Proposal to clarify and update transitional provisions, including provisions for extensions of type approvals granted according to the antecedent requirements of the original approval. These amendments also relate to the transfer of brake-related telltale provisions to UN R121. The proposal was adopted by the Working Party on Brakes and Running Gear (GRRF) at its 76th session, based on document GRRF/2014/16 as reproduced in Annex III to the session report.

At its 76th session, GRRF agreed on amendments to the transitional provisions of Regulation No. 13-H. When preparing the official document GRRF/2014/16, the text presented in this amendment was inadvertently omitted.