The UN World Forum for Harmonization of Vehicle Regulations (WP.29) enables governments to cooperate internationally in developing vehicle regulations concerning safety, environmental performance, and energy efficiency.
GlobalAutoRegs is a technical resource for members of the regulatory affairs community interested in this international collaboration.
| EV/HFCV retrofitting: Draft new UN Regulation |
| Reference Number: EV/HFCV-10-09 |
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Proposal to establish uniform provisions for approval of electric powertrain retrofit system installation on vehicles of categories M1–M3 and N1–N3:
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| Meeting Sessions: 10th EV/HFCV session (2 Jul) |
| Document date: 22 Jul 26 |
| Relevant to: WP.29 Regulatory Project | Electric and Hydrogen Fuel-Cell Vehicle Retrofit Systems |
| Click here to view the full document file |
| UN R145: Draft proposal for a Supplement to the 01 series of amendments |
| Reference Number: STCBC-TF173-09-04 |
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Proposal to amend para. 2.9. to define ISOFIX position as a position that satisfies the requirements of this Regulation to allow the installation of ISOFIX child restraint systems as defined in UN Regulation No. 44 and UN Regulation No. 129, amend para. 2.24. to define i-Size seating position as a seating position that satisfies the requirements defined in this Regulation to allow the installation of i-Size child restraint systems as defined in UN Regulation No. 129, amend para. 5.2.2.7. to exclude i-Size seating positions and low ISOFIX anchorages installed in vehicles of category M2 or M3 from the requirements of para. 5.2.2.6., amend para. 5.2.4.1. to provide that marking requirements do not apply to vehicles of category M2 and M3, and amend para. 6.2.5.1. to provide that for vehicles in categories M2 and N2 the force shall be 10 times the mass of relevant parts of the seat and for categories M3 and N3 it shall be 6.6 times the mass of relevant parts of the seat. |
| Meeting Sessions: 9th STCBC-TF173 session (17 Jun) |
| Document date: 17 Jun 26 |
| Relevant to: UN Regulation No. 145 | ISOFIX anchorages systems, ISOFIX top tether anchorages and i-Size seating positions |
| Click here to view the full document file |
| UN R173: Draft proposal for a 02 series of amendments |
| Reference Number: STCBC-TF173-09-03 |
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Proposal to amend para. 2.27. to define ISOFIX position as a position satisfying UN R145 requirements to allow installation of ISOFIX child restraint systems as defined in UN R44 and UN R129, amend para. 2.36. to define i-Size seating position as satisfying UN R145 requirements for i-Size child restraint systems, insert new para. 2.48. defining minimum effective seat belt length, insert new para. 5.1.11. establishing minimum belt length measurement for vehicles of categories M2 and M3, amend para. 5.2.1. to clarify seating position requirements by vehicle category and child restraint system type, amend para. 5.2.2. to remove reference to manufacturer recommendations, amend para. 5.3.5. to limit ISOFIX position requirements to M1 vehicles, insert new para. 11.3. establishing transitional provisions with entry into force date and 1 September 2030 deadline, and amend Annex 6 Appendix 1 and delete Annex 6 Appendix 2 para. 1.2. |
| Meeting Sessions: 9th STCBC-TF173 session (17 Jun) |
| Document date: 17 Jun 26 |
| Relevant to: UN Regulation No. 173 | Installation of safety belts, restraint systems, child restraint systems, ISOFIX child restraint systems and i-Size child restraint systems |
| Click here to view the full document file |
| UN R107: Draft proposal for a 12 series of amendments |
| Reference Number: STCBC-TF173-09-02 |
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Proposal to insert new definitions for Child Restraint System, ISOFIX position, and i-Size seating position, insert new paragraph 7.7.8.7 establishing requirements for Child Restraint Systems including pictogram specifications for ISOFIX-seating positions, i-Size-seating positions, and rearward-facing passenger seats, insert new paragraphs 10.42 to 10.42.7 establishing transitional provisions effective from the official date of entry into force and 1 September 2030, and add new figures 33, 34, and 35 to Annex 4 specifying pictogram requirements. |
| Meeting Sessions: 9th STCBC-TF173 session (17 Jun) |
| Document date: 17 Jun 26 |
| Relevant to: UN Regulation No. 107 | Construction of Coaches and Buses |
| Click here to view the full document file |
