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 amend UN R141 under section 2 to add definitions of Automated Driving System, Dynamic Driving Task, Category X vehicles, Category Y vehicles, Logical signal, and Vehicle Master Control Switch, amend under section 5 to update performance requirements and warning signal specifications for vehicles equipped with an ADS and towed vehicles, amend Annex 1 to add a vehicle ADS status field, amend Annex 3 regarding test procedures for TPMS including deactivation of TPRS and CTIS, amend Annex 4 regarding test weight and refill functionality checks, amend Annexes 5A and 6 regarding towed vehicle communication interfaces, and insert new Annex 9 containing special testing provisions for vehicles equipped with an ADS.