It is the purpose of sections 174.21 to 174.27 to:
(1) provide access to transit for persons who have no alternative mode of transit available;
(2) increase the efficiency and productivity of public transit systems;
(3) alleviate problems of automobile congestion and energy consumption and promote desirable land use where such activities are cost-effective;
(4) maintain a state commitment to public transportation; and
(5) meet the needs of individual transit systems to the extent they are consistent with the other objectives stated above.