| STCBC UN R173 Task Force: Agenda for the 9th (June 2026) session |
| Reference Number: STCBC-TF173-09-01 |
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The 9th STCBC Task Force session convenes on 17 June 2026 from 14:30h to 16:30h CET via TEAMS meeting. The agenda includes welcome and meeting arrangements, adoption of the agenda, feedback from GRSP, and amendments to UN R107, UN R173, and UN R145. The next meeting will be scheduled. |
| Meeting Sessions: 9th STCBC-TF173 session (17 Jun) |
| Document date: 17 Jun 26 |
| Relevant to: UN Regulation No. 107 | Construction of Coaches and Buses, UN Regulation No. 170 | Child Restraint Systems for Buses and Coaches, UN Regulation No. 145 | ISOFIX anchorages systems, ISOFIX top tether anchorages and i-Size seating positions, and UN Regulation No. 173 | Installation of safety belts, restraint systems, child restraint systems, ISOFIX child restraint systems and i-Size child restraint systems |
| Click here to view the full document file |
| UN R145: Draft proposal for a Supplement to the 01 series of amendments |
| Reference Number: STCBC-TF173-08-04 |
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Proposal to amend para. 2.9. to redefine ISOFIX position as a position that satisfies the requirements of this Regulation to allow the installation of ISOFIX child restraint systems as defined in UN Regulation No. 44 and UN Regulation No. 129, amend para. 2.24. to redefine i-Size seating position as a seating position that satisfies the requirements defined in this Regulation to allow the installation of i-Size child restraint systems as defined in UN Regulation No. 129, amend para. 5.2.2.7. to state that the requirements of para. 5.2.2.6. do not apply to the i-Size seating position and to low ISOFIX anchorages installed in vehicles of category M2 or M3, and amend para. 5.2.4.1. to provide that marking requirements do not apply to vehicles of category M2 and M3. |
| Meeting Sessions: 8th STCBC-TF173 session (18 May) |
| Document date: 18 May 26 |
| Relevant to: UN Regulation No. 145 | ISOFIX anchorages systems, ISOFIX top tether anchorages and i-Size seating positions |
| Click here to view the full document file |
| UN R173: Draft proposal for a 02 series of amendments |
| Reference Number: STCBC-TF173-08-03 |
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Proposal to amend para. 2.27. to define ISOFIX position as a position satisfying requirements of UN R145 to allow installation of ISOFIX child restraint systems as defined in UN R44 and UN R129, amend para. 2.36. to define i-Size seating position as a seating position satisfying requirements of UN R145 to allow installation of i-Size child restraint systems as defined in UN R129, insert new para. 2.48. defining minimum effective seat belt length, insert new para. 5.1.11. specifying minimum seat belt lengths for M₂ and M₃ vehicles, amend para. 5.2.1. to establish requirements for seating positions of M₁, M₂, M₃ and N₁ vehicles suitable for various child restraint systems and require M₁ vehicles to provide child restraint system installation information, amend para. 5.2.2. to remove reference to manufacturer recommendation, insert new para. 11.3. establishing transitional provisions applicable from the official entry into force date and from 1 September 2030, and insert new Annex 8 specifying measurement methodology for minimum effective seat belt length. |
| Meeting Sessions: 8th STCBC-TF173 session (18 May) |
| Document date: 18 May 26 |
| Relevant to: UN Regulation No. 173 | Installation of safety belts, restraint systems, child restraint systems, ISOFIX child restraint systems and i-Size child restraint systems |
| Click here to view the full document file |
| UN R107: Draft proposal for a 12 series of amendments |
| Reference Number: STCBC-TF173-08-02 |
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Proposal to insert new definitions for Child Restraint System, ISOFIX position, and i-Size seating position, insert new para. 7.7.8.7 requiring pictograms for ISOFIX-seating positions, i-Size-seating positions, and rearward-facing passenger seats, insert new paras. 10.42 to 10.42.7 establishing transitional provisions with entry into force from the official date, mandatory application from 1 September 2030, and acceptance of prior series until 1 September 2032, and add new figures 33, 34, and 35 to Annex 4 specifying pictogram requirements. |
| Meeting Sessions: 8th STCBC-TF173 session (18 May) |
| Document date: 18 May 26 |
| Relevant to: UN Regulation No. 107 | Construction of Coaches and Buses |
| Click here to view the full document file |