Revised proposal, superseding the original proposal, to clarify the wording regarding the use of the reference fuel required for emission testing, to permit testing with the same reference fuel used for emission testing, and to align with recently adopted amendments to Regulation No. 85.

Proposal to extend to the 05 series of amendments the option from the 06 and 07 series to use the calculation of road load values determined according to UN GTR 15 (WLTP).

Proposal to amend the charger requirement and the measurement method of REESS current for a hybrid electric power train in order to align UN R101 with the provisions in UN R154 and introduce the option to determine road load values for Pure Electric Vehicles according to the requirements of UN R83.

Proposal to permit the use of hydrogen (H2) as fuel for emissions type approval of heavy-duty vehicles.

Proposal to permit the use of hydrogen (H2) as fuel for emissions type approval of heavy-duty vehicles.

Proposes some amendments to working document ECE/TRANS/WP.29/GRPE/2024/8 introducing change stop footnotes to Table A3/1 and makes changes to the transition provisions

Proposal to align with UN R154

Proposal to amend ECE/TRANS/WP.29/GRPE/2024/12

Request for a half-day workshop in May 2024 (GRPE 91)

Proposal to amend the scope to allow type approval of vehicles that previously where only within the scope as an extension based on their reference mass.

Proposal to amend the scope to allow type approval of vehicles that previously where only within the scope as an extension based on
their reference mass.

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.

Proposal for amendment to 2024/23, OICA proposal to transpose the content of UN GTR No. 21 into a new UN Regulation of the 1958 Agreement.

Proposal to delete the PEMS PM number from 06 series of amendments.

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

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.

Proposal concerning the approval of the wind tunnel facilities.

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

Proposal to amend UN R83 by deleting Annex 1, paragraph 3.4.3. and renumbering paragraphs 3.4.3.1., 3.4.3.1.1., 3.4.3.1.2. and 3.4.3.1.3. to read 3.4.3., 3.4.3.1., 3.4.3.2. and 3.4.3.3., and deleting Annex 2, paragraph 1.9.2. The concept of “Operating Mode Switch” has been removed from the Regulation and these two paragraphs were omitted from this removal and should be deleted from both the manufacturer’s information document and the addendum to the approval certificate.

Proposal on the clarification for the definition of vehicle types and families.

Proposal for amendments to include OBFCM provisions

Proposal to amend ECE/TRANS/WP.29/GRPE/2025/18