European Automobile Manufacturers' Association
25 Jan 2011 Monitoring Procedure in UNECE R51: Monitoring database and cost/benefit analyses (ACEA study) (ACEA) GRB-53/GAR-01 2011-01-25 ACEA
29 Jan 2021 Study on future sound-limit values (ACEA) GRBP-73-25 2021-01-29 ACEA
2 Feb 2022 UN R51: Study on future sound limit values for type approval for vehicle categories M & N (ACEA) GRBP-75-16 2022-02-02 Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions ACEA
2 Feb 2022 UN R51: Presentation of the study on futures sound limits values for type-approval for vehicles of category M & N (ACEA) GRBP-75-17 2022-02-02 ACEA
2 Feb 2022 UN R51: Tyre performance study report (ACEA and OICA) GRBP-75-18 2022-02-02 A study to assess the influence of tyre performances (Rolling Resistance, Wet Grip, Noise level, ...) on each other, in order to understand the improvement potential of noise emissions. ACEA OICA
2 Sep 2022 UN R51: Comparison of EMISIA and ATEEL study on sound limit values (ACEA and OICA) GRBP-76-14 2022-09-02 ACEA OICA
3 May 2023 Monitoring Phase of RD-ASEP: Workshop with Contracting Parties (ACEA) RDASEP-01-03 2023-05-03 ACEA