| Proposal for the 04 series of amendments to Regulation No. 41 | |
| Reference Number: WP.29/2011/62 | |
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Adopted proposal integrated into UN R41: Revision 2 on 14 August 2012. |
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| Meeting Sessions: 154th WP.29 session (21-24 Jun 2011) | |
| Document date: 07 Apr 11 | |
| Document status: Adopted text published | |
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| Adoption Vote | |
| This proposal (WP.29/2011/62), as amended by para. 53, was adopted by the World Forum. Sixteen Contracting Parties out of the 27 applying UN R41 were present for the vote by AC.1. Sixteen voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| Proposal for Supplement 1 to the 04 series of amendments to Regulation No. 41 |
| Reference Number: WP.29/2014/2 |
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Proposal approved by the GRB to update UN R41 with the latest amendment of ISO 5130:2012, to correct the typing error of the decibel unit dB(A) (corrected from db(A)) and delete the unnecessary unit, and to revise the current list in Annex 4 as an itemized list for greater clarity. |
| Meeting Sessions: 162nd WP.29 session (11-14 Mar 2014) |
| Document date: 17 Dec 13 |
| Document status: Adopted text published |
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Relevant to
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| View full document file for more information |
| Proposal for Supplement 2 to the 04 series of amendments to Regulation No. 41 |
| Reference Number: WP.29/2015/2 |
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Proposal as approved by GRB to clarify certain terms and symbols used in Annex 7 (ASEP) of the regulation. |
| Meeting Sessions: 165th WP.29 session (10-13 Mar 2015) |
| Document date: 22 Dec 14 |
| Document status: Adopted text published |
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Relevant to
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| View full document file for more information |
| Proposal for Supplement 3 to the 04 series of amendments to Regulation No. 41 |
| Reference Number: WP.29/2015/61 |
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Proposal to introduce a calculated engine speed (in addition to measured engine speed) for MT vehicles and for continuously variable transmission (CVT)/automatic transmission (AT) with locked gear mechanism into UN Regulation No. 41 for the tests in Annex 3 and Annex 7 (Additional sound emission provisions – ASEP) |
| Meeting Sessions: 166th WP.29 session (23-26 Jun 2015) |
| Document date: 10 Apr 15 |
| Document status: Adopted text published |
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Relevant to
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| View full document file for more information |
| Proposal for Supplement 4 to the 04 series of amendments to Regulation No. 41 | |
| Reference Number: WP.29/2016/3 | |
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In response to concerns that approval agencies may not grant manufacturers the additional 1dB for L(wot) on conformity of production tests as changes had been made to Annex 6 of R41-04, GRB issued an interpretation recorded in the report of its 56th session. The proposal formalizes the interpretation as an explicit provision of the regulation. |
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| Meeting Sessions: 168th WP.29 session (8-11 Mar 2016) | |
| Document date: 23 Dec 15 | |
| Document status: Adopted text published | |
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| Adoption Vote | |
| This proposal (WP.29/2016/3) was adopted by the World Forum. Thirty-five Contracting Parties out of the 44 applying UN R41 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| Proposal for Supplement 5 to the 04 series of amendments to Regulation No. 41 | |
| Reference Number: WP.29/2016/46 | |
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Proposal to clarify the test procedure by explicitly excluding first gear where possible from the ASEP control range and to clarify that conditioning of a silencing system is necessary only in cases where exhaust gases come into contact with silencer fibrous materials. |
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| Meeting Sessions: 169th WP.29 session (21-24 Jun 2016) | |
| Document date: 04 Apr 16 | |
| Document status: Adopted text published | |
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| Adoption Vote | |
| This proposal (WP.29/2016/46) was adopted by the World Forum. Thirty-six Contracting Parties out of the 44 applying UN R41 were present for the vote by AC.1. Thirty-six voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for Supplement 6 to the 04 series of amendments | |
| Reference Number: WP.29/2018/6 | |
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Proposal to delete a description of the L4 vehicle category (motorcycles with a side car) from Annex 3 to Regulation No. 41. These vehicles fall under the scope of UN R9, having been removed from the scope of UN R41 as of the 04 series of amendments. |
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| Meeting Sessions: 174th WP.29 session (12-16 Mar 2018) | |
| Document date: 27 Dec 17 | |
| Document status: Adopted text published | |
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Relevant to
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| Adoption Vote | |
