1. The World Forum for Harmonization of Vehicle Regulations (WP.29) held its 160th session from 25–28 June 2013 chaired by Mr. B. Gauvin (France). The following countries were represented, following Rule 1(a) of the Rules of Procedure of WP.29 (TRANS/WP.29/690 and ECE/TRANS/WP.29/690/Amend.1 and Amend.2):
| Australia | Belgium | Bosnia and Herzegovina |
| Canada | China | Colombia |
| Czech Republic | Ecuador | Finland |
| France | Germany | Hungary |
| India | Indonesia | Italy |
| Japan | Latvia | Luxembourg |
| Malaysia | Netherlands | Norway |
| Republic of Korea | Romania | Russian Federation |
| Serbia | Slovakia | South Africa |
| Switzerland | Thailand | Turkey |
| United Kingdom of Great Britain and Northern Ireland | United States of America | Viet Nam |
Representatives of the European Union (EU) participated.
The following intergovernmental organization (IGOs) also participated: International Telecommunications Union (ITU).
The following nongovernmental organizations were also represented:
Association for Emission Control by Catalyst (AECC)
European Tyre and Rubber Manufacturers’ Association (ETRMA);
European Tyre and Rim Technical Organisation (ETRTO);
International Motor Vehicle Inspection Committee (CITA);
European Association of Automotive Suppliers (CLEPA/MEMA/JAPIA)2;
International Automotive Lighting and Light-Signalling Expert Group (GTB);
Fédération Internationale de l’Automobile (FIA);
Foundation for the Automobile and Society (FIA Foundation);
International Motorcycle Manufacturers Association (IMMA);
International Organization of Motor Vehicle Manufacturers (OICA);
International Organization for Standardization (ISO);
Union of Technical Assistance for Motor Vehicle and Road Traffic (UNATAC).