| Revision 2 (not published) |
| Revision 2 | Amendment 1 (2023) |
| Revision 1 (2014) |
| UN R131: Revision 1-Amendment 1 (2016) |
| Revision 1 | Amendment 2 (2023) |
| Revision 1 | Amendment 3 (2023) |
| UN R131 (2013) |
| Amendment 1 (2014) |
| Earlier texts may be available through the UN Official Document System. |