Draft agenda for the 45th session of IWG on A-LCA scheduled for 15 December 2026. The agenda covers welcome and introduction, adoption of the agenda and previous meeting minutes, a recap from the last GRPE session, input and new requests for the current compiled document, input from industry guideline, and other business.
Proposal to delete text requiring integration of electrical current at 20 Hz from GTR 21 para. 5.2.1., simplify requirements for determining and verifying K1 and K2 factors in para. 6.1.1.1. and 6.1.1.2. by deleting redundant sentences and SAE J2907, adding conditional manufacturer reporting on K factor determination, and add a note to para. 5.2.1. stating specific humidity need not be measured unless ICE power correction per para. 6.9.3.2. is applied.
Document compares human body model (HBM) capabilities with anthropomorphic test device (ATD) limitations. HBMs enable assessment at lower impact speeds, evaluation of older occupants with age-dependent material properties, checking belt fit across multiple anthropometries, assessment of restraint system interaction with different body shapes, evaluation of varying postures including non-upright hip angles, consideration of pre-crash phase effects on in-crash phase, and addressing injury types limited by ATD sensor availability and biofidelity. HBMs can be used omnidirectionally if validated, whereas ATDs are limited to design range and single loading direction. Harmonization work is needed for active HBMs, anthropometric agreement, belt fit criteria, and spine curvature validation.
Working draft proposal for a 04 series of amendments to UN R51, establishing specifications for sound emission measurement and limits. The regulation sets sound level limits varying by vehicle category, mass, and power output, ranging from 68 to 79 dB(A). It includes methods for measuring vehicle sound outdoors and indoors, specifications for test conditions including vehicle mass, speed, and acceleration, requirements for sound reduction systems and exhaust silencing, transitional provisions, and Real Driving Additional Sound Emission Provisions (RD-ASEP) for M1 and N1 vehicles with specific exemptions based on engine capacity, payload, mass, and power-to-mass ratio.
Proposal to replace the heating rate requirement of ≥15 °C/s with ≥10 °C/s in Annex 9K Appendix 1 Table 1, and insert new Annex 9K Appendix 1bis setting out the Thermal Runaway Trigger Method with a Localized Rapid Heater within the cell casing. The new appendix specifies preparation of the tested-device, selection guide for the heater element with target parameters including material, thickness, area, heating rate, maximum temperature and control method, test procedures for vehicle-based testing, and test procedures for component-based testing.
Calendar of proposed meetings for WP.29 and its working parties in 2027, listing 14 sessions across GRVA, GRBP, WP.29/AC.2, WP.29, GRPE, GRSG, GRE, and GRSP. Sessions are scheduled from January through December with specified dates, half-day allocations, interpretation availability, and expected delegate numbers. Total of 118 half-days or 59 days scheduled.
Calendar of proposed meeting dates for WP.29 and its working parties in 2026, including GRVA, GRBP, GRPE, GRSG, GRE, GRSP, and related administrative committees. Sessions are scheduled across January through December, with specified dates, time schedules, number of half-days, interpretation availability, and expected delegate attendance for each meeting.
A directory listing the chairs, vice-chairs, countries, and mandate expiry dates for WP.29 and its working parties (GRBP, GRE, GRPE, GRVA, GRSP, GRSG), informal working groups, and administrative/executive committees as of 16 November 2026.