168. The representative from the United States of America on behalf of the sponsors (Japan, the Republic of Korea and the European Union) of the IWG on UN GTR No. 13 – Phase 2, reported to AC.3 on the last IWG meeting (5 to 7 March 2019) in Vancouver, Canada. She stated that more than sixty participants from contracting parties, industry, standardizations organizations and academia attended the meeting. She noted that the focus had mainly been on technical items for Phase 2, requirements for heavy duty vehicles and buses, material compatibility, tank stress rupture, fire test parameters and clarification of test existing procedures of the Phase 1 of the UN GTR. She added that there were five IWG task forces on specific technical items: (i) heavy duty vehicles and buses, that address inter alia roll-over (ii) fuelling receptacle requirements, that is preparing a draft proposal on requirements which are based on the geometry requirements for different refuelling pressures (iii) recommendations for test procedures, (aimed to complete its work by the next IWG meeting) (iv) fire test related work, within which Japan was conducting a series of test requirements to determine the test parameters (work is to be completed by the end of 2019) and (v) recommendations from ISO TC 197 and whether to include the rational section into technical information. She explained that the materials from the meeting had been in preparation, that progress was satisfactory, and the work was expected to be finished by the end of 2020. She informed AC.3 that the next meeting of the group had been scheduled for June 2019 in China.