| This proposal (WP.29/2018/6) was adopted by the World Forum. Thirty-five Contracting Parties out of the 45 applying UN R41 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for Supplement 7 to the 04 series of amendments | |
| Reference Number: WP.29/2019/3 | |
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Proposal to require additional sound emission provisions (ASEP) testing under UN R41. |
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| Meeting Sessions: 177th WP.29 session (11-15 Mar 2019) | |
| Document date: 20 Dec 18 | |
| Document status: Adopted by WP.29 | |
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| Adoption Vote | |
| This proposal (WP.29/2019/3) was adopted by the World Forum. Thirty-five Contracting Parties out of the 47 applying UN R41 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for Supplement 8 to the 04 series of amendments | |
| Reference Number: WP.29/2020/70 | |
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Proposal to introduce provisions for stationary noise measurements on a single-sided dual exhaust system, minimize proliferation of approval numbers from models with differences in vehicle exhaust and silencing systems, and correct an omission regarding the compensating resevoir fill time thereby aligning UN R41 with the other noise UN Regulations Nos. 9, 51 and 63. |
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| Meeting Sessions: 181st WP.29 session (24 Jun 2020) | |
| Document date: 31 Mar 20 | |
| Document status: Adopted text published | |
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| Adoption Vote | |
| This proposal (WP.29/2020/70) was adopted by the World Forum. Thirty-nine Contracting Parties out of the 48 applying UN R41 were present for the vote by AC.1. Thirty-nine voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for a new 05 series of amendments | |
| Reference Number: WP.29/2021/3 | |
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Proposal to clarify UN R41 and introduce provisions to improve testing to be more representative of real-world operation by expanding the scope of test and to align the Regulation with ISO 10844:2014, replacing provisions from ISO 10844:1998 (and proposing a clearer image for Figure 1). |
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| Meeting Sessions: 183rd WP.29 session (9-11 Mar 2021) | |
| Document date: 17 Dec 20 | |
| Document status: Adopted text published | |
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Relevant to
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| Adoption Vote | |
| This proposal (WP.29/2021/3) was adopted by the World Forum. Thirty-five Contracting Parties out of the 48 applying UN R41 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for Supplement 9 to the 04 series of amendments | |
| Reference Number: WP.29/2021/4 | |
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Proposal to align the 04 series of amendments with ISO 10844:2014, replacing provisions from ISO 10844:1998 (and proposing a clearer image for Figure 1). |
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| Meeting Sessions: 183rd WP.29 session (9-11 Mar 2021) | |
| Document date: 17 Dec 20 | |
| Document status: Adopted text published | |
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Relevant to
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| Adoption Vote | |
| This proposal (WP.29/2021/4) was adopted by the World Forum. Thirty-five Contracting Parties out of the 48 applying UN R41 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for Supplement 1 to the 05 series of amendments | |
| Reference Number: WP.29/2021/76 | |
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Proposal to correct some references, which need to be updated as a consequence of document WP.29/2020/70, adopted at the June 2020 WP.29 session, notably
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| Meeting Sessions: 184th WP.29 session (22-24 Jun 2021) | |
| Document date: 09 Apr 21 | |
| Document status: Adopted by WP.29 | |
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Relevant to
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| Adoption Vote | |
| This proposal (WP.29/2021/76) was adopted by the World Forum. Thirty-five Contracting Parties out of the 48 applying UN R41 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for Supplement 10 to the 04 series of amendments | |
| Reference Number: WP.29/2021/77 | |
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Proposal to correct some references, which need to be updated as a consequence of document WP.29/2020/70, adopted at the June 2020 WP.29 session, notably
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| Meeting Sessions: 184th WP.29 session (22-24 Jun 2021) | |
| Document date: 09 Apr 21 | |
| Document status: Adopted text published | |
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Relevant to
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| Adoption Vote | |
| This proposal (WP.29/2021/77) was adopted by the World Forum. Thirty-five Contracting Parties out of the 48 applying UN R41 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for Supplement 2 to the 05 series of amendments | |
| Reference Number: WP.29/2023/72 | |
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Proposal to complete the additional sound emission provisions’ table of the communication form in the 05 series of amendments to UN R41 to avoid oversight in data collection and entries. |
