Proposal to amend the scope to allow type approval of vehicles of categories M₁, M₂, N₁ and N₂ with a reference mass not exceeding 2,840 kg as direct approvals rather than only as extensions based on approved configurations below 2,610 kg. The modification permits manufacturers to obtain type approval for vehicles within the 2,610 kg to 2,840 kg reference mass range regardless of whether lower-mass configurations of the same vehicle type are approved, addressing concerns that the previous restriction created market distortions affecting different manufacturers differently, a concern heightened by fleet electrification.

Proposal to amend Annex A1 para. 3.2.12.2.7.6.3. to clarify OBD output codes and format documentation requirements, insert new definitions for ‘confirmed fault code’, ‘cold start’, and ‘emission control components’ in para. 3.10.22. to 3.10.24., amend table titles for Tables 4A and 4B in para. 6.8.2. to clarify applicability levels and WLTP phases, amend Annex B5 para. 4.2.2.2. Table A5/1 analytical balance verification criteria, amend Annex C5 para. 3.3.3.5. and 3.3.4.(e) to clarify emission-related powertrain component monitoring requirements, amend para. 3.8.1. to specify fault code erasure conditions based on engine warm-up cycles or driving cycles, insert new para. 3.8.2. for pending fault code erasure, amend Appendix I para. 6.5.1. to clarify ‘if available’ signal usage, amend para. 6.5.3.1. to allow ISO 13400-2 and ISO 13400-4 standards as options from 1 January 2029 for non-pure electric vehicles, and amend para. 7.3.2. regarding denominator increments for temperature sensor and boost pressure control system monitors.

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Proposal to:

• Amend para. 3.7.1. to define rated engine power to include system power as per UN Regulation No. 177 if applicable,
• Amend para. 6.3.2.2. to add applicability scope for Level 1A only or 4-phase WLTP test only,
• Amend para. 6.3.2.3. to restructure interpolation family requirements for PEVs with applicability limited to Level 1B or 3-phase WLTP test,
• Amend Annex B1 para. 2.3.2. to exclude PEVs from Class 3 vehicle classification for Level 1B or 3-phase WLTP test,
• Amend Annex B4 para. 6.2.1. to require new vehicle selection upon each change of range and permit re-use of original measurements if vehicle is reselected,
• Amend Annex B4 para. 6.2.4. to establish two-year approval period for wind tunnel facilities with provisions for extension every two years upon manufacturer provision of modification lists and measurement results at three-month intervals,
• Amend Annex B8 para. 1.4. to define vehicle classification and add applicability scope,
• Amend Annex B8 para. 1.4.1.2. to allow use of peak power according to UN Regulation No. 177 for multiple electric machines,
• Amend Annex B8 para. 3.4.1. to add Level 1B applicability for Consecutive cycle Type 1 test procedure selection,
• Amend Annex B8 para. 4.1.2. to remove Level 1B charge-depleting CO₂ emission calculation and clarify 4-phase WLTP test applicability concerning approval of wind tunnel facilities, with reference to GRPE/2026/44.

Proposal to:

• Insert new paragraphs in the introduction to clarify application to vehicles with Automated Driving Systems,
• Add definitions for ADS, ADS road load determination mode, ADS testing mode, and ADS user,
• Amend definitions of mass in running order, powered axle, reference mass, driver user-selectable mode, predominant mode, and configurable start mode to account for vehicles of categories X and Y,
• Amend the On-Board Diagnostic system definition and malfunction indicator definitions,
• Insert footnotes referencing the Consolidated Resolution on the Construction of Vehicles,
• Renumber and amend footnotes regarding Contracting Parties,
• Amend road load family and road load matrix family criteria,
• Amend tables regarding vehicle classifications,
• Amend OBD family definitions,
• Amend reagent warning and reagent inducement system provisions throughout Appendix 6,
• Amend provisions for driver user-selectable modes in Annexes A1 and B6,
• Add special provisions for vehicles of categories X and Y requiring ADS road load determination mode and ADS testing mode in Annexes B4 and B6,
• Amend provisions regarding vehicle operation and testing to reference ADS user in addition to driver,
• Amend provisions in Annexes B8, C3, C4, and C5 to accommodate vehicles equipped with ADS.