1178 Laws, regulations, reports. Measures taken after agreement. TREATIES any Administration may accept in substitution therefor any other fitting, appliance or apparatus, or type thereof, or any other arrange- ment, provided that such Administration shall have been satisfied by suitable trials that the fitting, appliance or apparatus, or type thereof, or the arrangement substituted is at least as effective as that specified in the present Convention. Any Administration which so accepts a new fitting, appliance or apparatus, or type thereof, or new arrangement, shall communicate the fact to the other Administrations, and, upon request, the par- ticulars thereof, together with a report on the trials made. ARTICLE 58. Laws, Regulations, Reports. The Contracting Governments undertake to communicate to each other- (1) the text of laws, decrees and regulations which shall have been promulgated on the various matters within the scope of the present Convention; (2) all available official reports or official summaries of reports in so far as they show the results of the provisions of the present Convention, provided always that such reports or summaries are not of a confidential nature. The Government of the United Kingdom of Great Britain and Northern Ireland is invited to serve as an intermediary for collecting all this information and for bringing it to the knowledge of the other Contracting Governments. ARTICLE 59. Measures taken after Agreement. Where the present Convention provides that a measure may be taken after agreement between all or some of the Contracting Govern- ments, the Government of the United Kingdom of Great Britain and Northern Ireland is invited to approach the other Contracting Governments with a view to ascertaining whether they accept such proposals as may be made by any Contracting Government for effecting such a measure, and to inform the other Contracting Govern- ments of the results of the enquiries thus made.