Sec. 2. As used in this chapter, "federal highway revenues" means:
(1) money and obligation authority apportioned or allocated, or anticipated to be apportioned or allocated in the current federal fiscal year or a future federal fiscal year, to Indiana by the United States Department of Transportation under 23 U.S.C., as amended, for use on a highway improvement project; or
(2) other federal money that may be used for a highway improvement project and is available or anticipated to be available in the current federal fiscal year or a future federal fiscal year.