1. The World Forum for Harmonization of Vehicle Regulations (WP.29) held its 156th session from 13 to 16 March 2012, chaired by Mr. B. Kisulenko (Russian Federation). 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): Australia, Austria, Belgium, Bosnia and Herzegovina, Canada, People’s Republic of China, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, India, Italy, Japan, Latvia, Luxemburg, Netherlands, Norway, Poland, Republic of Korea, Romania, Russian Federation, Slovakia, Republic of South Africa, Spain, Sweden, Switzerland, United Kingdom of Great Britain and Northern Ireland, and the United States of America. Representatives of the European Union (EU) participated.

The following non-governmental organizations were also represented:

• International Organization of Motor Vehicle Manufacturers (OICA)
• International Motorcycle Manufacturers Association (IMMA)
• European Association of Automotive Suppliers (CLEPA/MEMA/JAPIA)
• Working Party “Brussels 1952” (GTB)
• Association for Emission Control by Catalyst (AECC)
• International Motor Vehicle Inspection Committee (CITA)
• FIA Foundation for the Automobile and Society and FIA Mobility (FIA)
• Consumers International (CI)

At the invitation of the secretariat, the European Tyre and Rim Technical Organization (ETRTO) and the University of Sao Paolo also participated.