Proposal to insert new introductory paragraphs 0. and 0.1. to 0.1.4., amend paragraph 1. – Scope, amend paragraph 1 footnote 1, insert new paragraph 2.10., amend paragraph 4.4.1. footnote 2, amend paragraph 5., and amend paragraph 5.1.4. to UN Regulation No. 121 to take into account vehicles of categories X and Y, as well as vehicles with a manual mode operating at speeds above 6 km/h equipped with an Automated Driving System.