2 ( S.R.2 ) for both the 1958 and 1998 Agreements , in which the drawings and technical specifications of any test device used in UN Regulations and UN GTRs could be incorporated as addenda to S.R.2 . The World Forum agreed on the structure of the proposal and on its adoption by both , the Administrative Committee of the 1958 Agreement ( AC.1 ) and by the Executive Committee of the 1998 Agreement ( AC.3 ) .