; (v) members of the American Association of State Highway Transportation Officials; (vi) members of the Association of Fish and Wildlife Agencies; (vii) experts in the field of wildlife-vehicle collisions; (viii) nongovernmental organizations; and (ix) other interested stakeholders, as appropriate. (2) Standardized national data system with voluntary template implementation The Secretary shall— (A) develop a template for State implementation of a standardized national wildlife collision and carcass data system for the National Highway System that is based on the standardized methodology developed under paragraph (1); and (B) encourage the voluntary implementation of the template developed under subparagraph (A). (3) Reports (A) Methodology The Secretary shall submit to Congress a report describing the standardized methodology developed under paragraph (1) not later than the later of— (i) the date that is 18 months after the date of enactment of the America's Transportation Infrastructure Act of 2019 ; and (ii) the date that is 180 days after the date on which the Secretary completes the development of the standardized methodology. (B) Implementation Not later than 4 years after the date of enactment of the America's Transportation Infrastructure Act of 2019 , the Secretary shall submit to Congress a report describing— (i) the status of the voluntary implementation of the standardized methodology developed under paragraph (1) and the template developed under paragraph (2)(A); (ii) whether the implementation of the standardized methodology developed under paragraph (1) and the template developed under paragraph (2)(A) has impacted efforts by States, units of local government, and other entities— (I) to reduce the number of wildlife-vehicle collisions; and (II) to improve habitat connectivity; (iii) the degree of the impact described in clause (ii)