Equipment and Parts which can be fitted and/or be used on Wheeled Vehicles", or 1998 Agreement, is a subsequent agreement. Following its mission to harmonize vehicle regulations, the UNECE solved the main issues (Administrative Provisions for Type approval opposed to self-certification and mutual recognition of Type Approvals) preventing non-signatory Countries to the 1958 Agreement to fully participate to its activities. The 1998 Agreement is born to produce meta regulations called Global Technical Regulations without administrative procedures for type approval and so, without the principle of mutual recognition of Type Approvals. The 1998 Agreement stipulates that Contracting Parties will establish, by consensus vote, United Nations Global Technical Regulations (UN GTRs) in a UN Global Registry. The UN GTRs contain globally harmonized performance requirements and test procedures. Each UN GTR contains extensive notes on its development. The text includes a record of the technical rationale, the research sources used, cost and benefit considerations, and references to data consulted. The Contracting Parties use their nationally established rulemaking processes when transposing UN GTRs into their national legislation. The 1998 Agreement currently has 33 Contracting Parties and 14 UN GTRs that have been established into the UN Global Registry. Manufacturers and suppliers cannot use directly the UN GTRs as these are intended to serve the Countries and require transposition in national or regional law. 2013 Transatlantic Trade and Investment Partnership (proposed) As part of the Transatlantic Trade and Investment Partnership (TTIP) negotiations, the issues of divergent standards in automobile regulatory structure are being investigated. TTIP negotiators are seeking to identify ways to narrow the regulatory differences, potentially reducing costs and spurring additional trade in vehicles. OICA Organisation Internationale des Constructeurs d'Automobiles (OICA) hosts on its web site the working documents from various United Nations expert groups including World Forum for Harmonization of Vehicle Regulations. See also Vehicle regulation Car safety Worldwide harmonized Light vehicles Test Procedures National Highway Traffic Safety Administration Federal Motor Vehicle Safety Standards Federal Motor Vehicle Safety Standard 108 Automotive lighting Headlamps References External links UN Regulations World Forum for Harmonization of Vehicle Regulations (WP.29) – How It Works, How to Join It World Forum for Harmonization of Vehicle Regulations FAQ Automotive standards Automotive safety United Nations Economic Commission for Europe