WP.29/2021/81 | Request for authorization to develop a UN GTR on durability of after treatment devices for two- and three-wheeled motor vehicles |
ECE/TRANS/WP.29/2021/81 per ECE/TRANS/WP.29/GRPE/82, para. 47., based on GRPE-82-26-Rev.1 as amended by Annex VII.