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12 Feb 2025
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UN R41: Proposal to amend document GRBP-81-02 (IMMA)
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GRBP-81-15
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2025-02-12 |
IMMA |
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18 Feb 2025
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UN R41: Proposal to supersede document GRBP/2025/7 (IMMA)
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GRBP-81-29
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2025-02-18 |
IMMA |
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18 Feb 2025
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UN R41: Proposal to supersede document GRBP/2025/6 (IMMA)
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GRBP-81-30
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2025-02-18 |
IMMA |
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27 Aug
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UN R41: Proposal for a Supplement to the 04 series of amendments (IMMA)
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GRBP-84-10
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2026-08-27 |
Proposal to amend Annex 7, paragraph 3.1, to add provisions allowing discard of test runs when additional operating conditions lead to riding conditions not expected to occur in real traffic such as front wheel lift up, apparent wheel spin, chain slap, or engine lugging, and amend paragraph 3.2.2 to specify that if unusual riding conditions occur during testing, the test shall be performed in the next higher gear and maximum vehicle speed shall be reached at line BB' instead, thereby ensuring consistency with the 05 and 06 series of UN Regulation No. 41. IMMA |
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16 Jul 2019
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UN R41: Proposal for a Supplement to the 04 series of amendments (IMMA)
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GRBP/2019/24
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2019-07-16 |
Proposal is to correct an omission regarding the compensating resevoir fill time thereby aligning UN R41 with the other noise UN Regulations Nos. 9, 51 and 63. IMMA |
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16 Jul 2019
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UN R41: Proposal for a Supplement to the 04 series of amendments (IMMA)
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GRBP/2019/25
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2019-07-16 |
Proposal to allow multiple exhaust and/or silencing system configurations to be explicitly listed under the same motorcycle type approval in order to reduce redundancy and number of separate approvals and documentation. IMMA |
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15 Nov 2019
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UN R41: Proposal for a Supplement to the 04 series of amendments (IMMA)
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GRBP/2019/25/Rev.1
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2019-11-15 |
Proposal to minimize proliferation of approval numbers from models with differences in vehicle exhaust and silencing systems. IMMA |
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27 Jun 2020
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UN R41: Proposal for amendments to the 04 series of amendments (IMMA)
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GRBP/2020/18
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2020-06-27 |
Per the transitional provisions of Supplement 3 to the 04 series of amendments, from 20 January 2021, the specifications for the test site reproduced in Annex 4 will be replaced by the provisions of ISO 10844:2014. Therefore, this proposal aims 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). IMMA |
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22 Nov 2022
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UN R41: Proposal for Supplement 2 to the 05 series of amendments (IMMA)
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GRBP/2023/6
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2022-11-22 |
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. IMMA |
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13 Jun 2023
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UN R41: Proposal for Supplement 11 to the 04 series of amendments (IMMA)
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GRBP/2023/14
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2023-06-13 |
Proposal to allow using the state-of-the-art test track from the latest standard ISO 10844:2021. IMMA |
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13 Jun 2023
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UN R41: Proposal for Supplement 3 to the 05 series of amendments (IMMA)
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GRBP/2023/15
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2023-06-13 |
Proposal to allow using the state-of-the-art test track from the latest standard ISO 10844:202 IMMA |
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2 Dec 2024
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UN R41: Proposal for a Supplement to the 04 series of amendments (IMMA)
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GRBP/2025/6
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2024-12-02 |
Proposal to strengthen provisions against test defeating and to facilitate Conformity of Production testing. IMMA |
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2 Dec 2024
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UN R41: Proposal for a Supplement to the 05 series of amendments (IMMA)
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GRBP/2025/7
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2024-12-02 |
Proposal to strengthen provisions against test defeating, to facilitate Conformity of Production testing, and to correct the communication document. IMMA |
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19 Jun 2025
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UN R41: Proposal for a Supplement to the 04, 05 and 06 series of amendments (IMMA)
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GRBP/2025/19
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2025-06-19 |
Proposal to clarify the gear selection procedure pursuant to the amendment to allow deviation from the reference acceleration a<sub>wot,ref</sub> requirement for Conformity of Production tests. IMMA |
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10 Nov 2023
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UN R41: Concept for motorcycle ASEP Step 2 (IMMA)
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RDASEPL-01-02
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2023-11-10 |
IMMA |
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5 Apr 2024
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UN R41: Working draft 06 series on RD-ASEP (IMMA)
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RDASEPL-02-02
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2024-04-05 |
IMMA |
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5 Apr 2024
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UN R41: Proposal for revised ASEP limit line in sound level/speed format (IMMA)
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RDASEPL-02-03
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2024-04-05 |
IMMA |
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5 Apr 2024
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UN R41: 05 series interpretation document-Annex 7 RD-ASEP (IMMA)
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RDASEPL-02-05
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2024-04-05 |
IMMA |
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14 Aug 2024
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UN R41: Working draft proposal for a Supplement to the 05 series of amendments (IMMA)
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RDASEPL-04-02/Rev.1
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2024-08-14 |
Working draft interpretation provisions to clarify the application of the Annex 7 ASEP testing conditions of motorcycles. IMMA |
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14 Aug 2024
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UN R41: Comments on a ASEP limit line (IMMA)
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RDASEPL-04-03/Rev.1
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2024-08-14 |
IMMA |
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5 Jul 2024
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UN R41: Comments on timing for introduction of new RD-ASEP provisions (IMMA)
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RDASEPL-04-04
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2024-07-05 |
IMMA |
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21 Nov 2024
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UN R41: Comments on the draft proposal for a 06 series of amendments (IMMA)
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RDASEPL-05-04/Rev.2
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2024-11-21 |
IMMA |
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24 Oct 2024
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UN R41: ASEP Step 2-Presentation of test data (including speed) (IMMA)
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RDASEPL-05-05
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2024-10-24 |
IMMA |
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9 Dec 2024
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UN R41: Proposal for addition to draft 06 series (IMMA)
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RDASEPL-06-08
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2024-12-09 |
IMMA |
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8 Feb 2022
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Reassessment of the cost benefit analysis study on Euro 5 sound level limits of L-category vehicles and Experimental Noise Source Ranking (ACEM and IMMA)
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TFVS-07-09/Rev.1
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2022-02-08 |
ACEM IMMA |
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2 Feb 2022
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Experimental Noise Source Ranking Study (TU Graz, ACEM, and IMMA)
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TFVS-07-10
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2022-02-02 |
TU Graz ACEM IMMA |
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8 Feb 2022
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Expert review and reassessment of the cost benefit analysis study on Euro 5 sound level limits of L-category vehicles (IMMA)
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TFVS-07-12
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2022-02-08 |
IMMA |
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22 Apr 2022
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Cost benefit analysis for Euro 5 L-category noise emission (IMMA)
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TFVS-08-07
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2022-04-22 |
IMMA |
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25 May 2011
|
Amendments to the proposal for the 04 series of amendments to Regulation No. 41 (IMMA)
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WP.29-154-04
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2011-05-25 |
IMMA |