Proposal to

1. exempt hybrid vehicles that do not provide valid test results (e.g., internal combustion engine active under test conditions)
2. clarify the text concerning permissible AVAS operating conditions
to differentiate indoor and outdoor facility requirements (e.g., weather station requirement) and
3. update flowcharts in Annex 3 in line with text.

Vehicle categories M₁, N₁, and L₃.

Proposal to align ASEP for high powered L₄ and L₅ vehicles, used for passenger transport, is proposed in line with UN Regulation No 41.04 due to comparable sound emissions levels of L₄ and L₅ vehicles with the ones of L₃ vehicles and the possibility of applying similar measurement methods for sound emissions for those vehicle categories. This is also supported by the Commission study on enhanced sound requirements for mopeds, quads and replacement silencers of L-category vehicles which resulted in amendments to UN Regulation Nos 9, 63 and 92 (ref. document WP.29/2017/2).

Proposal to align UN R117 related to approval numbers and markings in line with the provisions of Schedule 4 to the 1958 Agreement addressing the concern raised by the Informal Working Group on the
International Whole Vehicle Type Approval (IWVTA).

Presentation regarding the the national regulation in the Netherlands on delivery noise of trucks.

Presentation in support of establishing a 02 series of amendments to UN R117 with higher stringencies based on informal document GRB-66-03.

Copy of document GRB-68-25 presented to the Working Party on Noise.

Copy of informal group guidelines presented to the Working Party on Noise (GRB-68-26).