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).