6. The expert from the Czech Republic introduced GRSG-112-16 to improve the safety requirements for trolleybuses, particularly the double insulation of circuits directly connected to the overhead lines. GRSG welcomed the proposal and agreed to resume consideration of this subject at its next session on the basis of an official document.

6. The expert from the Czech Republic introduced ECE/TRANS/WP.29/GRSG/2017/14 to improve the safety requirements for trolleybuses, particularly the double insulation of circuits directly connected to the overhead lines. GRSG adopted ECE/TRANS/WP.29/GRSG/2017/14 and requested the secretariat to submit it to WP.29 and AC.1 as draft Supplement 7 to the 06 series of amendments, as draft Supplement 6 to the 07 series of amendments and as part (see para. 5) of draft 08 series of amendments to UN Regulation No. 107 for consideration at their March 2018 sessions.