World Forum for the Harmonization of Vehicle Regulations | Session 196 | 23-27 Jun
Geneva
Agenda Item 4.7.9.
UN R157: Proposal for a Supplement 4 to the 01 series of amendments

ECE/TRANS/WP.29/GRVA/21, para. 26, based on ECE/TRANS/WP.29/GRVA/2025/4 and ECE/TRANS/WP.29/GRVA/2025/2 as amended by informal document GRVA-21-07.