42. GRSP noted that the consideration of draft Revision 3 to the 1958 Agreement (ECE/TRANS/WP.29/2014/53) was scheduled for the June session of WP.29 as well as other pending issues such as: (i) proxy vote, (ii) the final list A of draft UN Regulation No. 0 and (iii) common commencement dates for new series of amendments to UN Regulations. GRSP noted WP.29-162-18 introducing principles for supplements, series of amendments and Revisions to UN Regulations. GRSP finally agreed to move UN Regulation No. 16 to the final list A, while UN Regulation No. 14 should be moved to list B.

43. Moreover, GRSP noted GRSP-55-17, indicating possible scenarios for the introduction of different propulsion tractions into the UN Regulation in view of IWVTA. The expert from OICA stated that UN Regulations should be considered technologically and fuel neutral. The expert from Germany indicated that the solution of developing specialized Annexes, each dedicated to specific fuel systems, could facilitate Contracting Parties when applying preceding series of amendments. However, he suggested that GRSP-55-17 would be further discussed and referred to the IWG on IWVTA to verify if such a solution would be viable for all UN Regulations. He also envisaged that the issue of cross referencing to other UN Regulations should be further developed by the IWG. GRSP agreed to resume discussion on this issue and to refer in the meantime GRSP-55-17 to the IWVTA IWG for consideration.