This document consolidates amendments to WP.29/2026/86 by GRVA/2026/14, GRVA-25-46, and GRVA-25-51. It proposes to amend para. 5.5.4.2.8.2., renumber reference to para. 5.3.7.2.1.1.1. to 5.3.7.2.4.10., amend paras. 5.3.7.2.4.2., 5.3.7.2.5.3.1., 5.3.7.2.6.1., 6.4.2., and 7.2.3.1., replace “definitely” with “definitively” in para. 14.2. and Annex 3 paras. 3.1.1.a and 3.1.1.b, insert new para. 16.2.3. effective 1 September 2029, amend Annex 1 para. 6.4., renumber reference in Annex 3 para. 3.5.7., amend Annex 3 Appendix 2 para. 2.3.2., amend text in Annex 4 diagrams at paras. 4.2.5.2.8.1.2., 4.2.5.2.10.1.1., 4.2.5.2.12.1.1., 4.2.5.2.16.1.3., and 4.2.5.2.20.1.3., delete second diagram in para. 4.2.5.2.14.1.2., amend paras. 4.2.5.2.14.2.1. and 4.2.5.2.19.2.1., and delete words in para. 4.2.5.2.19.1.1.

A version of this document with tracked changes is available.

Proposal to modify UN R171 through the 02 series of amendments, based on WP.29/2025/7, WP.29-195-05, and WP.29/2025/144, introducing modifications addressing system-initiated manoeuvres in non-highway environments and during phases of withholding hands-on requests, enhanced driver disengagement monitoring and warning strategies, controllability requirements for complex operational scenarios, speed limit assistance features, safe headway assistance, system validation through multiple assessment pillars including physical tests and in-service monitoring, and comprehensive safety management system requirements for manufacturers. Additional specifications include monitoring of DCAS operation with mandatory reporting of safety-critical occurrences to Type Approval Authorities, periodic reporting requirements with specific data collection metrics, and software identification and updating compliance with UN R156.

Base working document from the ADAS task force Small Drafting Group (SDG).

Proposal to prohibit operation of DCAS while an ADS feature is active.

Proposal to introduce an Annex 6 providing guidance on the use of the DETA internet database for the exchange of information on incidents related to DCAS operation between Type Approval Authorities.

Proposal to introduce an Annex 6 providing guidance on the use of the DETA platform to exchange information of DCAS performance incidents and remedial actions and to remove references to system-initiated manoeuvres (SIM) to reduce risks of misinterpretation of the regulation. The approval of SIM has not yet been proposed by the ADAS task force.

Proposal to clarify the requirements for the activation of direction-indicator lamps to ensure compatibility with driver control assistance systems as permitted under UN Regulation No. 171.