GRVA/2026/16
UN R171: Proposal for a Supplement [4] to the original text
Source(s)
Date
14 Apr 2026
Status
GR approved as amended
Subject
Meeting(s)

Proposal to amend UN R171 based on GRVA/2026/15:

  • Insert new introduction paragraph 17 establishing the regulation on current technology with continuous review based on data
  • Amend paragraphs on system boundaries, driver disengagement detection, manoeuvre initiation, and Risk Mitigation Function
  • Clarify driver state monitoring and visual engagement assessment
  • Update terminology for powertrain
  • Delete duplicate definitions
  • Add processes for safety management during operation phase
  • Insert definition of “Evidence”
  • Clarify base and extended test requirements
  • Update language from “cyclist” to “bicycle” in test scenarios

UNECE server
Excerpts from session reports
GRVA | Session 25 | 18-22 May

41. During the consultations, the expert from CLEPA presented the status report of the Task Force on Advanced Driver Assistance Systems (GRVA-25-05), providing an overview of the documents submitted for review and their descriptions, the guidance sought from GRVA on the introduction of the “highway-like road” concept in the 01 series of amendments, and considerations for the next phase of DCAS. The expert from China stated that this concept was incompatible with China’s road classification system. The expert from France noted that the concept was intended for the 02 series of amendments only. The expert from Norway inquired about the potential safety benefits of introducing this concept. The experts reviewed the official documents tabled under this agenda item and considered amendment proposals submitted by the expert from the United Kingdom. They subsequently drafted informal documents GRVA-25-56, GRVA-25-57 and GRVA-25-58.

42. During the official part of this session, GRVA:

  1. Endorsed a status report (GRVA-25-05) of the Task Force on Advanced Driver Assistance Systems.
  2. Noted ECE/TRANS/WP.29/GRVA/2026/15 and ECE/TRANS/WP.29/GRVA/2026/17.
  3. Requested the secretariat to distribute informal GRVA-25-46 (part 3 only) with an official symbol in September 2026.

43. GRVA adopted the following documents and requested the secretariat to submit them to WP.29 and AC.1 for consideration and vote in November 2026:

  1. ECE/TRANS/WP.29/GRVA/2026/16 (amended by GRVA-25-56),
  2. ECE/TRANS/WP.29/GRVA/2026/18 (amended by GRVA-25-57).

44. GRVA adopted ECE/TRANS/WP.29/GRVA/2026/14 (amended by GRVA-25-58) and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote in June 2026.