Results of the review of proposals for UN Regulations R28, R51, R64, R138, R141, R142, and R165 regarding autonomous vehicle readiness. Key findings include: inconsistent Mass in Running Order definitions between R51 and R138 versus RE3; unclear special testing provisions in R64, R138, and R165; need for clarification on ADS optical and logical signal transition in R64; redundant full definitions from RE3 in multiple proposals should reference RE3 via footnote instead; inconsistent ADS activity terminology across R64, R141, and R165 should be standardized; incorrect Category Y references in R51 Table 2; and definition and spelling errors in R51, R138, R141, and R165.

The proposal adds Annex 5 on special provisions for testing vehicles equipped with an Automated Driving System (ADS) and adds definitions for ADS, Dynamic Driving Task, Category X and Y vehicles, logical signal, and Vehicle Master Control Switch. Amendments modify run-flat warning system requirements, braking performance tests, and tyre detection procedures to accommodate ADS-equipped vehicles.

A version showing the changes is also available.

Proposal to enable the application of the Regulation to vehicles equipped with automated driving systems (ADS).

Proposal to modify para. 2.13. to define “Run-Flat Warning System” to deliver information to the driver or the ADS, modify para. 5.1.6.1. to require optical yellow warning signals to the driver and logical signals to the ADS when an ADS feature is active, modify para. 5.1.6.3. to require warnings indicated to the ADS by logical signal when an ADS feature is active, modify para. 5.1.6.4. to require logical signals to the ADS for electrical failure or sensor anomaly when an ADS feature is active, modify para. 5.1.6.5. to require description in the owner’s manual of corrective action expected by the ADS, modify para. 5.1.7. to exempt vehicles of categories X and Y from inflation device requirements, modify para. 6.1.2.2. to require instructions on informing the ADS of temporary-use spare unit fitting, modify Annex 3 para. 2.2. and 2.3. to apply special provisions for ADS vehicles, modify Annex 4 paras. 2.1. and 2.2. to apply special provisions for ADS vehicles, and add Annex 5 specifying test adaptations for ADS vehicles.

The Task Force on Automated Vehicle Regulation Screening held its 18th session on 2 October 2025. The agendas and reports of the 17th session were adopted. Regarding a proposal for a supplement to Regulation No. 64, the Task Force noted the need to harmonize wording for ignition on/initiation of the powertrain across regulations, discussed corrective action by the ADS, exceptions for vehicles of category X and Y, incorporation of “drive with caution” for vehicles with ADS, and fitting spare units. Regarding a proposal for a supplement to Regulation No. 142, the Task Force considered logical signal requirements and informing the ADS about tyre speed limits. The next meeting is scheduled for 29 November 2025.

The Task Force on Automated Vehicle Regulation Screening will hold its 18th session on 2 October 2025 from 09:00 to 11:00 CET via MS Teams. The agenda includes adoption of the agenda and report of the 17th session, consideration of proposals for supplements to Regulation No. 64 and Regulation No. 142, and discussion of next meetings.

Proposal for a reference document concerning a general approach for how to handle measurement uncertainties under UN Regulations within the purview of GRBP.

Proposal from expert from France for amendment to Supplement 1. Tyre pressure monitoring system (TPMS) could refer to UN R64 (till 02 series of amendment) and/or R141.
R64 series 02 concerns temporary use spare unit, run-flat tyres and/or a run-flat system and/or a tyre pressure monitoring system for M1 or N1 category vehicles. R141 is dedicated M1-category vehicles approved for their TPMS

Proposal to amend UN R64 in line with the introduction of the “extended mobility tyre” into UN R30 (see document WP.29/2019/50).

ETRTO response to UK question on the availability of extended mobility tyres (EMT) on the market.

Proposal to amend UN R64 in line with the introduction of the “extended mobility tyre” into UN R30 (see document GRVA/2018/6). This document will be handled by GRB during its 68th session and is referenced under GRVA due to the “conversion” of GRRF.

Discussion of run-flat tyres and extended mobility tyres (EMT) in support of a general proposal to establish approval procedures for EMT under UN R30 and include EMT as “emergency mobility equipment” under UN R64. The proposal makes reference to recent activity on ISO 16992 regarding EMT test protocols.

Introductory statement to document GRRF-86-04 proposing amendments in order to provide a legal approval framework for extended mobility tyres under UN R30 and their recognition as “emergency mobility equipment” under UN R64.

Proposal to remove tyre pressure monitoring systems from UN R64 pursuant to establishing a stand-alone regulation and to facilitate the development of the regulation on international whole vehicle type approvals.

Review of work towards adapting and/or approving certain UN Regulations for use within the International Whole Vehicle Type Approval regulation.

Revised version of document GRRF/2016/4, proposing to extract tyre pressure monitoring systems from UN R64, pursuant to the discussions held during the February 2016 GRRF session.

Revised version of document GRRF/2016/5, proposing a new UN Regulation based upon provisions for tyre pressure monitoring systems extracted from the current UN R64, pursuant to the discussions held during the February 2016 GRRF session.

Proposal for a new UN Regulation based upon the provisions for tyre-pressure monitoring systems (TPMS) extracted from UN R64 in order to facilitate the application of UN R64 within the International Whole Vehicle Type Approval system. This proposal also seeks to take into account efforts to update US FMVSS requirements for TPMS.

