In order to further the purposes and policies of section 73 and Title 30-A, chapter 187, subchapter 2, encourage sound transportation planning and protect the integrity of regional transportation systems and thereby prevent or reduce the need for costly future capacity or retrofitting expenditures associated with unmanaged development along state transportation corridors, the department shall administer a program of transportation planning incentive funding as described in this section. [2007, c. 208, §1 (NEW).]