which has adopted a Regulation under the 1958 Agreement may grant approvals in accordance with this Regulation and is required to accept the approval of any other P.C. The World Forum for Harmonisation of Vehicle Legislation and the European Commission are currently working on harmonisation between UN rules and EU directives. At present, some of the EU directives are technically equivalent to UN rules or refer only to the requirements of UN regulations. UN GTRs are the technical regulations established under the 1998 Agreement and do not concern a type-approval or certification procedure, as mentioned in European directives or UN regulations. UN regulations are considered candidates for the development of UN RTGs. .