57. The secretariat introduced the ECE/TRANS/WP.29/2017/54, ECE/TRANS/WP.29/2017/55 and ECE/TRANS/WP.29/2017/109. The expert from ETRTO introduced GRRF-84-18 on schedule 4 of Revision 3 to the 1958 Agreement. GRRF raised concerns, in particular, on the defined approval number format prescribed in Schedule 4.

Documentation
GRRF-84-18 | Proposal for amendments to Schedule 4 of Revision 3 of the 1958 Agreement (ETRTO)
WP.29/2017/54 | Explanation of UN Regulation No. 0 on the International Whole Vehicle Type Approval - questions and answers
WP.29/2017/55 | Revision 3 of the 1958 Agreement - Questions and answers
WP.29/2017/109 | Explanation to UN Regulation No. 0 on the International Whole Vehicle Type Approval - Questions and answers