19. Recalling the discussion on ECE/TRANS/WP.29/GRSG/2015/3 at the previous GRSG session, the expert from CLEPA announced his intention to submit, jointly with OICA and for consideration at the next GRSG session, a revised set of provisions for a well-defined vision zone of vehicles of categories M and N other than M1, aimed at allowing a better transmission of electromagnetic signals.

20. The expert from Hungary presented GRSG-109-10 justifying the amendments to UN Regulation No. 43, proposed in ECE/TRANS/WP.29/GRSG/2015/4 and aimed at clarifying the use of thick glass panes for multiple glazed units. He especially wondered why the headform test was applicable for multiple glazing, but not necessarily for single pans. The expert from Germany explained that the mechanical properties of single pans of safety glazing were different than those of multiple-glazed pans and, therefore, the single pans did not necessarily need to be tested for critical values in case of head impacts. Following the discussion, GRSG agreed to remove ECE/TRANS/WP.29/GRSG/2015/4 from its agenda.

21. Referring to the discussion at the previous session of GRSG, the expert from Hungary introduced ECE/TRANS/WP.29/GRSG/2015/22 clarifying the requirements on the abrasion test machine. The experts from Germany informed GRSG about the status of work in ISO and announced that the corresponding ISO standard was in the process of being finalized and would hopefully be published by the end of the year. GRSG agreed to resume consideration of ECE/TRANS/WP.29/GRSG/2015/22 at its next session in April 2016.