The following Contracting Parties are officially listed by the World Forum as applying this regulation. Nonetheless, this designation does not necessarily mean that a given Contracting Party either issues its own type approvals or accepts type approvals issued by other parties as there are exceptions.
| Contracting Party | Effective Date | ||
|---|---|---|---|
| Germany | 13 November 1973 | ||
| France | 28 October 1972 | ||
| Italy | 05 May 1972 | ||
| Australia | 31 July 2010 | ||
| Austria | 23 July 1990 | ||
| European Union | 24 March 1998 | ||
| Japan | 31 March 2000 | ||
| Belarus | 02 July 1995 | ||
| Belgium | 01 December 1971 | ||
| Bosnia and Herzegovina | 06 March 1992 | ||
| Bulgaria | 01 January 2007 | ||
| Croatia | 08 October 1991 | ||
| Cyprus | 01 May 2004 | ||
| Czech Republic | 30 July 1972 | ||
| Denmark | 22 March 1977 | ||
| Estonia | 25 July 1999 | ||
| Finland | 14 May 1977 | ||
| Russian Federation | 17 February 1987 | ||
| Poland | 04 March 1988 | ||
| United Kingdom of Great Britain and Northern Ireland | 11 February 1973 | ||
| North Macedonia | 17 September 1991 | ||
| Greece | 03 December 1995 | ||
| Hungary | 18 October 1976 | ||
| Ireland | 24 March 1998 | ||
| Latvia | 18 January 1999 | ||
| Lithuania | 29 March 2002 | ||
| Ukraine | 08 October 2002 | ||
| Luxembourg | 04 October 1987 | ||
| Malaysia | 04 April 2006 | ||
| Turkey | 07 July 2000 | ||
| Netherlands | 21 January 1973 | ||
| New Zealand | 19 March 2002 | ||
| Republic of South Africa | 17 June 2001 | ||
| Switzerland | 02 February 1996 | ||
| Malta | 01 May 2004 | ||
| Norway | 21 February 1988 | ||
| Montenegro | 03 June 2006 | ||
| Serbia | 27 April 1992 | ||
| Sweden | 01 December 1971 | ||
| Portugal | 24 March 1998 | ||
| Romania | 01 July 1977 | ||
| Slovak Republic | 30 July 1972 | ||
| Slovenia | 24 July 1983 | ||
| Spain | 01 December 1971 | ||
| Albania | 05 November 2011 | ||
| Georgia | 25 May 2015 | ||
| Egypt | 03 February 2013 | ||
| Republic of Moldova | 20 November 2016 | ||
| San Marino | 26 January 2016 | ||
| Nigeria | 17 December 2018 | ||
| Republic of Armenia | 30 April 2018 | ||
| Philippines | 03 November 2022 | ||
| Republic of Uganda | 23 August 2022 | ||
| Kyrgyz Republic | 31 October 2023 | ||
| Socialist Republic of Viet Nam | 24 September 2023 | ||
| Islamic Republic of Pakistan | 24 April 2020 |