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UN R138: Proposal for Supplement 3 to the 01 series of amendments
Document WP.29/2023/3
13 December 2022

Proposal to bring the latest ISO 10844 standard test surface into the Regulation.

Status: Adopted by WP.29
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Previous Documents, Discussions, and Outcomes
4.6.2. | Proposal for Supplement 3 to the 01 series of amendments to UN Regulation No. 138 (Quiet road transport vehicles)
3. | UN Regulation No. 138 (Quiet road-transport vehicles)

11. The expert from ISO proposed to bring the latest ISO 10844:2021 standard test surface into UN Regulation No. 138 (ECE/TRANS/WP.29/GRBP/2022/15). GRBP adopted the proposal and requested the secretariat to submit it for consideration and vote at the March 2023 sessions of WP.29 and AC.1 as draft Supplement 3 to the 01 series of amendments to UN Regulation No. 138.

6. | UN Regulation No. 138 (Quiet road transport vehicles)

12. The expert from France introduced a proposal that aimed to clarify the interpretation of the requirements concerning the variation of the sound emitted proportionally with the vehicle speed (ECE/TRANS/WP.29/GRBP/2021/14). She also proposed to clarify the testing requirements (GRBP-74-05). GRBP supported in principle these proposals, subject to replacement in GRBP-74-05, paragraph 6.2.3.2. of “≥” with “greater or equal to”, but in view of other ongoing activities on UN Regulation No. 138 decided to await further amendment proposals with the aim to combine them into a single package before submitting to WP.29 and AC.1.

13. The expert from Switzerland proposed to prohibit operation of the acoustic vehicle alerting system (AVAS) outside the specification speed range from 0 km/h up to and inclusive 20 km/h (GRBP-74-02). The experts from Germany, ISO and OICA (GRBP-74-28) commented on this proposal. GRBP agreed to revert to this issue at the next session.

Related and Previous Documents
GRBP/2022/15
GRBP-74-02
GRBP-74-05
GRBP-74-28
Relates to UN R138 |