100. WP.29 took note of the progress made on the periodic technical inspection of Compressed Natural Gas (CNG) and Liquefied Natural Gas (LNG) vehicles as well as electric vehicles. WP.29 requested the secretariat to distribute WP.29-171-21 with an official document at its 172nd session in June 2017.

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.

99. The representative of the Russian Federation, Co-Chair of the IWG on PTI, presented ECE/TRANS/WP.29/2017/93 proposing the establishment of a new Rule on Periodical Technical Inspections of motor vehicles using Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) in their propulsion system to be annexed to the 1997 Agreement. Several Contracting Parties indicated that they were in the process of evaluation of the proposal. WP.29 requested the secretariat to prepare a consolidated document for the November 2017 session.