Proposal to enable the approval of dual-fuel hydrogen (H2) engines of Type 1A for
installation in agricultural and forestry tractors and in non-road mobile machinery and to correct errors in the Regulation.

Proposal for amendments to ECE/TRANS/WP.29/GRPE/2026/24

GRPE held its ninety-fourth session from 17 to 19 March 2026 in Geneva. GRPE adopted proposals for draft supplements and amendments to UN Regulations Nos. 68, 83, 154, 49, 24, 85, 115, 133, 143, 177, 96, and ¹⁷⁹, and to UN GTRs Nos. 21, 22, and 25, requesting secretariat submission to WP.29 and AC.1 or AC.3 for consideration and vote at their June or November 2026 sessions. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/27 and requested secretariat submission to WP.29 for consideration at its November 2026 session as draft new Revision 2 to M.R.3. GRPE agreed to postpone consideration of certain proposals to forthcoming sessions. The next GRPE session is scheduled for 14–16 October 2026.

Proposal to:

• Insert new Appendix A.7 to Annex 4 for the procedure for the measurement of water (H₂O),
• Insert new Annexes 11 and 12 with their appendices for dual-fuel engines with hydrogen as a main fuel,
• Insert new paragraphs 2.1.102 and 2.1.103 defining “Instrument manufacturer” and “Type of analyser”,
• Add new rows to the abbreviations table in paragraph 2.2.2,
• Amend paragraph 3.1.1 to include dual-fuel engines of Type 1A with hydrogen as a main fuel,
• Amend paragraphs 5.6.4, 6.1.4, 8.7.2.3, and multiple appendix paragraphs to accommodate hydrogen-fuelled and dual-fuel engines,
• Amend Table 27 to include dual-fuel hydrogen engines,
• Insert new paragraphs 8.1.13 and 8.1.14 for FTIR and QCL-IR interference checks,
• Insert new paragraphs 9.4.13, 9.4.14, and 9.4.15 specifying requirements for FTIR and QCL-IR analysers,
• Add new Appendix A.7 describing procedures for H₂O measurement using QCL-IR or FTIR analysers,
• Amend Annex 5 title and various paragraphs.

Proposal to enable the approval of dual-fuel hydrogen (H2) engines of Type 1A for
installation in agricultural and forestry tractors and in non-road mobile machinery and to correct errors in the Regulation.

Proposal for amendments to ECE/TRANS/WP.29/GRPE/2026/24

GRPE held its ninety-fourth session from 17 to 19 March 2026 in Geneva. GRPE adopted proposals for draft supplements and amendments to UN Regulations Nos. 68, 83, 154, 49, 24, 85, 115, 133, 143, 177, 96, and ¹⁷⁹, and to UN GTRs Nos. 21, 22, and 25, requesting secretariat submission to WP.29 and AC.1 or AC.3 for consideration and vote at their June or November 2026 sessions. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/27 and requested secretariat submission to WP.29 for consideration at its November 2026 session as draft new Revision 2 to M.R.3. GRPE agreed to postpone consideration of certain proposals to forthcoming sessions. The next GRPE session is scheduled for 14–16 October 2026.

Proposal to:

• Insert new Appendix A.7 to Annex 4 for the procedure for the measurement of water (H₂O),
• Insert new Annexes 11 and 12 with their appendices for dual-fuel engines with hydrogen as a main fuel,
• Insert new paragraphs 2.1.102 and 2.1.103 defining “Instrument manufacturer” and “Type of analyser”,
• Add new rows to the abbreviations table in paragraph 2.2.2,
• Amend paragraph 3.1.1 to include dual-fuel engines of Type 1A with hydrogen as a main fuel,
• Amend paragraphs 5.6.4, 6.1.4, 8.7.2.3, and multiple appendix paragraphs to accommodate hydrogen-fuelled and dual-fuel engines,
• Amend Table 27 to include dual-fuel hydrogen engines,
• Insert new paragraphs 8.1.13 and 8.1.14 for FTIR and QCL-IR interference checks,
• Insert new paragraphs 9.4.13, 9.4.14, and 9.4.15 specifying requirements for FTIR and QCL-IR analysers,
• Add new Appendix A.7 describing procedures for H₂O measurement using QCL-IR or FTIR analysers,
• Amend Annex 5 title and various paragraphs.

