Proposal to insert new paragraphs 0. and 0.1. to 0.1.4. providing introduction to the 01 series of amendments regarding vehicles of categories X and Y and alignment of provisions for all occupants, amend paragraphs 0.1., 0.1.1., 0.1.3., 1.1. and 2.2., footnote 1 to define terms according to Consolidated Resolution R.E.3., amend paragraph 2.7. to define passenger compartment, amend paragraph 4.4., footnote 2 to reference Consolidated Resolution R.E.3., amend paragraph 5.2.1. to require heating systems in each passenger compartment, insert new paragraphs 12. and 12.1. to 12.2.4. providing transitional provisions, amend Annex 5, paragraph 2. to establish surface temperature requirements and allow manufacturers to justify higher temperatures through safety concept demonstration, amend Annex 5, paragraph 2.1. to limit surface temperature to 70°C for uncoated metal or 80°C for other materials, and delete Annex 5, paragraphs 2.2. and 2.3. Transitional provisions apply: as from official entry into force, Contracting Parties shall not refuse type approvals under the 01 series; as from 1 September 2028, Contracting Parties shall not be obliged to accept approvals to the original version first issued after that date; Contracting Parties shall continue accepting original version approvals first issued before 1 September 2028 and equipment/parts approvals issued under the original version.