From UN R79 to UN R171: NATM Multi-Pillar Framework in DCAS Regulation

The introduction of Connected and Automated Vehicles (CAVs) represents a paradigm shift in transportation, promising enhanced safety, efficiency, and accessibility. However, the deployment of these technologies requires a robust regulatory framework to ensure their safe integration into existing transportation systems. This paper examines the role of UN Regulation 171 on Driver Control Assistance Systems (DCAS) in shaping the future of CAVs. As the automotive industry progresses towards higher levels of automation, from the current SAE Level 2 vehicles to the aspired Level 5 fully autonomous cars, the importance of clear regulatory guidelines becomes mandatory. This regulation provides a standardized approach to DCAS, ensuring consistency across different manufacturers and countries, but also to Approval Authorities and Technical Services. UN R171 aims to cover the gap between current ADAS systems already covered by UN Regulations, and CAV systems, under development within the different regions.