; (2) command and control link technologies; (3) development and integration of unmanned aircraft system traffic management into the national airspace system; (4) noise and other societal and environmental impacts; (5) informing the development of an industry consensus vehicle-to-vehicle standard; (6) safety, including collisions between advanced air mobility and unmanned aircraft systems of various sizes, traveling at various speeds, and various other crewed aircraft or various parts of other crewed aircraft of various sizes and traveling at various speeds; and (7) detect-and-avoid capabilities. (b) Duplicative research and development activities The Administrator shall ensure that research and development and other activities conducted under this section do not duplicate other Federal activities related to the integration of unmanned aviation systems or advanced air mobility. (c) Lessons learned The Administrator shall apply lessons learned from unmanned aircraft systems research, development, demonstration, and testing to advanced air mobility systems. (d) Research on approaches to evaluating risk The Administrator shall conduct research on approaches to evaluating risk in emerging vehicles, technologies, and operations for unmanned aircraft systems and advanced air mobility systems. Such research shall include— (1) defining quantitative metrics, including metrics that may support the Administrator in making determinations, and research to inform the development of requirements, as practicable, for the operations of certain unmanned aircraft systems, as described under section 44807 of title 49, United States Code; (2) developing risk-based processes and criteria to inform the development of regulations and certification of complex operations, to include autonomous beyond-visual-line-of-sight operations, of unmanned aircraft systems of various sizes and weights, and advanced air mobility systems