Automated Driving System, amend footnote 1 to paragraph 1. to reference the Consolidated Resolution on the Construction of Vehicles document ECE/TRANS/WP.29/78/Rev. 8, amend footnote 2 to paragraphs 6.4.1., 15.4.1., and 24.4.1. to reference Annex 3 to the same document, and amend paragraph 16.7. to specify label placement for adjustable Rear Underrun Protective Devices at the driver’s place or rear area next to the device.

Proposal to amend UN R86 on data storage and event data recorder requirements:

• Insert new para. 0.4. to introduce Supplement 1 to the 02 series of amendments to account for vehicles of categories X and Y and vehicles which can be operated either by a driver or an ADS
• Amend para. 1.1. footnote 1 to add a document reference
• Amend para. 1.3. to exclude VIN, associated vehicle details, location/positioning data, information about any user, date and time of an event from scope
• Amend paras. 2.16., 2.23., 2.29., 2.30., 2.37., 2.38., 2.55., 2.56., 2.58., 2.66., and 2.67. to revise definitions
• Insert new footnote 2
• Amend para. 4.4. to revise the approval mark
• Amend Annex 3 to update arrangements of approval marks
• Renumber footnote 2 to footnote 3 in para. 4.4.1. and amend its text
• Renumber footnote 3 to footnote 4 in para. 11.
• Amend Annex 4 to modify data elements and format requirements

This status report from GRE TF AVSR discusses development of a Hybrid Regulation on ADS Marker Lamps for power-driven vehicles. The TF addresses colour specifications aligned with SAE J3134 and ECE R65 standards. Key open questions for GRE guidance include: whether pulsating luminous intensity patterns should be permitted; potential conflict with the 1968 Vienna Convention on Road Traffic; application to platooning trucks and agricultural vehicles; inclusion of L₆ and L₇ categories; mandatory versus optional rear installation; variable luminous intensity based on environmental conditions; side marker lamp integration possibilities; and reciprocal incorporation with other lamps.

Proposal to insert new paras. 0. and 0.1. to 0.1.4. introducing vehicles of categories X and Y and vehicles with manual modes or automated driving systems, amend para. 1(a) footnote 1, para. 2.13., para. 2.25., paras. 5.4.1. and 5.11.1. footnote 2, insert new para. 2.40. defining “Safety Concept”, amend para. 6.2., para. 7., para. 8.2.1.1., Annex 1A para. 5.1., Annex 3 footnote 18, Annex 21 title, Annex 22 title, and Annex 24 including its scope, definitions, and provisions for safety glazing installation on vehicles. This proposal is based on GRSG-131-23-Rev.1.

Proposal to account for vehicles of categories X and Y and vehicles with manual mode operating above 6 km/h equipped with an Automated Driving System, clarify scope exclusions, define “Safety Concept,” update references to the Consolidated Resolution on the Construction of Vehicles, establish that indirect vision requirements do not apply during active ADS features, and permit alternative requirements for category X vehicles with on-board manual operation not using a driver’s seat.

Proposal to enable application of UN R55 to vehicles of categories X and Y and vehicles with a manual mode operating at speeds above 6 km/h equipped with an Automated Driving System, insert footnote 1 defining these vehicle categories, amend Annex 5 paragraph 7.4. to require that release of fifth wheel coupling locking devices require intentional action by the driver or operator or by ADS and that engagement status be transmitted as a logic signal to ADS, amend paragraph 10.4. to require that engagement status be transmitted as a logic signal to ADS, amend paragraph 13.2. to reference remote indication for the driver or operator, amend paragraph 13.2.8. to provide for automatic reactivation when the coupling is next opened and closed, amend paragraph 13.3.3. to clarify indication to the driver or operator of conditions under which external force acts on the coupling, and insert new paragraph 13.4. requiring transmission of a logic signal to ADS indicating at least the closed and doubly locked position of the coupling.

Proposal to insert new paras. 0. and 0.1. introducing Supplement 2 to account for vehicles of categories X and Y and vehicles with a manual mode operating at speeds above 6 km/h equipped with an Automated Driving System, and amend para. 1., footnote 1, to reference the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document ECE/TRANS/WP.29/78/Rev. 8, para. 2.