Text prepared by the experts of TF TPMSTI in order to align with the provisions of European Union Regulation 2019/2144 and to introduce the TPMS requirements for all vehicle categories, including trailers. The proposal addresses the communication interface protocol of TPMS between towing and towed vehicles of categories N2, N3 and O3, O4, respectively (described in Annex 5 on the basis of the ISO bus requirements) in alignment with UN R13 and ISO updates. The proposal further corrects and clarifies provisions across TPMS, TPRS and CTIS.
| Reference Number: | WP.29/2021/10/Rev.1 |
| Meeting Session(s): | 183rd WP.29 session (9-11 Mar 2021) |
| Document date: | 01 Feb 21 |
| Document status: | Depositary Notification This adopted proposal becomes binding on 30 Sep 2021. |
| Regarding: | UN R141 Tyre Pressure Monitoring Systems |
| Adoption Vote | |
| This proposal (WP.29/2021/10/Rev.1) was adopted by the World Forum. Thirty-nine Contracting Parties out of the 56 applying UN R141 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and two abstaining. | |
| View full document file for more information | |
Proposal to introduce an alternative procedure for type approval of trailers (vehicles of categories O3 and O4) regarding their Tyre Pressure Monitoring System (TPMS), Tyre Pressure Refilling System (TPRS) and Central Tyre Inflation System (CTIS) and to align UN R141 with the transitional provisions of European Union (EU) Regulation 2019/2144.
| Reference Number: | WP.29/2022/9 |
| Meeting Session(s): | 186th WP.29 session (7-11 Mar 2022) |
| Document date: | 15 Dec 21 |
| Document status: | Adopted by WP.29 |
| Regarding: | UN R141 Tyre Pressure Monitoring Systems |
| Adoption Vote | |
| This proposal (WP.29/2022/9) was adopted by the World Forum. Thirty-nine Contracting Parties out of the 56 applying UN R141 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and two abstaining. | |
| View full document file for more information | |
Proposal to introduce an alternative procedure for type approval of trailers (vehicles of categories O3 and O4) regarding their Tyre Pressure Monitoring System (TPMS), Tyre Pressure Refilling System (TPRS) and Central Tyre Inflation System (CTIS).
| Reference Number: | WP.29/2022/87 |
| Meeting Session(s): | 187th WP.29 session (20-24 Jun 2022) |
| Document date: | 05 Apr 22 |
| Document status: | Adopted by WP.29 |
| Regarding: | UN R141 Tyre Pressure Monitoring Systems |
| View full document file for more information | |
Proposal from the GRBP task force on Automated Vehicles Regulation Screening for amendments to enable the application of UN R141 to ADS vehicles.
| Reference Number: | GRBP/2025/21 |
| Meeting Session(s): | 82nd GRBP session (3-5 Sep) and 17th GRBP-TFAVRS session (20 Aug) |
| Document date: | 19 Jun 25 |
| Document status: | Formal GR review |
| Regarding: | UN R141 Tyre Pressure Monitoring Systems | Regulation Screening for ADS |
| View full document file for more information | |
| Documents establishing the amendments | |||||
|---|---|---|---|---|---|
| 01 series of amendments | WP.29/2021/10/Rev.1 | ||||
| Supplement 1 | WP.29/2022/9 | ||||
| Supplement 2 | WP.29/2022/87 | ||||
| Supplement 3 | GRBP/2025/21 | ||||