1. The Working Party on Pollution and Energy (GRPE) held its seventy-seventh session from 6 to 8 June 2018, 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): Austria, Canada, China, Czech Republic, France, Germany, Hungary, India, Italy, Japan, Netherlands, Norway, Poland, Republic of Korea (Korea), Romania, Russian Federation, San Marino, Spain, Sweden, Switzerland, United Kingdom of Great Britain and Northern Ireland (UK) and the United States of America (USA). 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 Liquefied Petroleum Gas Association (AEGPL), International Motor Vehicle Inspection Committee (CITA), European Association of Automobile Suppliers (CLEPA/MEMA/JAPIA), European Garage Equipment Association (EGEA), European Tyre & Rubber Manufacturers Association (ETRMA), European Association of Internal Combustion Engine Manufacturers (EUROMOT), International Automobile Federation International Automobile Federation (FIA), International Association for Natural Gas Vehicles (IANGV/NGV Global), International Council on Clean Transportation (ICCT), International Motorcycle Manufacturers Association (IMMA) and International Organization of Motor Vehicle Manufacturers (OICA).