UN R125 — Supplement 1 to the 03 series of amendments

New paragraph 0.1. says that Supplement 1 takes into account vehicles of categories X and Y, and vehicles equipped with an Automated Driving System (ADS). Paragraph 0.1.1. says that vehicles of category Y are exempt from the scope of this Regulation. Paragraph 0.1.2. considers 3 manual modes for vehicles of category X. Category X vehicles with manual operation by a Remote-Control device intended to be operated in close proximity of the vehicle are exempted from the scope. With manual operation seated in a driver’s seat, the general provisions of this UN Regulation apply. With manual operation onboard the vehicle other than seated in a driver’s seat, alternative provisions apply.

New paragraph 1.4. says that this UN Regulation does not apply to vehicles of category Y. It also does not apply to vehicles of category X without a manual mode operated on-board the vehicle.

New paragraph 5.6. covers vehicles of category X with a manual mode intended to be operated on-board the vehicle not using a driver’s seat. These vehicles may fulfil alternative requirements, in agreement with the Technical Service and Type Approval Authority. To use them, the manufacturer must demonstrate, with the safety concept defined for manual operation, safety equivalent to the requirements in paragraphs 5.1 to 5.5. The Test Report must describe the alternative provisions that are applied and the vehicle’s performance.

New paragraph 2.21. defines “Safety Concept” as a description of the measures for safe operation under fault (functional safety) and non-fault conditions (operational safety). The definition goes on: “in such a way that it is free of unreasonable safety risks to the vehicle occupants and other road users”. A fallback to partial operation or to a backup system may be a part of the safety concept.

Paragraphs 5.1.3.4. and 5.1.3.5. now refer to UN Regulation No. 176 instead of “UN Regulation [XXX]”. In paragraph 5.1.3.5., “meeting the requirements” becomes “meeting the technical requirements and transitional provisions”. In paragraph 5.1.3.4., the amendment also deletes the word “and” before each “declined”.

In the footnote “As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.)”, the document is now ECE/TRANS/WP.29/78/Rev.8 instead of Rev.6, para. 2. AC.1 adopted ECE/TRANS/WP.29/2026/122 as amended by Annex VI of ECE/TRANS/WP.29/1192, which gives this footnote without “para. 2”. The footnote on the distinguishing numbers of the Contracting Parties to the 1958 Agreement now refers to document ECE/TRANS/WP.29/78/Rev.8 instead of Rev.2/Amend.3. It also gives a new web address.