52. The representative of Japan, Co-Chair of the IWG on IWVTA, reported on the progress at the eighteenth meeting of the group. He reported that IWG had introduced two definitions for type: vehicle type, which could contain all variants regardless of their level of conformity, and which corresponded to what we are used to; and IWVTA type, which defined one level of conformity within a vehicle type. He presented informal document WP.29-166-15 on the changes required to the draft UN Regulation No. 0. He clarified that these changes would be included in the text during the September session of the group and would further be included as Revision 1 to document ECE/TRANS/WP.29/2015/68. He notified WP.29 that UN Regulation No. 0 would be pre-tested and that the contact point for pre-testing had been indicated in the informal document for anyone interested. The representative of the Russian Federation highlighted mutual proposal with the European Commission on the applicability of national and regional requirements in addition to IWVTA if there are no such requirements in the existing UN Regulations

53. The representative of Switzerland asked why the Unique Identifier could not replace the conventional type approval marking for UN Regulation No. 0. The representative of Japan replied that the use of the Unique Identifier as replacement for the conventional marking would have no added value. The representative of the Netherlands added that the standard marking of vehicles included the letter “U” for universal type approval or the letter “L” for limited international whole vehicle type approval, and that if the Unique Identifier were used there would be no indication of what approval is granted to the vehicle; there would be no distinction between limited and universal international whole vehicle type approval.