Federal law has authorized appropriations for expenditure for public mass transportation on highways in rural areas in order to enhance access of rural area populations to employment, health care, retail centers, education, and public services. The purpose of this chapter is to implement that program in this state. The boards of supervisors, city councils, and the department are authorized to do all things necessary and proper in their respective jurisdictions to secure the federal funds for use on rural highway public mass transportation projects in accordance with the intent of federal law and of this chapter.