(a) Subject to Subsections (e) and (f), the district may issue bonds or other obligations to finance the construction, maintenance, or operation of road projects authorized by Section 6917.051 or 6917.053.
(b) The district may issue, by public or private sale, bonds, notes, or other obligations payable wholly or partly from assessments in the manner provided by:
(1) Subchapter J, Chapter 375, Local Government Code; or
(2) Subchapter A, Chapter 372, Local Government Code, if an improvement project financed by an obligation issued under this subsection will be conveyed to or operated and maintained by a municipality or retail utility provider under an agreement between the district and the municipality or retail utility provider entered into before the issuance of the obligation.

(c) The district may issue by competitive bidding or negotiated sale bonds or other obligations, payable wholly or partly from any available revenue of the district, to pay for an improvement project.
(d) The district may issue by competitive bidding or negotiated sale bonds or other obligations, payable wholly or partly from any available revenue of the district or contract revenue from another district that is secured by ad valorem taxes imposed by or other revenue from the other district, to pay for a joint utility or road project.
(e) The district may not issue bonds or other obligations payable wholly or partly from ad valorem taxes to finance a road project unless the issuance is approved by a vote of a two-thirds majority of the district voters voting at an election held for that purpose.
(f) At the time of issuance, the total principal amount of bonds or other obligations issued or incurred to finance road projects and payable from ad valorem taxes may not exceed one-fourth of the assessed value of the real property in the district.