; (ii) set targets for the reduction of transportation emissions and implementation of the projects and strategies identified under clause (i); (iii) be appropriate to the population density and context of the State, including a metropolitan planning organization within the State, if any; (iv) provide a reasonable opportunity for participation and review by interested parties within the State; (v) be updated not less frequently than once every 3 years; and (vi) be reviewed and certified by the Secretary to have met the requirements of this subparagraph. (2) Carbon reduction strategy planning incentive (A) In general A State shall use 50 percent of the amounts made available to the State under subsection (b) for each fiscal year for the eligible activities under subparagraph (B). (B) Eligible activities (i) In general A State and any metropolitan planning organization in the State that is required to obligate funds in accordance with subsection (e) may use the funds under subparagraph (A) for a project or strategy described in subsection (c)(2). (ii) Additional eligibility incentive In addition to the eligible activities under clause (i), a State and any metropolitan planning organization in the State that is required to obligate funds in accordance with subsection (e) may use the funds under subparagraph (A) for a project eligible under section 133(b) if— (I) the State has, within the fiscal year prior to the fiscal year in which the Secretary is making the grant or by a deadline established by the Secretary in the fiscal year in which the Secretary is making the grant, developed a carbon reduction strategy under paragraph (1)(A) that has been approved by the Secretary under clause (vi) of that paragraph