10 Jan 2018 Development of Japan's Real Driving Emissions procedure (MLIT and Japan) GRPE-76-18 2018-01-10 MLIT Japan
13 Jun 2018 RDE: Proposed terms of reference for informal group GTR development (EC, Japan, and Korea) GRPE-77-15 2018-06-13 EC Japan Korea
10 Jan 2019 RDE: Proposal for the Terms of Reference and rules of procedure for the informal group (EU, Japan, and Korea) GRPE-78-24 2019-01-10 EU Japan Korea
11 Jun 2020 RDE: Proposal for revision to proposed UN Regulation on real driving emissions (GRPE/2020/15) (EC and Japan) GRPE-81-16 2020-06-11 Document also available in PDF and word versions with track changes http://www.unece.org/fileadmin/DAM/trans/doc/2020/wp29grpe/GRPE-81-16e_track.pdf http://www.unece.org/fileadmin/DAM/trans/doc/2020/wp29grpe/GRPE-81-16e_track.docx EC Japan
4 Jun 2021 Real driving Emissions: Revised request for authorization to develop a GTR (EU, Japan, Korea, and USA) GRPE-83-32 2021-06-04 Proposal by the USA, European Union, Japan and the Republic of Korea to request revision of the authorization to develop a future proof global technical regulation of Real Driving Emissions based on Phase 2 work by the RDE informal working group. EU Japan Korea USA
25 Oct 2024 UN R168: Proposal for amendment (Japan) GRPE-91-09/Rev.1 2024-10-25 Proposal aims to clarify and align the provision of PEMS concentration and emission correction with UN Regulations as common provision Japan
17 Oct 2025 UN R168: Proposal for amendments (excluding Level 1C) (EC, Japan, OICA, and UK) GRPE-93-52 2025-10-17 EC Japan OICA UK
1 Apr 2020 RDE: Proposal for a new UN Regulation on uniform provisions concerning the approval of light duty passenger and commercial vehicles with regards to real driving emissions (RDE) (Japan and EC) GRPE/2020/15 2020-04-01 Proposal from the European Commission and Japan for a new UN Regulation based on discussions with the Informal Working Group on Global Real Driving Emissions. Japan EC
2 Nov 2022 RDE: Proposal for a new UN Regulation on the approval of light duty passenger and commercial vehicles with regard to real driving emissions (EC and Japan) GRPE/2023/3 2022-11-02 Proposal to update the previously adopted text (GRPE/81/Add.2 and in document WP.29/2020/120) with changes introduced into European legislation on RDE. This document is available with tracked changes in <a href="https://unece.org/sites/default/files/2022-10/GRPE-2023-3e_tracked.pdf" target="_blank">pdf version</a> and <a href="https://unece.org/sites/default/files/2022-10/GRPE-2023-3e_tracked.docx" target="_blank">docx format</a>. EC Japan
6 Nov 2025 IWVTA: Small-Volume Manufacturers (SVM) (Japan) IWVTA-49-06 2025-11-06 Japan
20 Feb 2020 Japan comments on draft RDE GTR version 8 (Japan) RDE-09-05 2020-02-20 Japan
20 Feb 2020 Japan comments on the draft RDE UN Regulation version 8 (Japan) RDE-09-06 2020-02-20 Japan
23 Sep 2020 RDE: Comments on the draft GTR (Japan) RDE-13-01 2020-09-23 Japan
1 Oct 2020 Input for the draft GTR on RDE (Japan) RDE-14-01 2020-10-01 Japan
17 Sep 2025 UN R168: Comments on the proposed 01 series of amendments (Japan) WLTP-AH-LDN-12 2025-09-17 Japan
14 Mar 2018 RDE: Japan comments on harmonization (Japan) WP.29-174-17 2018-03-14 Japan comments in relation to the EU submission WP.29-174-09. Japan
22 Jun 2018 RDE: Updated proposal for a new GTR (EU, Korea, and Japan) WP.29-175-32 2018-06-22 Update of document WP.29/2018/80. EU Korea Japan
12 Apr 2018 Request for authorization to develop a new UN GTR on Global Real Driving Emissions (EU, Japan, and Korea) WP.29/2018/80 2018-04-12 Proposal to establish a WP.29 program to develop a UN GTR specifying a methodology for determining the real driving emissions of light-duty vehicles based on the European RDE methodology appropriately adapted for specific regional traffic conditions and boundaries. EU Japan Korea
12 Apr 2018 Request to list Japan’s Real Driving Emissions (RDE) methodology in the compendium of candidate Global Technical Regulations (Japan) WP.29/2018/81 2018-04-12 Japan
6 Apr 2023 Proposal for a five-year extension in the Compendium of Candidates of Listing No. 15 (Japan) WP.29/2023/83 2023-04-06 Proposal to reaffirm Japan’s Real Driving Emissions (RDE) Methodology. Japan