Proposal to correct inconsistencies in isolation resistance monitoring system requirements for vehicles of category O₃ and O₄ trailers to provide optical and/or audible warnings via CAN-Bus signal transmission. High voltage REESS isolation resistance requirement set at minimum 100 Ω/Volt or protection degree IPXXB fulfillment. Requirements do not apply to REESS solely installed on vehicles of category O or batteries used for recuperation.

The Working Party on Passive Safety held its 78th session in Geneva from 1-4 December 2025. GRSP adopted amendments to multiple UN Regulations affecting automated vehicles, including UN R11, R12, R14, R16, R17, R21, R29, R94, R95, R100, R127, R129, R134, R135, R137, R145, R153, R173, and R174. Additional proposals addressed hydrogen and fuel cell vehicles, electric vehicle safety, child restraint systems, pedestrian safety, and protective helmets. GRSP approved creation of task forces on emergency door opening and established new working groups on children left in vehicles and equitable occupant protection. Budget constraints affecting UN secretariat operations were noted.

Proposal to correct inconsistencies in isolation resistance monitoring system requirements for vehicles of category O₃ and O₄ trailers to provide optical and/or audible warnings via CAN-Bus signal transmission. High voltage REESS isolation resistance requirement set at minimum 100 Ω/Volt or protection degree IPXXB fulfillment. Requirements do not apply to REESS solely installed on vehicles of category O or batteries used for recuperation.

The Working Party on Passive Safety held its 78th session in Geneva from 1-4 December 2025. GRSP adopted amendments to multiple UN Regulations affecting automated vehicles, including UN R11, R12, R14, R16, R17, R21, R29, R94, R95, R100, R127, R129, R134, R135, R137, R145, R153, R173, and R174. Additional proposals addressed hydrogen and fuel cell vehicles, electric vehicle safety, child restraint systems, pedestrian safety, and protective helmets. GRSP approved creation of task forces on emergency door opening and established new working groups on children left in vehicles and equitable occupant protection. Budget constraints affecting UN secretariat operations were noted.