; (4) to identify— (A) barriers to the adoption of smart community transportation technologies; and (B) any research, development, and other assistance that is needed that could be included in the smart community resource guide; and (5) for other purposes, as identified by the Secretary or the advisory committee. (f) Revision The Secretary and the advisory committee shall issue a revised smart community resource guide not less frequently than once every 3 years. 5. 21st century transportation workforce (a) Definitions In this section: (1) Apprenticeship readiness program The term apprenticeship readiness program means a curriculum or program designed to prepare young people and transitioning adults to enter and succeed in a registered apprenticeship program. (2) Center of excellence The term Center of Excellence means a consortium of public institutions of higher education designated as a Center of Excellence in Advanced Transportation Workforce Training under subsection (e)(1). (3) Institution of higher education The term institution of higher education has the meaning given the term in section 101 of the Higher Education Act of 1965 ( 20 U.S.C. 1001 ). (4) Intelligent transportation technology The term intelligent transportation technology means an operational system of various technologies that, when combined and managed, improve the operating capabilities of the overall transportation system. (5) Registered apprenticeship program The term registered apprenticeship program means a program registered under the Act of August 16, 1937 (commonly known as the National Apprenticeship Act ; 50 Stat. 664, chapter 663; 29 U.S.C. 50 et seq.). (6) Secretaries The term Secretaries means— (A) the Secretary