Proposal to amend UN R122 to introduce the 01 series of amendments. The amendments account for vehicles of categories X and Y, align provisions in Annex 5 for all occupants, and update the Regulation for fitness for Automated Driving System. Modifications include new introduction paragraphs addressing surface temperature allowances for drivers and passengers regardless of seating position or vehicle category, with special consideration for rear seats of M₁ vehicles. Surface temperature limits are set at 70°C for uncoated metal or 80°C for other materials. Transitional provisions are established, with mandatory acceptance of 01 series amendments from the official entry into force date and continued acceptance of preceding series approvals until 1 September 2028.