; and (B) the signatories to the Compact have established a dedicated funding source for capital projects for the Transit Authority that is expected to raise, in total, at least $300,000,000 annually. (f) Availability Amounts appropriated pursuant to the authorization under this section shall remain available until expended. (g) Definitions In this section— (1) the term “Transit Authority” means the Washington Metropolitan Area Transit Authority established under Article III of the Compact; and (2) the term “Compact” means the Washington Metropolitan Area Transit Authority Compact ( Public Law 89–774 ; 80 Stat. 1324).