13 January RD-ASEP: UN R51 and R138 questions to be discussed R51/R138-03-09	R51/R138-03-09	2025-01-13
13 January R51/R138: Agenda for the 4th (January 2025) session R51/R138-04-01	R51/R138-04-01	2025-01-13
13 January RD-ASEP: Comments on corrections to the 03 series of amendments (OICA) R51/R138-04-02	R51/R138-04-02	2025-01-13
15 January Minutes of the 3rd (December 2024) R51/R138 informal subgroup session R51/R138-03-08/Rev.1	R51/R138-03-08/Rev.1	2025-01-15
15 January UN R51: Proposal for an update of Supplement 11 to the 03 series of amendments (OICA) R51/R138-04-03	R51/R138-04-03	2025-01-15
23 January R51/R138: Agenda for the 5th (January 2025) session R51/R138-05-01	R51/R138-05-01	2025-01-23
29 January RD-ASEP, UN R51 and R138: Synthesis of discussions R51/R138-05-02	R51/R138-05-02	2025-01-29
29 January Minutes of the 4th R51/R138 subgroup session R51/R138-05-03	R51/R138-05-03	2025-01-29
30 January RD-ASEP UN R51/R138 subgroup status report to GRBP R51/R138-05-04	R51/R138-05-04	2025-01-30
14 February Minutes of the 5th (January 2025) R51/R138 informal subgroup session R51/R138-05-05	R51/R138-05-05	2025-02-14
19 February UN R51 and R138 RD-ASEP: Questions to be discussed R51/R138-05-06	R51/R138-05-06	2025-02-19
13 March R51/R138: Agenda for the 6th (March 2025) session R51/R138-06-01	R51/R138-06-01	2025-03-13
18 March UN R51/R138 RD-ASEP feedback from the 81st GRBP session and remaining questions R51/R138-06-02	R51/R138-06-02	2025-03-18
21 March R51/R138: Agenda for the 7th (April 2025) session R51/R138-07-01	R51/R138-07-01	2025-03-21
21 March UN R138: Questions on RD-ASEP tests R51/R138-07-02	R51/R138-07-02	2025-03-21
4 April UN R51: Supplement 11-Timeline and Explanation of Changes in GRBP/2024/22 (OICA) R51/R138-07-03	R51/R138-07-03	2025-04-04
10 April Minutes of the 6th (March 2025) R51/R138 informal subgroup session R51/R138-06-03	R51/R138-06-03	2025-04-10
10 April UN R51: Proposal for corrections to the 03 series (EC) R51/R138-07-04	R51/R138-07-04	2025-04-10
10 April UN R51: Comments on proposed corrections (Supplement 11 to 03 series) R51/R138-07-05	R51/R138-07-05	2025-04-10
30 April R51/R138: Agenda for the 8th (April 2025) session R51/R138-08-01	R51/R138-08-01	2025-04-30
30 April UN R51: Proposal for corrections to the 03 series of amendments R51/R138-08-02	R51/R138-08-02	2025-04-30
30 April UN R51: Comments on the draft proposal for a Supplement 11 to the 03 series R51/R138-08-03	R51/R138-08-03	2025-04-30
26 May R51/R138: Agenda for the 9th (June 2025) session R51/R138-09-01	R51/R138-09-01	2025-05-26
26 May Minutes of the 8th (April 2025) R51/R138 informal subgroup session R51/R138-08-04	R51/R138-08-04	2025-05-26
4 June UN R138: Structuring proposal for 03 series (OICA) R51/R138-09-02	R51/R138-09-02	2025-06-04
5 June Key points on exterior sound enhancement testing requirements R51/R138-10-02	R51/R138-10-02	2025-06-05
5 June R51/R138: Agenda for the 10th (June 2025) session R51/R138-10-01	R51/R138-10-01	2025-06-05
5 June UN R51: Proposal for corrections to the 03 series (EC) R51/R138-10-04	R51/R138-10-04	2025-06-05
5 June UN R51: Proposal for corrections to the 03 series (EC) R51/R138-09-03	R51/R138-09-03	2025-06-05
5 June UN R51: Proposal for corrections to the 03 series (EC) R51/R138-09-04	R51/R138-09-04	2025-06-05
20 June Minutes of the 10th (June 2025) R51/R138 informal subgroup session R51/R138-10-03	R51/R138-10-03	2025-06-20
20 June Vehicle external sound: Questions to be discussed R51/R138-11-02	R51/R138-11-02	2025-06-20
20 June Proposal for Exterior Sound Enhancement System (ESES) requirements (OICA) R51/R138-11-03	R51/R138-11-03	2025-06-20
20 June Key points on Exterior Sound Enhancement Systems/Exterior Sound Generator requirements R51/R138-11-01	R51/R138-11-01	2025-06-20
24 June Minutes of the 11th (June 2025) R51/R138 informal subgroup session R51/R138-11-04	R51/R138-11-04	2025-06-24
1 July R51/R138: Agenda for the 12th (July 2025) session R51/R138-12-01	R51/R138-12-01	2025-07-01
1 July Background on proposal for setting sound limits (OICA) R51/R138-12-02	R51/R138-12-02	2025-07-01
8 July Minutes of drafting group on UN R51 and EV sound provisions (UN R51/UN R138) R51/R138-12-03	R51/R138-12-03	2025-07-08
10 July UN R51: Draft proposal for corrections to the 03 series of amendments R51/R138-12-04	R51/R138-12-04	2025-07-10