GRPE will receive a status report from the TFTA.
| GRPE-90-20/Rev.1 | TFTA (Tyre Abrasion): Status Report - Tyre Abrasion Study for ACEA | |
| GRPE-90-29/Rev.2 | TF Tyre Abrasion: Status report | |
| GRPE-90-40 | UN R117: Proposal for Supplement 02 to the 04 series of amendments |