5. UN Regulation No. 138 (Quiet Road Transport Vehicles)
11. GRBP recalled the status report of the IWG RD-ASEP Subgroup on UN Regulations Nos. 138 and 51 (GRBP-81-18-Rev.1) and the ensuing discussion (paragraphs 7 and 8 above).
RD-ASEP Subgroup on UN-R 138 and UN-R 51: Status report to GRBP