Proposal to enable the approval of dual-fuel hydrogen (H2) engines of Type 1A for
installation in agricultural and forestry tractors and in non-road mobile machinery and to correct errors in the Regulation.

Proposal for amendments to ECE/TRANS/WP.29/GRPE/2026/24

GRPE held its ninety-fourth session from 17 to 19 March 2026 in Geneva. GRPE adopted proposals for draft supplements and amendments to UN Regulations Nos. 68, 83, 154, 49, 24, 85, 115, 133, 143, 177, 96, and ¹⁷⁹, and to UN GTRs Nos. 21, 22, and 25, requesting secretariat submission to WP.29 and AC.1 or AC.3 for consideration and vote at their June or November 2026 sessions. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/27 and requested secretariat submission to WP.29 for consideration at its November 2026 session as draft new Revision 2 to M.R.3. GRPE agreed to postpone consideration of certain proposals to forthcoming sessions. The next GRPE session is scheduled for 14–16 October 2026.

Proposal to:

• Insert new Appendix A.7 to Annex 4 for the procedure for the measurement of water (H₂O),
• Insert new Annexes 11 and 12 with their appendices for dual-fuel engines with hydrogen as a main fuel,
• Insert new paragraphs 2.1.102 and 2.1.103 defining “Instrument manufacturer” and “Type of analyser”,
• Add new rows to the abbreviations table in paragraph 2.2.2,
• Amend paragraph 3.1.1 to include dual-fuel engines of Type 1A with hydrogen as a main fuel,
• Amend paragraphs 5.6.4, 6.1.4, 8.7.2.3, and multiple appendix paragraphs to accommodate hydrogen-fuelled and dual-fuel engines,
• Amend Table 27 to include dual-fuel hydrogen engines,
• Insert new paragraphs 8.1.13 and 8.1.14 for FTIR and QCL-IR interference checks,
• Insert new paragraphs 9.4.13, 9.4.14, and 9.4.15 specifying requirements for FTIR and QCL-IR analysers,
• Add new Appendix A.7 describing procedures for H₂O measurement using QCL-IR or FTIR analysers,
• Amend Annex 5 title and various paragraphs.

Proposal to enable the approval of dual-fuel hydrogen (H2) engines of Type 1A for
installation in agricultural and forestry tractors and in non-road mobile machinery and to correct errors in the Regulation.

Proposal for amendments to ECE/TRANS/WP.29/GRPE/2026/24

GRPE held its ninety-fourth session from 17 to 19 March 2026 in Geneva. GRPE adopted proposals for draft supplements and amendments to UN Regulations Nos. 68, 83, 154, 49, 24, 85, 115, 133, 143, 177, 96, and ¹⁷⁹, and to UN GTRs Nos. 21, 22, and 25, requesting secretariat submission to WP.29 and AC.1 or AC.3 for consideration and vote at their June or November 2026 sessions. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/27 and requested secretariat submission to WP.29 for consideration at its November 2026 session as draft new Revision 2 to M.R.3. GRPE agreed to postpone consideration of certain proposals to forthcoming sessions. The next GRPE session is scheduled for 14–16 October 2026.

Proposal to:

• Insert new Appendix A.7 to Annex 4 for the procedure for the measurement of water (H₂O),
• Insert new Annexes 11 and 12 with their appendices for dual-fuel engines with hydrogen as a main fuel,
• Insert new paragraphs 2.1.102 and 2.1.103 defining “Instrument manufacturer” and “Type of analyser”,
• Add new rows to the abbreviations table in paragraph 2.2.2,
• Amend paragraph 3.1.1 to include dual-fuel engines of Type 1A with hydrogen as a main fuel,
• Amend paragraphs 5.6.4, 6.1.4, 8.7.2.3, and multiple appendix paragraphs to accommodate hydrogen-fuelled and dual-fuel engines,
• Amend Table 27 to include dual-fuel hydrogen engines,
• Insert new paragraphs 8.1.13 and 8.1.14 for FTIR and QCL-IR interference checks,
• Insert new paragraphs 9.4.13, 9.4.14, and 9.4.15 specifying requirements for FTIR and QCL-IR analysers,
• Add new Appendix A.7 describing procedures for H₂O measurement using QCL-IR or FTIR analysers,
• Amend Annex 5 title and various paragraphs.