Devices for monitoring on-board vehicle consumption of fuel and/or electric energy shall determine and store lifetime values of fuel consumed, distance travelled, and energy parameters specified in Appendix 5. Type-approval requires testing per Table A according to vehicle category and fuel type, including Type 1 emissions tests, evaporative emissions tests, durability, OBD checks, and OBFCM accuracy verification. Manufacturers must ensure OBFCM accuracy between −0.05 and +0.05 calculated using specified formulae comparing WLTP-determined and OBFCM-measured consumption. Conformity of production requires periodic testing and audits. Lifetime counter values shall be preserved from 1 January 2029 for new vehicle types; from 1 January 2030, type approvals for non-compliant vehicles shall not be accepted. OBFCM devices must provide standardised, unrestricted access to information via specified ISO and SAE standards.

Proposal to introduce new regional requirements from Contracting Parties, in particular from Euro 7 in the EU, including new particle number (PN10) provisions, a new SHED limit for evaporative emissions, updated On-board Fuel Consumption Monitoring provisions, and new annexes with requirements relating to in-vehicle battery durability and a new test for range of Pure Electric Vehicles at low temperatures for UN R154 (Worldwide harmonized Light vehicles Test Procedures (WLTP)).

GRBP, GRE, GRPE, GRSG, GRSP, and GRVA are ready with working documents on non-ADS regulation amendments. TF AVRS is working on ADS marker lamps. UNECE published 93 amendment proposals regarding ADS fitness and ADS UNR and GTR for the 199th session of WP.29 in June 2026. UN R168.00 is tabled for the 200th session of WP.29. UN R154 former series is postponed to GRPE-95 in October 2026. Y category passive safety regulation is planned for GRSP-80 in December 2026.

This proposal updates provisions for automated vehicles and automated driving systems.

Proposal for change in transitional provisions to take into considerations of the lifetime value retention status

Proposal clarifies the OBFCM requirements

Review of the different proposed amendments (03/04 series with different Supplements) to the regulations

Current status of calculation method and component dynamometer tests

Proposal brings clarity to references and to correct copy & paste mistakes and possible misinterpretations related to in-vehicle battery durability and low
temperature.

Proposal clarifies the text relating to On-Board Diagnostics (OBD)

This Supplement proposes to update UN R154 to accommodate vehicles fitted with Automated Driving Systems (ADS), specifically categories X and Y. Amendments include new definitions for ADS-related terms, modifications to testing procedures, and updated references to vehicle construction standards. Driver-related systems are renamed to account for vehicles without human drivers. Special provisions establish requirements for ADS road load determination and testing modes, while messaging systems are adapted to send signals to ADS instead of or in addition to driver notifications.

Proposal to enable the approval of vehicles equipped with an Automated Driving System under this Regulation.

Proposal to introduce provisions relating to

• Manipulation Devices and Strategies that were previously in the 09 series of amendments to UN R83,
• the levels to which certain provisions apply,
• clarifications and corrections to the requirements for the laboratory test for pure electric range ratio at low temperature for Pure Electric Vehicles
• an update to allow the use in Levels 1A and 2 of actual tyre rolling resistance values to calculate the final road load coefficient for the individual vehicles, and
• align the Regulation with the current regional status and the current state-of-the-art.

Proposal to enable approval of vehicles equipped with an Automated Driving System under this Regulation.

Proposal to harmonise and consolidate the regional procedures and limits, update the provisions to align with Euro 7 requirements, including new particle number (PN10) provisions, a new SHED limit for evaporative emissions, updated On-board Fuel Consumption Monitoring provisions, new annexes with requirements relating to in-vehicle battery durability and a new test for range of Pure Electric Vehicles at low temperatures. An informal document amending this proposal is under development.

Proposal to harmonise and consolidate the regional procedures and limits, update the provisions to align with Euro 7 requirements, including new particle number (PN10) provisions, a new SHED limit for evaporative emissions, updated On-board Fuel Consumption Monitoring provisions, new annexes with requirements relating to in-vehicle battery durability and a new test for range of Pure Electric Vehicles at low temperatures. An informal document amending this proposal is under development.

