1. The Working Party on General Safety Provisions (GRSG) met for its 121st session from 12 to 16 April 2021, online, hosted from Geneva. The meeting was chaired by Mr. A. Erario (Italy). Experts from the following countries participated in the work, following Rule 1 of the Rules of Procedure of the World Forum for Harmonization of Vehicle Regulations (WP.29) (ECE/TRANS/WP.29/690/Rev.1): Australia, Belgium, Canada, China, Czech Republic, Finland, France, Germany, Hungary, India, Italy, Japan, Netherlands, Norway, Republic of Korea, Russian Federation, South Africa, Spain, Sweden, Switzerland, Turkey, United Kingdom of Great Britain and Northern Ireland and United States of America. Experts from the European Commission participated. Experts from non-governmental organizations participated: American Automotive Policy Council (AAPC), International Body and Trailer Building Industry (CLCCR), European Association of Automotive Suppliers (CLEPA), Fédération Internationale de l’Automobile (FIA), International Motorcycle Manufacturers Association (IMMA), International Organization for Standardization (ISO), Liquid Gas Europe (LGA), International Association for Natural Gas Vehicles (NGV Global), International Organization of Motor Vehicle Manufacturers (OICA), and World Bicycle Industry Association (WBIA).