28 Jan 2013 UN R51: China is finding common solutions for M1 and N1 sub-categories (CATARC) GRB-57-05 2013-01-28
28 Jan 2013 UN R51: Chinese suggestions on subcategories of commercial vehicles (CATARC) GRB-57-06 2013-01-28
28 Jan 2013 UN R51: Sub-categories table suggestion from China (CATARC) GRB-57-07 2013-01-28
31 Jan 2013 Proposal of amendments to document GRB/2013/4 (China) GRB-57-13 2013-01-31
5 Feb 2013 Proposal for amendments to Regulations Nos. 28, 51, 59 and 117 (OICA) GRB-57-16 2013-02-05
5 Feb 2013 Proposal for amendments to add Transitional Provisions to Regulation No. 51.03 (OICA) GRB-57-17 2013-02-05
5 Feb 2013 Proposal for a list of Acronyms and Abbreviations to Regulation No. 51 (OICA) GRB-57-18 2013-02-05
5 Feb 2013 OICA position on Vehicle Classification, Limits and Dates in UN Regulation No. 51.03 (OICA) GRB-57-19 2013-02-05
5 Feb 2013 Proposal for amendments to UN Regulation No. 51.02 (OICA) GRB-57-20 2013-02-05
6 Feb 2013 Japanese proposal on R51 limit values: Rationale for N2 and M3 thresholds (JASIC) GRB-57-22 2013-02-06
6 Feb 2013 Vehicle Noise: Analysis of Swiss database and EC, Germany, and Japan noise proposals (FOEN) GRB-57-23 2013-02-06
7 Feb 2013 Reducing Vehicle Noise Emissions: Update on the new EU Commission legislative proposal (EC) GRB-57-28 2013-02-07
24 Jul 2013 Proposal for Supplement 10 to the 02 series of amendments to Regulation No. 51 (OICA) GRB-58-03 2013-07-24
24 Jul 2013 Proposal for the 03 series of amendments to Regulation No. 51 GRB-58-04 2013-07-24
26 Aug 2013 Proposal for draft 03 series of amendments to Regulation No. 51 (Japan) GRB-58-06 2013-08-26
3 Sep 2013 Revised proposal for draft 03 series of amendments to Regulation No. 51 (Japan) GRB-58-06/Rev.1 2013-09-03
30 Aug 2013 ASEP acceleration test proposals for low and high-powered vehicles (CATARC) GRB-58-07 2013-08-30
30 Aug 2013 Comments on Japanese noise-limit value suggestion of commercial vehicles (China) GRB-58-08 2013-08-30
30 Aug 2013 Noise limit values in draft Chinese regulation GB 1495 and UN R51 values (China) GRB-58-09 2013-08-30
30 Aug 2013 Noise-limit values and Chinese vehicle categories (CATARC) GRB-58-10 2013-08-30
2 Sep 2013 Categorization of Light N1 Vehicles (JASIC) GRB-58-14 2013-09-02
3 Sep 2013 Japan position on document GRB-58-04 (Japan) GRB-58-15 2013-09-03
3 Sep 2013 Proposal for the 03 series of amendments to Regulation No. 51 GRB-58-17 2013-09-03
5 Sep 2013 Proposal for the 03 series of amendments to Regulation No. 51: Revised GRB-58-17/Rev.1 2013-09-05
13 Nov 2013 Proposal for Supplement 10 to the 02 series of amendments to Regulation No. 51 (OICA) GRB/2014/2 2013-11-13
6 Mar 2013 Canadian unilateral application of certain UN Regulations (Canada) WP.29-159-03 2013-03-06