11 Jan 2021 GTR 4: Proposal to amend document GRPE/2021/7 (Japan) GRPE-82-09/Rev.1 2021-01-11 Proposal to improve the text of provisions introduced in Amendment 3 to UN GTR No.4. Japan
4 Nov 2020 GTR 4: Proposal for an amendment (Japan) GRPE/2021/7 2020-11-04 Proposal to correct the improper or confusing provisions described in Amendment 3 to UN GTR No.4. Japan
11 Feb 2011 Release of HILS Open source model for HD Hybrid Vehicle using rigid model (Japan) HDH-04-03 2011-02-11 Japan
27 Jan 2012 Notifications under the 1998 Global Agreement (Japan) - 2012-01-27 Notifications concerning the establishment of UN Global Technical Regulations and the status of their application among the Contracting Parties to the 1998 Global Agreement. Japan
27 Jan 2012 Japan status report on transposition of GTR 4 (Japan) No Reference 2012-01-27 Notification that the Government of Japan is considering the details of the test procedures of the Worldwide Harmonized Heavy-duty Vehicle Emissions Certification Procedures (GTR No. 4) in order to decide whether to transpose the provisions into its national regulations. Japan