21. The expert from India introduced ECE/TRANS/WP.29/GRSG/2019/4 to align UN Global Technical Regulation (GTR) No. 6 with UN Regulation No. 43 on the optional use of laminated-glass panes with improved mechanical properties, particularly for the front, exterior, forward-facing glazing of the upper deck of a double-deck vehicle. The expert from Germany raised concern on the justification in the document.

23. GRSG agreed to resume consideration of these subjects at its October 2019 session. The experts from Germany and India volunteered to prepare revised official documents to that end. The expert from India also offered to review the authorization to develop Amendment 2 to UN GTR No. 6 and to follow up on the necessary procedure at the next sessions of the Executive Committee AC.3 of the 1998 Agreement.

18. As a follow-up of WP.29-175-30, the expert from India introduced GRSG-115-38 to align UN GTR No. 6 on the optional use of laminated-glass panes with improved mechanical properties especially those for the front, exterior, forward-facing glazing of the upper deck of a double-deck vehicle. GRSG welcomed the proposal and agreed to resume consideration at its next session in April 2019. The secretariat was requested to circulate GRSG-115-38 with an official symbol.

137. The representative of the Republic of Korea reported on the progress of work of the IWG on Panoramic Sunroof Glazing (PSG) in developing an amendment to UN GTR No. 6. He announced that a research programme is expected to start in August 2018 for a duration of 2 or 3 years. The representative of the Republic of Korea requested WP.29 views on the way forward, and proposed two options: (a) to extend the mandate of the IWG to follow the research activities or (b) to freeze the activities until the research work is finalized.

138. The representative of Italy suggested extending the mandate, so that the IWG can be active if desired.

139. AC.3 endorsed the extension of the mandate of the IWG on PSG until April 2020.