Proposal drafted after the session to amend UN Regulation No. 154 to insert a new paragraph recognising vehicles of categories X and Y fitted with Automated Driving Systems, amend definitions including “Mass in running order”, “Powered axle”, “Reference mass”, “Driver User-selectable mode”, “Predominant mode”, and “Configurable start mode”, insert new definitions for “ADS road load determination mode” and “ADS testing mode”, amend the On-Board Diagnostic system definition, amend footnotes and tables relating to road load matrix families and OBD families, insert special provisions for vehicles of categories X and Y in road load determination and chassis dynamometer testing procedures, amend provisions for driver reagent warning and inducement systems, amend testing procedures in Annexes relating to pollutant emissions, CO2 emissions, fuel consumption, and electric energy consumption, insert requirements for ADS testing mode and ADS road load determination mode in Annexes A1, B4, B6, C3, and C4, and amend OBD system provisions in Annex C5 to account for ADS operation.

Proposal to introduce provisions relating to Manipulation Devices and Strategies which were previously in the 09 series of amendments to UN R83.

In-session changes to original version.

Proposal to amend Annex B4, para. 4.2.1.1.1. to specify vehicle H selection without interpolation based on highest cycle energy demand and wheel selection criteria, amend para. 4.2.1.1.2. to permit optional interpolation method using two test vehicles or one vehicle tested twice with specified configurations, amend para. 4.2.1.5. to specify operation of movable aerodynamic body parts during road load determination, amend para. 4.2.2.1. to establish tyre rolling resistance measurement according to UN R117 02 series amendments and introduce Table A4/2 with rolling resistance classes and coefficients for C1, C2 and C3 tyres, amend para. 4.3.1.4.3. to establish rejection criteria for road load measurements not exceeding one-third of total measurement pairs and data evaluation procedures, amend para. 6. heading to include optional procedures for road load determination and calculation, amend para. 6.8. to permit optional measurement of friction differences on component or suitable dynamometer, add new paras. 6.9. to 6.10.1.1. to establish component dynamometer test procedures and optional calculation method for road load based on base vehicle measurement and technical vehicle parameters, and amend Annex B7 paras. 3.2.3.2.2.2.2. and 3.2.3.2.2.4. to reference Table A4/2 rolling resistance classes and permit optional calculation using actual tyre rolling resistance values.

Proposal to align the manufacturer information document with the type-approval
certificate and to clarify that compliance with a limit measured according to PN10 demonstrates compliance with the same limit according to PN23.

Consolidated revision to make corrections, clarifications and improvements that have already been introduced into the 02 and 03 series of amendments of UN R154. The proposal is based on document GRPE/2024/2, GRPE-90-11-Rev.1, and GRPE-91-11 PEV run-in provisions only). Proposal to align the manufacturer information document with the type-approval certificate, adapt the calibration of measurement equipment to PN10 (which measures more particles than PN23), and clarify that compliance when measured according to PN10 demonstrates compliance with the same limit according to PN23.

Proposal to align the manufacturer information document with the type-approval certificate, make corrections, clarifications and improvements that have already been introduced into the 02 and 03 series of amendments of UN R154, and clarify that compliance with a limit measured according to PN10 demonstrates compliance with the same limit according to PN23.

Proposal to amend additive deterioration factors and the PEV run-in requirement, to align the manufacturer information document with the type-approval certificate, to clarify that compliance with a limit when measured according to PN10 demonstrates compliance with the same limit according to PN23, and to effect corrections and editorial improvements.

Proposal for a new UN Regulation for Uniform provisions concerning the approval of light duty passenger and commercial vehicles with regards to On-board monitoring (OBM) systems, environmental vehicle passport (EVP) and in-vehicle display of environmental data. An informal document amending this proposal is under development.

