Proposal to add Annex 5 Special provisions for the testing of vehicles equipped with an Automated Driving System (ADS) to UN R138. The proposal amends paragraphs 2.7 and 2.8, inserts new paragraphs 2.13 to 2.16 defining ADS, Dynamic Driving Task, bi-directional vehicles, and forward direction, renumbers former paragraph 2.13 to 2.17, amends paragraph 6.2.5 regarding available AVAS sounds, amends Annex 1 item 1.2.2, amends Annex 3 paragraph 3.3.1 regarding testing conditions for bi-directional vehicles, and adds the new Annex 5 explaining how to adapt UN R138 to vehicles equipped with an ADS.

The subgroup on UN R51 and UN R138 met on 14 January 2026 to review comments on outcome documents. Switzerland’s sentence in 3.5. was retained for clarification. JASIC’s definition of EES footnote was changed to reference GRB-68-03. Transitional provisions remained unchanged with a new item added for Annex 1, Appendix 1. Agreement was reached on 6 dB allowance in Annex 7 paragraph 3.4. and 3 dB for three specific cases. A draft paragraph for GRB-68-03 justification will be submitted by email. Switzerland’s proposal SG-13-05-2025-07-30 will serve as basis. GRBP-82-39 includes examples for active systems generating EES and creation of part B for electric vehicles. Work on RD-