| Revision 2 (2023) |
| Revision 2 | Amendment 1 (2022) |
| Revision 2 | Amendment 2 (2022) |
| Revision 2 | Amendment 3 (2023) |
| Revision 1 (2017) |
| Revision 1 | Amendment 1 (2019) |
| Revision 1 | Amendment 2 (2019) |
| Revision 1 | Amendment 3 (2021) |
| UN R137 (2016) |
| Amendment 1 (2017) |
| Amendment 2 (2019) |
| Earlier texts may be available through the UN Official Document System. |