Proposal to harmonise and consolidate the regional procedures and limits, update the provisions to align with Euro 7 requirements, including new particle number (PN10) provisions, a new SHED limit for evaporative emissions, updated On-board Fuel Consumption Monitoring provisions, new annexes with requirements relating to in-vehicle battery durability and a new test for range of Pure Electric Vehicles at low temperatures. An informal document amending this proposal is under development.

Small Volume Manufacturers (SVMs) are defined as manufacturers producing fewer than 10,000 M1 or 22,000 N1 vehicles annually in the European Union. Ultra Small Volume Manufacturers (USVMs) produce fewer than 1,000 vehicles annually. SVMs receive exemptions from certain systems and testing requirements, including OBM, EEEDWS, and OBFCM installations for M1 and N1 vehicles. Type approvals granted before July 1, 2030 remain valid. In-service conformity checks are not mandatory for SVMs.

Calibration of measurement equipment to PN10 measures more particles than calibration to PN23. It is therefore logical that compliance with a limit when measured according to PN10 demonstrates compliance with the same limit according to PN23 but this text should be added for legal certainty.

Proposal to introduce optional calculation method for determining f₀ and f₂ road load coefficients, allow measurement of drivetrain delta on component dynamometer, permit evaluation of split runs to increase data base, and enable test vehicle configuration using interpolation method. The calculation method determines final f₀ and f₂ values considering theoretical delta between coast down vehicle and final vehicle. Component dynamometer measurement increases accuracy because not all combinations of road load relevant components can be assembled, allowing all component combinations to be evaluated independently.

Annex to GRPE 92-08

Proposal concerning the approval of the wind tunnel facilities.

Proposal to bring clarity in the text relating to On-Board Diagnostics (OBD).

Review on the possible direction
(1) new series of amendment
(2)single series structure

Draft proposal to align UN R154 with the latest regional requirements (e.g., Euro 7).

Draft presentation to request GRPE review and decision on the update of UN R154 to integrate Euro 7 provisions either as two series of amendments or possibly via a single series.

Draft proposal to align the Regulation with the latest regional requirements (e.g., Euro 7) as submitted to GRPE (Informal document GRPE-92-09e).

Working draft with tracked changes and comments.

Consolidated revision to make corrections, clarifications and improvements that have already been introduced into the 02 and 03 series of amendments of UN R154. The proposal is based on document GRPE/2024/3, GRPE-90-11-Rev.1, and GRPE-91-11 PEV run-in provisions only).

Proposal to amend additive deterioration factors and the PEV run-in requirement and to effect corrections and editorial improvements.

Consolidated revision to make corrections, clarifications and improvements that have already been introduced into the 02 and 03 series of amendments of UN R154. The proposal is based on document GRPE/2024/2, GRPE-90-11-Rev.1, and GRPE-91-11 PEV run-in provisions only).

Proposal to align the manufacturer information document with the type-approval
certificate.

Proposal brings clarity in the text relating to alternative procedures for demonstrating Conformity of Production of evaporative emissions control systems and consistency in the rounding of the Deterioration Factors (DFs). It also proposes an amendment to the formatting of a paragraph relating to Speed Trace Tolerances in order to bring clarity.

Updates to GRPE/2024/10

Proposal to incorporate corrections, clarifications, and improvements to the 01 series of amendments to UN R154 that have already been introduced in the 02 and 03 series of amendments to the Regulation.

Proposal to amend Additive Deterioration factors in line with changes to corresponding regional provisions prompted by potential manipulation observed in the region and scheduled for introduction from October 2024.

Proposal to amend Additive Deterioration factors in line with changes to corresponding regional provisions prompted by potential manipulation observed in the region and scheduled for introduction from October 2024.

Proposal to incorporate corrections, clarifications, and improvements to the text of UN R154 that have already been introduced in the 02 and 03 series of amendments to the Regulation.

Proposal to align the Regulation with the latest regional requirements.

