UN Regulation No. 9: Three-Wheeled Cycle Noise

Uniform Provisions Concerning the Approval of Category L2, L4 and L5 Vehicles with Regard to Noise

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Date Reference Description Status
20 Dec 2018 WP.29/2019/6
UN R9: Proposal for the 08 series of amendments
World Forum Working Three-Wheeled Cycle Noise Three-Wheeled Cycle Noise Uniform Provisions Concerning the Approval of Category L2, L4 and L5 Vehicles with Regard to Noise Proposal to introduce ASEP requirements for L<sub>4</sub> and L<sub>5</sub> category vehicles with PMR > 50 W/kg. The proposal aligns ASEP for high powered L<sub>4</sub> and L<sub>5</sub> vehicles, used for passenger transport, with UN Regulation No 41.04 due to comparable sound emissions levels of L<sub>4</sub> and L<sub>5</sub> vehicles with the ones of L<sub>3</sub> vehicles and the possibility of applying similar measurement methods for sound emissions for those vehicle categories. This proposal is 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).
23 Jan 2019 GRB-69-14
UN R9: Proposal for amendments to the draft 08 series of amendments
Working Party Informal Three-Wheeled Cycle Noise Three-Wheeled Cycle Noise Uniform Provisions Concerning the Approval of Category L2, L4 and L5 Vehicles with Regard to Noise Proposal to correct an inconsistency in document GRB-68-22 (adopted along with GRB/2018/7 and submitted for consideration at the March 2019 WP.29 session as WP.29/2019/6) regarding the ASEP exemption conditions for vehicles with variable gear ratios or automatic transmission with non-lockable gear ratios.
23 Jan 2019 GRB-69-16
UN R9: ASEP for L5 vehicles with CVT/AT: background information to GRB-69-14
Working Party Informal Three-Wheeled Cycle Noise Three-Wheeled Cycle Noise Uniform Provisions Concerning the Approval of Category L2, L4 and L5 Vehicles with Regard to Noise
20 Jun 2019 GRBP/2019/22
UN R9: Proposal for a Supplement to the 08 series of amendments
Working Party Working Three-Wheeled Cycle Noise Three-Wheeled Cycle Noise Uniform Provisions Concerning the Approval of Category L2, L4 and L5 Vehicles with Regard to Noise Proposal to correct inconsistencies on the exemption conditions for the additional sound emission provisions (ASEP) for vehicles with variable gear ratios or automatic transmission with non-lockable gear ratios.
20 Jun 2019 GRBP/2019/23
UN R9: Proposal for a Supplement to the 08 series of amendments
Working Party Working Three-Wheeled Cycle Noise Three-Wheeled Cycle Noise Uniform Provisions Concerning the Approval of Category L2, L4 and L5 Vehicles with Regard to Noise Proposal to introduce mandatory additional sound emission provisions (ASEP) testing.
19 Dec 2019 WP.29/2020/2
UN R9: Proposal for Supplement 1 to the 08 series of amendment
World Forum Working Three-Wheeled Cycle Noise Three-Wheeled Cycle Noise Uniform Provisions Concerning the Approval of Category L2, L4 and L5 Vehicles with Regard to Noise Proposal to introduce mandatory additional sound emission provisions (ASEP) tests and to correct inconsistencies in the ASEP exemption conditions for vehicles with variable gear ratios or automatic transmission with non-lockable gear ratios.