86. The representative of the Russian Federation Co-Chair of the IWG on Periodical Technical Inspection (PTI) updated the World Forum on the work of the group. He reported to the World Forum on the seventh meeting of the IWG on PTI was held on 14 June 2017 in Moscow, the Russian Federation (WP.29-172-22). The group reviewed the proposal for a new Rule No. 3 on Periodical Technical Inspections of motor vehicles using Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) in their propulsion system (ECE/TRANS/WP.29/2017/93). CITA proposed to modify the document to refer to the recently approved UN Regulation No. 143 and to remove the reference of 300 ppm to assess gas leakages.