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 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.