GAR | TFSR-19-02

Tuesday, 19 May 2026
Week 21

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Environmental and Propulsion Performance Requirements for L-category Veh...

Working Party on Passive Safety | Session 79 | 1-5 Jun

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Latest Documents

19 May 2026 | e-Trailer Industry Group: Status and discussions | GRVA-25-33

(1 posted today) (42 posted during the past week)

e-Trailer Industry Group: Status and discussions

Reference Number: GRVA-25-33

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.

Meeting Sessions: 25th GRVA session (18-22 May)

Document date: 19 May 26

Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking and WP.29 Regulatory Project | Trailer-axle energy and propulsion

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TFSR-19-02

TSFR task force status report to the GRE

Source(s)

Date

27 Sep 2023

Status

Subject

UN R37 Filament Lamps
RE5: Light-source specifications

Meeting(s)

TFSR | Session 19 | 4 Oct 2023

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UNECE server

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Acronyms

GRE: Working Party on Lighting and Light-signalling Equipment (cf French: Groupe de Rapporteurs sur l’Eclairage)

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~~Working Party on Brakes and Running Gear (GRRF)~~
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