6. The expert from OICA informed GRE that the Informal Working Group on Periodical Technical Inspection (IWG PTI), in one of its documents (PTI-10-03%20Review%20of%20UN%20ECE%20Regulations.xlsx?api=v2" target="_blank">PTI-10-03), had indicated the need to ensure the readability of an approval number for the rear fog lamps (UN Regulation No. 38) in an installed state. The Chair requested the secretariat to clarify this issue with IWG PTI.