| GRSP-63-08/Rev.1 | UN R129: Proposal for various supplements to different series of amendments | |
| GRSP-63-09 | UN R129: Proposal for Supplement 8 to the 00 series of amendments, Supplement 5 to the 01 series of amendments, Supplement 4 to the 02 series of amendments and Supplement 1 to the 03 series of amendments | |
| GRSP-63-10/Rev.1 | UN R129: Proposal for Supplement 5 to the 01 series of amendments and Supplement 4 to the 02 series of amendments | |
| GRSP-63-11/Rev.1 | UN R129: Proposal of supplements to the series of amendments | |
| GRSP-63-27 | UN R129: Proposal for Supplement 1 to the 03 series of amendments | |
| GRSP-63-28 | UN R129: CLEPA responses to documents GRSP/2018/17-18 regarding approval categories and stature limits for booster seats | |
| GRSP-63-30 | UN R129: Proposal for Supplement 1 to the 03 series of amendments | |
| GRSP/2018/8 | UN R129: Proposal for Supplement 1 to the 03 series of amendments | |
| GRSP/2018/13 | UN R129: Proposal for Supplement 8 to the 00 series of amendments | |
| GRSP/2018/14 | UN R129: Proposal for Supplement 5 to the 01 series of amendments | |
| GRSP/2018/15 | UN R129: Proposal for Supplement 4 to the 02 series of amendments | |
| GRSP/2018/15 | UN R129: Proposal for Supplement 4 to the 02 series of amendments | |
| GRSP/2018/16 | UN R129: Proposal for Supplement 1 to the 03 series of amendments | |
| GRSP/2018/17 | UN R129: Proposal for Supplement 4 to the 02 series of amendments | |
| GRSP/2018/18 | UN R129: Proposal for Supplement 1 to the 03 series of amendments | |
| GRSP/2018/19 | UN R129: Proposal for Supplement 8 to the 00 series of amendments | |
| GRSP/2018/20 | UN R129: Proposal for Supplement 5 to the 01 series of amendments | |
| GRSP/2018/21 | UN R129: Proposal for Supplement 4 to the 02 series of amendments | |
| GRSP/2018/22 | UN R129: Proposal for Supplement 1 to the 03 series of amendments |