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| Meeting Sessions: 190th WP.29 session (19-22 Jun 2023) | |
| Document date: 26 Apr 23 | |
| Document status: Adopted by WP.29 | |
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Relevant to
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| Adoption Vote | |
| This proposal (WP.29/2023/72) was adopted by the World Forum. Thirty-two Contracting Parties out of the 50 applying UN R41 were present for the vote by AC.1. Thirty-two voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for Supplement 11 to the 04 series of amendments |
| Reference Number: WP.29/2024/69 |
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Proposal to permit the use of state-of-the-art test tracks per the latest standard ISO 10844:2021. |
| Meeting Sessions: 193rd WP.29 session (24-28 Jun 2024) |
| Document date: 08 Apr 24 |
| Document status: Adopted by WP.29 |
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Relevant to
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| View full document file for more information |
| UN R41: Proposal for Supplement 3 to the 05 series of amendments |
| Reference Number: WP.29/2024/68 |
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Proposal to allow use of state-of-the-art test tracks per the latest standard ISO 10844:202 |
| Meeting Sessions: 193rd WP.29 session (24-28 Jun 2024) |
| Document date: 08 Apr 24 |
| Document status: Adopted by WP.29 |
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Relevant to
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| View full document file for more information |
| UN R41: Proposal for Supplement 4 to the 05 series of amendments | |
| Reference Number: WP.29/2025/70 | |
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Proposal to
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| Meeting Sessions: 196th WP.29 session (23-27 Jun) | |
| Document date: 09 Apr 25 | |
| Document status: Adopted by WP.29 | |
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Relevant to
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| Adoption Vote | |
| This proposal (WP.29/2025/70) was adopted by the World Forum. Thirty-four Contracting Parties out of the 51 applying UN R41 were present for the vote by AC.1. Thirty-four voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for a 06 series of amendments | |
| Reference Number: WP.29/2025/66 | |
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Proposal to
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| Meeting Sessions: 196th WP.29 session (23-27 Jun) | |
| Document date: 09 Apr 25 | |
| Document status: Adopted by WP.29 | |
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Relevant to
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| Adoption Vote | |
| This proposal (WP.29/2025/66) was adopted by the World Forum. Thirty-four Contracting Parties out of the 51 applying UN R41 were present for the vote by AC.1. Thirty-four voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for Supplement 12 to the 04 series of amendments | |
| Reference Number: WP.29/2025/69 | |
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Proposal to strengthen provisions against test defeating and to facilitate Conformity of Production testing. |
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| Meeting Sessions: 196th WP.29 session (23-27 Jun) | |
| Document date: 09 Apr 25 | |
| Document status: Adopted by WP.29 | |
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Relevant to
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| Adoption Vote | |
| This proposal (WP.29/2025/69) was adopted by the World Forum. Thirty-four Contracting Parties out of the 51 applying UN R41 were present for the vote by AC.1. Thirty-four voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| UN R41: Proposal for a Supplement to the 04, 05 and 06 series of amendments |
| Reference Number: GRBP/2025/19 |
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Proposal to clarify the gear selection procedure pursuant to the amendment to allow deviation from the reference acceleration awot,ref requirement for Conformity of Production tests. |
| Submitted by: IMMA |
| Meeting Sessions: 82nd GRBP session (3-5 Sep) |
| Document date: 19 Jun 25 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |
| UN R41: Proposal for a Supplement to the 04, 05 and 06 series of amendments |
| Reference Number: GRBP/2025/19 |
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Proposal to clarify the gear selection procedure pursuant to the amendment to allow deviation from the reference acceleration awot,ref requirement for Conformity of Production tests. |
| Submitted by: IMMA |
| Meeting Sessions: 82nd GRBP session (3-5 Sep) |
| Document date: 19 Jun 25 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |
| UN R41: Proposal for a Supplement to the 04, 05 and 06 series of amendments |
| Reference Number: GRBP/2025/19 |
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Proposal to clarify the gear selection procedure pursuant to the amendment to allow deviation from the reference acceleration awot,ref requirement for Conformity of Production tests. |
| Submitted by: IMMA |
| Meeting Sessions: 82nd GRBP session (3-5 Sep) |
| Document date: 19 Jun 25 |
| Document status: Formal GR review |
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Relevant to
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| View full document file for more information |