Proposal to clarify UN R171 on Driver Control Assistance Systems (DCAS):

• Clarifications to definitions, adding “Highway-like road” definition
• Clarifications to system boundary detection, manoeuvre initiation, and driver disengagement requirements
• Amendments permitting withholding of hands-on requests on highway-like roads up to 130 km/h
• Clarifications on Risk Mitigation Function terminology
• Amendments allowing alternative strategies for lower-speed lane changes
• Addition of operational phase safety management processes
• Clarifications on testing requirements and non-rule-based algorithm repeatability.