Work in progress clean draft proposal to establish a new UN Regulation on crashworthiness of vehicles of category N₁Y with regard to protection of fuel system integrity, protection against electrical shock and vehicle crash compatibility in the event of frontal, rear-end and lateral collision. The regulation applies to vehicles of category N₁Y and specifies test procedures for frontal, lateral and rear-end collisions based on UN R94, UN R95, UN R137 and UN R153. Requirements include fuel system integrity with no more than slight leakage or continuous leakage not exceeding 30 g/min, hydrogen leakage rate not exceeding 118 NL per minute, protection against electrical shock through absence of high voltage, low electrical energy, physical protection or isolation resistance, electrolyte leakage limits, REESS retention and fire hazard prevention, and crash compatibility criteria with Crash Compatibility Criterion not exceeding 40–45 g and Crash Compatibility Value not exceeding 100–120 gt.

Clean work-in-progress draft proposal to insert a new para. 0 establishing an introduction for vehicles of categories X and Y equipped with an Automated Driving System, and amend para. 6.1.5. to clarify that the exemption for sensors, cameras, and radar devices being part of driver assistance systems does not apply to automated driving systems unless the ADS performance of the DDT is not affected.

Clean work-in-progress draft proposal to amend para. 0 to introduce provisions for vehicles of category Y and vehicles equipped with an Automated Driving System, amend para. 1.4. to specify that the Regulation does not apply to vehicles of category Y and to exempt certain vehicles of category N₁, amend para. 2.8. to define the bonnet rear reference line for vehicles of category Y without a windscreen, amend para. 2.22. to include automated driving sensors in the definition of front structure for vehicles of category X and Y, amend para. 2.29. to specify normal ride attitude for vehicles of category X and Y, amend para. 2.32. to define side reference lines for vehicles of category Y without A-pillars, amend para. 2.44. to define windscreen test area boundaries for vehicles of category Y without a windscreen, amend para. 2.45. to specify cowl monitoring area for vehicles of category Y without a windscreen, and amend para. 5.3.1.2. to modify requirements for Actively Regulated Hydro-pneumatic Suspension System when an Automated Driving System feature is active.

Agenda for the 29th meeting of the GRSP Task Force on Advanced Vehicle Regulatory Support, scheduled for 5 October 2026. The meeting will address Y-category regulatory framework developments for N1 vehicles, Y-category pedestrian protection under UN R127, UN R42 matters from GRSP-79, Y-category exclusion in UN R134, and other business.

Meeting minutes covering Y-category regulatory framework for N₁ vehicles, a revised version of which was written during the meeting. OICA presented a proposal for UN R127 on Y-category pedestrian protection, which was accepted; measurement data collection according to the proposal is the next step. EC presented a draft on UN R42, with NL proposing additions regarding automated driving systems exemptions and introduction text; EC to update the draft accordingly. UN R134 Y-category exclusion was listed with no discussion recorded.

Proposal to establish a new UN Regulation for approval of vehicles of category N₁Y regarding fuel system integrity, electrical shock protection, and crash compatibility. The regulation specifies requirements for frontal, rear-end, and lateral collision tests based on existing UN Regulations (No. 94, 95, 137, and 153), with provisions for liquid fuel leakage limits, hydrogen fuel system integrity including shut-off valve closure and leakage rate limits, electrical protection from high voltage systems, REESS retention and fire hazard prevention, and crash compatibility criteria and values determined from longitudinal acceleration measurements.

Proposal to insert a new introduction para. 0. to account for vehicles of categories X and Y equipped with an Automated Driving System (ADS), amend footnote 1 in sections 0. and 1. to reference the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document ECE/TRANS/WP.29/78/Rev.8, and amend para. 6.1.5. to clarify that the exemption for damaged driver assistance system sensors does not apply to vehicles of categories X and Y or automated driving systems unless the ADS performance of the DDT is not affected.

Proposal to amend para. 0. to extend application to vehicles of category Y, amend para. 1.4. to clarify non-applicability to category Y vehicles, add provisions to paras. 2.8., 2.22., 2.29., 2.32., 2.44., and 2.45. defining terms and test areas for category Y vehicles without windscreens, and replace language in para. 5.3.1.2. regarding Automated Driving System activity and delete footnote 9.

Task force in-session amendments to the proposal to establish uniform provisions for approval of vehicles of category N₁Y regarding protection of fuel system integrity, protection against electrical shock, and vehicle crash compatibility. Requirements address liquid fuel leakage limits, compressed hydrogen storage system integrity including leakage rates and container retention, high voltage electrical system protection through absence of high voltage, low electrical energy, physical protection, or isolation resistance, electrolyte leakage limits for rechargeable energy storage systems, REESS retention, fire and explosion hazards, and crash compatibility criteria. Testing includes frontal collision per UN R94 or UN R137, lateral collision per UN R95, and rear-end collision per UN R153. Vehicles derived from approved N₁ types complying with specified series may demonstrate compliance through previous test results.

Task force in-session amendments to the proposal to insert a new introduction paragraph accounting for vehicles of category X and Y, amend para. 6.1.5. to clarify that the exemption for driver assistance systems does not fully apply to automated driving systems where the perception system forms part of the driving function, and make editorial improvements replacing ‘disoriented’ with ‘misaligned’ and ‘driver assist systems’ with ‘driver assistance systems’. The amendment enables application of UN R42 to vehicles equipped with an Automated Driving System.

Task force in-session amendments to the proposal to amend para. 0. to introduce provisions for vehicles of category Y and Automated Driving Systems, amend para. 1.4. to exclude category Y vehicles and exempt certain category N₁ vehicles, add sentences to paras. 2.8., 2.22., 2.29., 2.32., 2.45. defining or clarifying applicability for category Y vehicles, amend para. 2.44. to define windscreen test area for category Y vehicles without windscreens, and replace language in para. 5.3.1.2. to refer to active ADS rather than ADS performing the Dynamic Driving Task.