; (B) delivers a variety of Federal, State, and local programs; and (C) performs planning functions and provides professional and technical assistance. (17) Rural planning organization The term rural planning organization means a voluntary regional organization of local elected officials and representatives of local transportation systems— (A) that— (i) works in cooperation with the department of transportation (or equivalent entity) of a State to plan transportation networks and advise officials of the State on transportation planning; and (ii) is located in a rural area— (I) with a population of not less than 5,000; and (II) that is not located in an area represented by a metropolitan planning organization; or (B) that is a regional transportation planning organization, as defined in section 5303 of title 49, United States Code. (18) Secretary The term Secretary means the Secretary of Housing and Urban Development. (19) State The term State has the meaning given the term in section 5302 of title 49, United States Code. (20) Sustainable development The term sustainable development means development that— (A) fulfills a current and future social need of a community; (B) promotes economic competitiveness or growth and creates new economic opportunity