Del. Code Ann. tit. 2, § 1310
(a) The Authority may make and enforce such rules and regulations and establish, fix and revise from time to time, and charge and collect (or authorize by contract, franchise, lease or otherwise, the establishment, fixing, revising, changing, charging and collecting of) such charges, fares, fees, rates, rentals and tolls for the use of any transportation facility, or parts or sections thereof, operated by the Authority, as the Authority may deem necessary, proper, desirable or reasonable, subject to this chapter. The Authority may contract with any person desiring the use of any part of such transportation facilities, including rights-of-way for placing thereon, telephone, telegraph, electric light or power lines, gas stations, garages, restaurants and advertisements or for any other purposes, and fix the terms, conditions, charges, fares, fees, rates, rentals and tolls for such use. Such charges, fares, fees, rates, rentals and tolls shall be so fixed and changed from time to time in respect to the aggregate of charges, fares, fees, rates, rentals and tolls from any such transportation facility in order to provide a fund sufficient with other available revenues, if any:
(b) The State hereby irrevocably pledges and assigns the motor fuel taxes imposed pursuant to Chapter 51 of Title 30, as amended, and the annual motor carrier registration fees imposed pursuant to § 5211(a) of Title 30, as amended, collected by the State and deposited to the credit of the Authority to pay principal of, premium, if any, and interest on bonds of the Authority issued to finance the cost of transportation facilities as provided below. The State shall transfer all motor fuel taxes, and the annual motor carrier registration fees, as defined herein and in § 5206 of Title 30, as amended, to the Authority for deposit into a motor fuel tax collection fund and a motor carrier registration collection fund. The Authority shall apply motor fuel taxes, and annual motor carrier registration fees, in the following order and for the following purposes, to the extent such revenues are available:
(c) Prior to the application of revenues derived from the Delaware Turnpike to any other purpose, the Authority shall apply such charges, fares, fees, rates, rentals and tolls collected from or with respect to the operation of the Delaware Turnpike in the following order and for the following purposes, to the extent such revenues are available for such purposes:
62 Del. Laws, c. 164, §§ 1, 2; 63 Del. Laws, c. 179, § 30; 63 Del. Laws, c. 387, §§ 42(c)-(f)