In the discretion of the authority, the bonds may be further secured by a trust agreement by and between the authority and a corporate trustee, which may be any trust company or bank incorporated under the laws of the United States or the laws of any state in the United States. Any such trust agreement may pledge or assign income, fees or any other revenues and receipts to be received from a lessee or other user of railroad properties and facilities, whether or not they are related thereto. The bonds may be additionally secured by a mortgage, deed of trust or other security interest upon the railroad properties and facilities vesting in the trustee power to sell such project for the payment of indebtedness, power to operate a project and all other powers and authority for the further security of the bonds. The trust agreement may evidence a pledge of all or any part of the revenues to be derived from the project for the payment of the principal of, premium, if any, and interest on the bonds as the same shall become due and payable and may provide for the creation and maintenance of reserves. Any such trust agreement or any resolution providing for the issuance of bonds may contain such provisions for protecting and enforcing the rights and remedies of the holders thereof as may be reasonable and proper and not in violation of the law, including the duties of the authority and the lessee or other user in relation to the railroad properties and facilities and any construction, improvement, maintenance, repair, operation and insurance of same for which such bonds have been issued, and the custody, safekeeping, guarding and application of all moneys. Any such trust agreement may set forth the rights and remedies of the bondholders and of the trustee, and may restrict the individual right of action by bondholders as is customary in trust agreements or trust indentures securing bonds and debentures of corporations. In addition to the foregoing, any such trust agreement may contain such provisions as the authority may deem reasonable and proper for the security of the bondholders and may also contain provisions governing the issuance of bonds to replace lost, stolen or mutilated bonds. All expenses incurred by the authority in carrying out the provisions of such trust agreement may be treated as a part of the costs of the operation of the railroad properties and facilities with respect to which the bonds have been issued. Any trust agreement made in accordance with the provisions of this chapter may contain a provision that, in the event of a default in the payment of the principal of, redemption premium, if any, or the interest on the bonds issued in accordance with or relating to such agreement, or in the performance of any agreement contained in the proceedings, trust agreement or instruments relating to such bonds, such payment and performance may be enforced by mandamus or by the appointment of a receiver in equity with power to charge and collect rates, rents or contract payments and to apply the revenues from the project in accordance with such proceedings, trust agreement or instrument. Any mortgage or deed of trust to secure bonds issued in accordance with the provisions of this chapter may also provide that in the event of a default in the payment thereof or in the violation of any agreement contained in the mortgage or deed of trust, the property secured by the mortgage or deed of trust may be foreclosed and sold under proceedings in equity or in any other manner now or hereinafter permitted by law. Such mortgage or deed of trust may also provide that any trustee under such mortgage or deed of trust, or the holder of any of the bonds secured thereby, may become the purchaser at any foreclosure sale if it is the highest bidder therefor.

The powers herein granted may be exercised whether or not a trust agreement is entered into and, if no trust agreement is entered into, such provisions as are above authorized may be set out in the resolution authorizing the bonds.