Proposal for a revised UN R64 that removes the provisions for tyre-pressure monitoring systems (TPMS) (to be reproduced in a new separate regulation) in order to facilitate the application of UN R64 within the International Whole Vehicle Type Approval system.

Proposal for a separate TPMS regulation, removing the Tyre Pressure Monitoring System provisions out of UN R64, in order to facilitate the establishment of the International Whole Vehicle Type Approval system. It is based on document GRRF/2015/13 taking into account the comments received at GRRF-78.

Draft proposal for a revised UN R64, removing the type-pressure monitoring systems provisions, in order to facilitate its use in the International Whole Vehicle System.

The overall aim of the study is to propose policy options concerning the use of tyres for improvement of traffic safety. Centrally to this, is the idea that end users need to make the correct assessment in relation to the tyre condition in order to achieve a level of safety as high as possible. Within this context, the tyre condition is considered in relation to technical elements (tyre inflation pressure, tyre tread depth, tyre damage, tyre age, and meteorological influences) and one information element (driver awareness). The study addresses the topics of tyre usage and the impact on road safety (which are the potential safety improvements related to tyre usage from a technical perspective) and how can road users be supported to use tyres that have a better safety performance by policy options.

This document represents the result of analysis of the existing (document GRRF/2015/12) and newly introduced (GRRF-79-09) transitional provisions concerning the separation of tire-pressure monitoring systems from UN R64.

Proposal to remove tire-pressure monitoring provisions from UN R64 to enable the use of UN R64 within the International Whole Vehicle Type Approval system.

Revised text proposing a stand-alone TPMS regulation based upon the provisions currently in UN R64.

Proposal to separate provisions for tire-pressure monitoring systems from UN R64.

Proposed text for a new UN Regulation that would comprise all the tyre-pressure monitoring system (TPMS) provisions presently contained in UN Regulation No. 64. This separation is proposed to facilitate the use of UN R64 in the international whole vehicle type approval system under development.

Proposal to delete references to tire-pressure monitoring systems under UN R64 (with the intention to establish them as a stand-alone regulation). This document presents only the amendments and complements the earlier document GRRF-78-38 that presented the consolidated version of UN R64 amended as proposed here.

This proposal was prepared by OICA and is based on the existing UN Regulation No. 64. It is aimed at moving the Tyre Pressure Monitoring System provisions into a separate Regulation.

This proposal was prepared by OICA and is based on the existing UN Regulation No. 64. It is aimed at moving the Tyre Pressure Monitoring System provisions in a separate Regulation.

Introduction to a new EC-sponsored research project into the impact of tire-pressure monitoring systems in reducing fuel consumption and CO2 emissions of commercial vehicles.

Draft questionnaire destined for TPMS manufacturers and developed for the study of TPMS in the reduction of commercial vehicle fuel consumption and CO2 emissions.

Questionnaire destined for tire manufacturers and developed for the study of TPMS in the reduction of commercial vehicle fuel consumption and CO2 emissions.

Questionnaire destined for vehicle manufacturers and developed for the study of TPMS in the reduction of commercial vehicle fuel consumption and CO2 emissions.

Text adopted by the Working Party on Brakes and Running Gear (GRRF) at its seventy-second session inserting a reference to Regulation No. 54 into Regulation No. 64 and adapting the speed limit of type 4 spare units.

Text prepared by the GRRF chairman based on document GRRF/2009/10 and pursuant to agreements by GRRF at its 65th session. The unresolved issues are shown in square brackets.

OICA position on the draft proposal for a regulation on tire-pressure monitoring systems.

OICA-proposed corrections to the draft regulation on tire-pressure monitoring systems.

Presentation on an EU-supported study concerning tire-pressure monitoring systems, low rolling resistance tires, tire wet grip, vehicle safety, CO2 reduction, vehicle noise, and “eco-labeling”.

ETRTO comments on the draft TPMS regulation concerning the definition of correct tire inflation levels.

OICA-proposed amendments to the draft regulation on tire-pressure monitoring systems.

Text was prepared by the informal group on tyre pressure monitoring systems (TPM) and transmitted to the Working Party on Brake and Running Gear (GRRF) by the Chairperson (Germany).

German informal document GRRF-63-23 proposing a new regulation on “uniform provisions concerning the approval of time-based tyre pressure loss reminder systems (TBW) and tyre-pressure monitoring systems (TPMS) and tyre leak alerting systems for motor vehicles”.

Summary of the report and pursuant discussion of the progress of the informal group on tire pressure monitoring systems.

Guiding principles behind the establishment of UNECE regulations.

Public consultation on outline proposals for a Regulation of the European Parliament and of the Council on Advanced Safety Features and Tyres: background document explaining interest in electronic stability controls, tire pressure monitoring systems, and tire low rolling resistance.

TPMS Motivations; Principles of tire pressure monitoring systems (TPMS); Impact Factors for Direct TPMS; Impact Factors for Indirect TPMS; CO2 and TPMS; Effect on other regulations

OICA proposal on terms of reference for the TPM informal group.

TBW, a TPMS alternative, CO2 reduction by correct and constant tyre pressure as a first step, proposal for justification.

ETRTO presentation on run-flat tires and run-flat warning systems in relation to UNECE R64.

Presentation providing background and justifications for global TPMS regulation.

Draft guidelines for the scope and mandate of the informal working group on tire pressure monitoring systems, based upon an original proposal prepared by OICA.