Proposal to align the Regulation with the latest regional requirements.

Proposal to align the Regulation with the latest regional requirements.

Proposal to align the Regulation with the latest regional requirements.

Proposal to harmonize the requirements of the 00, 01, 02 and 03 series of amendments to UN R154 based on the following justifications:

1. Correction of a wrong reference. In Paragraph 3. the functional requirements for the OBD system are included. Paragraph 4. describes the requirements relating to type-approval including the provisions for deficiencies.
2. For Series 02 and 03, SAE J 1979-2 was allowed as a standard for the transmission of OBD relevant information. ISO 14229 was removed from the list of allowed standard. This proposal aligns series 00 and 01 with series 02 and 03.
3. The standards used for transmission of OBD information are maintained by international standardisation bodies (ISO, SAE). The standardisation body maintaining the affected standard has to be informed.
4. Alignment of wording between the first sentence of paragraph 3.2.1.2. (“ambient or engine temperatures”) and the second sentence, where “or engine” was missing to avoid misunderstanding and ambiguity. Engine temperature is sometimes used as a substitute for ambient temperature. In this case, the engine temperature is evaluated once after a longer engine shut off phase. Only in this case an approval is necessary, as this is the only case, where an OBD monitor is disabled for the complete trip.
5. The OBD requirements for Diesel engines in Paragraph 3.3.4 of Annex C5 are limited to Level 1A. The requirements in paragraphs 6.3. (“Failure modes to be tested”) and 6.4. (“OBD system test”), are not limited to Level 1A. This proposal corrects this.
6. Align Paragraph 6.5.1.3. with GTR No.15 to avoid ambiguity.
7. Alignment with Series 01/03. Those allow the use of alternative preconditioning
   methods for Level 2.

Background: Manufacturers design OBD monitoring conditions and functionalities for market specific driving conditions. Reliable monitors need enable conditions, which run the OBD monitors under circumstances, where failure detection works properly. Those enable conditions are not for all monitors represented by a three-phase WLTC, e.g. some monitors require higher load conditions. For those monitors alternative preconditioning methods are necessary.

Additional information concerning the 08 series of amendments pursuant to UN R154 (WLTP) and work on real-driving emissions testing.

The current format of the type approval mark illustrated in Annex A3 is not consistent with the requirements of Section 5.2.1, which may unintentionally lead to approval marks not being issued or accepted in the correct format. The proposed amendment to Annex A3 aligns the illustrated approval marks with the requirements of Section 5.2.1 and Schedule 4 of Revision 3 of the 1958 Agreement. This proposal is available with tracked changes in a pdf version and in a .docx format.

This proposal introduces the new Utility Factor (UF) approach proposed in the Euro 6e emissions type-approval legislation. In addition, as a result of the application of the new tyre labelling Regulation (EU) 2020/7401, this proposal introduces a revised format of the table with tyre energy efficiency classes according to rolling resistance coefficients (RRC), in-line with the format proposed in the Euro 6e emissions type-approval legislation.

This proposal introduces the new Utility Factor (UF) approach proposed in the Euro 6e emissions type-approval legislation. In addition, as a result of the application of the new tyre labelling Regulation (EU) 2020/7401, this proposal introduces a revised format of the table with tyre energy efficiency classes according to rolling resistance coefficients (RRC), in-line with the format proposed in the Euro 6e emissions type-approval legislation.

• UN R154
• Current status regarding reviewing Japan proposal on CoP section
• Current status regarding reviewing Japan proposal on PHEV calculations

• GTR 15: Annex 13
• Current status regarding GTR No.15 Annex 13

Proposal for corrections and clarifications to the amendments in WP.29/2022/41/Rev.1 based on GRPE/2021/21 addressing particle number emissions, including handling of electric vehicles and Conformity of Production.

Proposal for corrections and clarifications to the amendments in WP.29/2022/42/Rev.1 based on GRPE/2021/21 addressing particle number emissions, including handling of electric vehicles and Conformity of Production.