160. The Chair of AC.3 recommended that AC.3 endorses ECE/TRANS/WP.29/2021/81, granting authorization to the IWG on EPPR to develop a new UN GTR on durability of after treatment devices for two- and three- wheeled motor vehicles. AC.3 adopted ECE/TRANS/WP.29/2021/81 and requested the secretariat to issue it as an AC.3 document for consideration at its next session in November 2021.