| GRB-57-16 | Proposal for amendments to Regulations Nos. 28, 51, 59 and 117 | |
| GRB-57-28 | Reducing Vehicle Noise Emissions: Update on the new EU Commission legislative proposal | |
| GRB/2013/4 | Proposal for Supplement 9 to the 02 series of amendments to Regulation No. 51 | |
| GRB-57-17 | Proposal for amendments to add Transitional Provisions to Regulation No. 51.03 | |
| GRB/2013/2 | Proposal for 03 series of amendments to Regulation No. 117 | |
| GRB/2013/3 | Proposal for Supplement 3 to the 02 series of amendments to Regulation No. 117 |