; or (D) a partnership between entities described in subparagraphs (A) through (C). (2) Underserved community The term underserved community means— (A) a community not served by existing bus routes or infrequent service; and (B) a community located in an area within a census tract that is identified as— (i) a low-income community; and (ii) a community of color. (3) Low-income individuals The term low-income individuals means an individual whose family income is at or below 150 percent of the poverty line (as that term is defined in section 673(2) of the Community Service Block Grant Act ( 42 U.S.C. 9902(2) ), including any revision required by that section) for a family of the size involved. (4) Foster care youth The term foster care youth — (A) means children and youth whose care and placement are the responsibility of the State or Tribal agency that administers a State or Tribal plan under part B or E of title IV of the Social Security Act ( 42 U.S.C. 621 et seq. and 670 et seq.), without regard to whether foster care maintenance payments are made under section 472 of such Act ( 42 U.S.C. 672 ) on behalf of such children and youth; and (B) includes individuals who were age 13 or older when their care and placement were the responsibility of a State or Tribal agency that administered a State or Tribal plan under part B or E of title IV of the Social Security Act ( 42 U.S.C. 621 et seq. and 670 et seq.) and who are no longer under the care and responsibility of such a State or Tribal agency, without regard to any such individual’s subsequent adoption, guardianship arrangement, or other form of permanency outcome. (5) Public transportation The term public transportation — (A) means regular, continuing shared-ride surface transportation services that are open to the general public or open to a segment of the general public defined by age, disability, or low income