Correction to the justification provided in GRSG/2026/37.

Proposal to amend UN R18, UN R39, UN R46, UN R55, UN R58, UN R67, UN R73, UN R93, UN R97, UN R102, UN R105, UN R107, UN R110, UN R116, UN R121, UN R122, UN R125, UN R144, UN R147, UN R151, UN R158, UN R159, UN R160, UN R161, UN R162, UN R163, UN R166, UN R169, UN R176, UN R181, UN R182 and UN R183:

• Add new paragraphs defining Software Identification Number by reference to Consolidated Resolution on the Construction of Vehicles (R.E.3) Annex 7, para. 2,
• amend paragraphs concerning production discontinuation to clarify that production is not considered definitively discontinued if vehicle manufacturers intend to obtain subsequent extensions of approval for software updates of vehicles already registered in the market,
• add new paragraphs requiring manufacturers to provide Technical Services with information on all hardware and software having an influence on performance,
• add new paragraphs allowing vehicle manufacturers to apply for new vehicle approvals to differentiate software versions for vehicles already registered in the market from those for new vehicles,
• add new paragraphs to approval forms requesting additional information regarding software identification and software updates, including whether Software Identification Number is held on the vehicle and relevant parameters for identification of vehicles that can be updated with the represented software.

Proposal to insert new para. 5.2.1.1. stating that fonts shown in Table 1 are not intended to be restrictive and other fonts may be substituted if legibility is maintained, and amend Table 1, Note No. 20 to delete the statement that the font of the letters “OFF” or “ESC OFF” is not intended to be restrictive.

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.

Proposal to amend UN Regulation No. 121 by inserting new paragraph 5.2.1.1 stating that fonts shown in Table 1 are not intended to be restrictive and other fonts may be substituted if legibility is maintained. Table 1, Note No. 20 is amended to clarify that the font of letters “OFF” or “ESC OFF” is not intended to be restrictive. The purpose is to clarify the text, provide flexibility, harmonize with international standards, and adapt to current digital work tools.

The supplement accounts for vehicles of categories X and Y, and vehicles with manual mode operating above 6 km/h equipped with an Automated Driving System. Scope updated: Regulation does not apply to vehicles of category Y (no occupants inside) or category X without on-board manual mode. New definition of “Safety Concept” added. Vehicles of category X with on-board manual mode not using driver’s seat may fulfil alternative requirements if manufacturer demonstrates equivalent safety level.

Proposal from the GRSG task force on Automated Vehicles Regulation Screening to enable application of UN R121 to ADS vehicles, including the exemption of vehicles of subcategory Y from the requirements of the Regulation.