Oregon Revised Statutes Highways, Roads, Bridges and Ferries § 391.125

(1) The Regional Light Rail Extension Bond Account is created as a separate and distinct subaccount in the Regional Light Rail Extension Construction Fund. In each fiscal year in which any amounts of principal or interest are due and payable on any revenue bonds issued under ORS 391.140, the Director of Transportation shall cause to be transferred from the Regional Light Rail Extension Construction Fund to the Regional Light Rail Extension Bond Account an amount, which, when added to the moneys on deposit in the account that are available to be used for such purpose, shall be sufficient to pay when due all amounts of principal and interest coming due on such bonds in that fiscal year.

(2) All moneys on deposit from time to time in the Regional Light Rail Extension Bond Account, together with all investment earnings thereon, shall be pledged and are continuously appropriated to the payment of the bonds issued under ORS 391.140. All investment earnings on moneys on deposit from time to time in the Regional Light Rail Extension Bond Account shall be retained in that account and applied to pay the principal of and interest on bonds issued under ORS 391.140.