167. The expert from the United States of America, Chair of IWG on Quiet Road Transport Vehicle GTR (QRTV GTR), recalled the recent entry into force of UN Regulation No. 138 on QRTV as well as of the Federal Motor Vehicle Safety Standard (FMVSS) on Minimum Sound Requirements for Hybrid and Electric Vehicles. He indicated that the IWG as a first step, intends to identify the differences between the requirements of Federal Motor Vehicle Safety Standards (FMVSS) and of the UN Regulation. He further indicated that the next IWG meeting was planned for April or May 2018 in cooperation with the GRB Chair and that the results would be reported to the June 2018 session of AC.3.