1. The Working Party on Pollution and Energy (GRPE) held its seventy-fifth session from 6 to 9 June 2017, with Mr. A. Rijnders (Netherlands) as Chair. Experts from the following countries participated in the work following Rule 1(a) of the Rules of Procedure of the World Forum for Harmonization of Vehicle Regulations (WP.29) (TRANS/WP.29/690, as amended): Australia, Austria; Canada; China; Czech Republic; France; Germany; Hungary; India; Italy; Japan; Netherlands; Poland; Republic of Korea (Korea); Russian Federation; Spain; Sweden; Switzerland; United Kingdom of Great Britain and Northern Ireland (UK) and the United States of America. Experts from the European Commission (EC) also participated. Experts from the following non-governmental organizations took part in the session: Association for Emissions Control by Catalyst (AECC); European Association of Automobile Suppliers (CLEPA/MEMA/JAPIA); European Federation for Transport and Environment (T&E); European Garage Equipment Association (EGEA); International Association for Natural Gas Vehicles (IANGV/NGV Global); International Motor Vehicle Inspection Committee (CITA); International Motorcycle Manufacturers Association (IMMA); International Organization of Motor Vehicle Manufacturers (OICA) and The European Association of Internal Combustion Engine Manufacturers (EUROMOT).