The document discusses the status of autonomous driving system (ADS) regulations across multiple expert groups. GRBP completed all regulations; GRE adopted R48 and R45; GRPE, GRSG, and GRSP have working documents under review for WP.29’s 199th session; GRVA completed remaining regulations. GRBP, GRPE, GRSG, and GRVA task forces will disband after June 2026. GRSP AVRS will continue work on Y category crash requirements and GRE AVSR on ADS marker lamps. Work on ESC will be handled separately without a dedicated group.

Proposal from the GRE EMC informal working group. The modifications extend the regulation’s scope to vehicles without driver compartments or manual controls. Changes include new definitions for ADS test configurations, updated immunity-related functions to address ADS sensor performance, and revised test conditions for vehicles with active ADS features. Additional reporting requirements for ADS systems are introduced in regulatory forms.

Seven UN Regulation proposals were reviewed for consistency and errors. Issues identified include: unclear optical-logical signal transitions in R64; redundant definitions that should reference RE3 via footnotes; inconsistent ADS activity terminology requiring standardization to “when an ADS feature is active”; incorrect Category Y vehicle references in R51; spelling and numbering errors across multiple regulations; inconsistent Mass in Running Order definitions; and unclear testing provisions requiring improved cross-referencing. Corrections are necessary for regulatory robustness.

Results of the review of proposals for UN Regulations R28, R51, R64, R138, R141, R142, and R165 regarding autonomous vehicle readiness. Key findings include: inconsistent Mass in Running Order definitions between R51 and R138 versus RE3; unclear special testing provisions in R64, R138, and R165; need for clarification on ADS optical and logical signal transition in R64; redundant full definitions from RE3 in multiple proposals should reference RE3 via footnote instead; inconsistent ADS activity terminology across R64, R141, and R165 should be standardized; incorrect Category Y references in R51 Table 2; and definition and spelling errors in R51, R138, R141, and R165.

Proposal to account for vehicles of category X and to extend its application to vehicles without driver and manual driving controls. New sections introduce definitions for Automated Driving System features (ADSF-1 and ADSF-2) and establish requirements for door closure warning systems and locking devices for vehicles equipped with ADSF-2. Vehicles of category Y are excluded from scope. Various paragraphs are amended regarding door systems, locking mechanisms, and impact definitions to address automated driving scenarios.

UN R13 and UN R78 establish different brake system requirements for 4-wheel vehicles. R13H requires split service brake systems with front/rear proportioning; R78 permits split service brake systems, combined brake systems, or two separate service brake systems without proportioning requirements. Type-O dry braking tests differ: R13H requires engine disconnected at 100 km/h with stopping distance 0.1v + 0.0060 v² and MFDD 6.43 m/s²; R78 specifies multiple tests at 40, 60, and 100 km/h with varying requirements. Type-I brake fade tests use different snub protocols and performance thresholds. Secondary braking failure criteria differ at specified speeds. R78 requires wet brake testing, a 30 km/h dynamic park brake test with 18% gradient and 5 minutes hold time; R13H specifies static gradient tests. R78 includes detailed ABS, functional safety, and regenerative braking requirements; R13H does not.