Presentation on electrically propelled and recuperating trailers. The document outlines communication flows between towing vehicles and e-trailers using ISO 11992-2 over ISO 7638-1, involving parameter groups EBS14 (control), EBS28 (energy/state of charge), and EBS29 (status). Key principles include the towing vehicle setting control modes and requesting torque, with trailers reporting capabilities. The document discusses support for maximum three e-axle equipped trailers due to bandwidth limitations, enabling of e-trailer control via CANopen Service Data Objects, and backward compatibility with ISO 11992-2:2014. Amendments to UN Regulation 13 are planned with target entry into force in May 2028.

The e-Trailer Industry Group reports on discussions regarding electrically propelled and recuperating trailers. ISO 11992-2 Edition 4 is not safely implementable due to incompatibility with current UN regulations, missing PGNs, and risks of malfunction. ISO/TC 22/SC 31/WG 4 launched Edition 5, targeting publication in early 2027. Amendments to UN R13 and UN R100 are being developed in phases, with Phase 1 addressing trailer dynamo function and Phase 2 addressing e-axle trailers. Two workshops with Contracting Parties are planned to establish shared understanding and develop concrete parameter extensions for amending UN Regulations.