International Organization of Motor Vehicle Manufacturers
18 Feb 2025 Exterior Acoustic Signaling: Work in progress (ACEA and OICA) GRBP-81-31 2025-02-18 ACEA OICA
4 Jun 2025 UN R138: Structuring proposal for 03 series (OICA) R51/R138-09-02 2025-06-04 OICA
20 Jun 2025 Proposal for Exterior Sound Enhancement System (ESES) requirements (OICA) R51/R138-11-03 2025-06-20 OICA
1 Jul 2025 Background on proposal for setting sound limits (OICA) R51/R138-12-02 2025-07-01 OICA