18. The expert from EC reported on amending and supplementing the Acoustic Vehicle Alerting System (AVAS) requirements in Annex VIII to EU Regulation No. 540/2014, based on the provisions of Regulation No. 138 on Quiet Road Transport Vehicles (QRTV) and its 01 series of amendments (GRB-66-16).

19. GRB noted that the National Rule on Minimum Sound Requirements for Hybrid and Electric Vehicles in the United States of America came into force on 5 September 2017 and that the work of IWG QRTV GTR would resume shortly.

20. The expert from OICA proposed to slightly modify the wording of the transitional provisions introduced in the 01 series of amendments to Regulation No. 138 (ECE/TRANS/WP.29/GRB/2017/7). The Chair proposed to postpone consideration of this document until the adoption, at the November 2017 session of WP.29, of the Draft General Guidelines for United Nations regulatory procedures and transitional provisions in UN Regulations (ECE/TRANS/WP.29/2017/107) (see para. 30 below).