1. The World Forum for Harmonization of Vehicle Regulations (WP.29) held its 174th session from 13 to 16 March 2018, chaired by Mr. A. Erario (Italy). The following countries were represented, following Rule 1 of the Rules of Procedure of WP.29 (ECE/TRANS/WP.29/690/Rev.1): Australia, Austria, Belgium, Bosnia and Herzegovina, Brazil, Bulgaria, Canada, Croatia, China, Colombia, Czech Republic, France, Germany, Hungary, India, Italy, Japan, Kazakhstan, Latvia, Luxembourg, Malaysia, Netherlands, Norway, Poland, Republic of Korea, Romania, Russian Federation, San Marino, South Africa, Spain, Sweden, Switzerland, Turkey, Uruguay, United Kingdom of Great Britain and Northern Ireland and United States of America. Representatives of the European Union participated. The following governmental organizations were represented: International Telecommunication Union (ITU) and the United Nations Industrial Development Organization. The following intergovernmental organizations were represented: the Eurasian Economic Commission (EEC). The following non-governmental organizations were also represented: Association for Emissions Control by Catalyst (AECC), European Association of Automotive Suppliers (CLEPA/MEMA/JAPIA);1 European Transport Safety Council (ETSC), European Tyre and Rim Technical Organization (ETRTO), Consumers International (CI), FIA Foundation for the Automobile and Society, Global New Car Assessment Programme (Global NCAP), International Automotive Lighting and Light Signalling Expert Group (GTB), International Motorcycle Manufacturers Association (IMMA), International Motor Vehicle Inspection Committee (CITA), the International Organization of Motor Vehicle Manufacturers (OICA) and Society of Automotive Engineers International. Other non-governmental organizations were represented following Rule 1(d): American Automotive Policy Council (AAPC), the Recreational Vehicle Industry Association (RVIA) and World Bicycle Industry Association (WBIA). Other non-governmental organizations, private sector entities, independent experts and observers were represented: Fédération Internationale de l’Automobile (FIA), Motor & Equipment Manufacturers Association (MEMA).