Entry into force: 04 series of amendments | Supplement 12
19 Jan 2026
UN R41 | 04 series of amendments | Supplement 12
Based on WP.29/2025/69 as adopted during the 196th WP.29 session (23-27
Jun 2025).
Proposal to strengthen provisions against test defeating and to facilitate Conformity of Production testing.
Entry into force as of 11 Jan 2026
Entry into force: 05 series of amendments | Supplement 4
19 Jan 2026
UN R41 | 05 series of amendments | Supplement 4
Based on WP.29/2025/70 as adopted during the 196th WP.29 session (23-27
Jun 2025).
Proposal to
Clarify the application of the Annex 7 ASEP testing conditions of motorcycles,
Strengthen provisions against test defeating,
Facilitate Conformity of Production testing, and
Correct the communication document.
Entry into force as of 11 Jan 2026
Entry into force: 06 series of amendments
19 Jan 2026
UN R41 | 06 series of amendments
Based on WP.29/2025/66 as adopted during the 196th WP.29 session (23-27
Jun 2025).
Proposal to
Update the RD-ASEP limit line following the revisions of the test procedures implemented by the 05 series of amendments,
Clarify the application of the Annex 7 ASEP testing conditions of motorcycles,
Strengthen provisions against test defeating,
Facilitate Conformity of Production testing, and
Correct the communication document.
Entry into force as of 11 Jan 2026
Entry into force: 05 series of amendments | Supplement 3
20 Jan 2025
UN R41 | 05 series of amendments | Supplement 3
Based on WP.29/2024/68 as adopted during the 193rd WP.29 session (24-28
Jun 2024).
Proposal to allow use of state-of-the-art test tracks per the latest standard ISO 10844:202
Entry into force as of 10 Jan 2025
Entry into force: 04 series of amendments | Supplement 11
20 Jan 2025
UN R41 | 04 series of amendments | Supplement 11
Based on WP.29/2024/69 as adopted during the 193rd WP.29 session (24-28
Jun 2024).
Proposal to permit the use of state-of-the-art test tracks per the latest standard ISO 10844:2021.
Entry into force as of 10 Jan 2025
Entry into force: 05 series of amendments | Supplement 2
16 Jan 2024
UN R41 | 05 series of amendments | Supplement 2
Based on WP.29/2023/72 as adopted during the 190th WP.29 session (19-22
Jun 2023).
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.