California Code, Government Code - GOV § 14554

(a) In order to provide for the financing of selected projects, the Treasurer may issue tax-exempt or taxable notes under this article.  Proceeds of the sale of those notes shall be deposited in the Transportation Financing Subaccount, which is hereby created as a special trust fund in the State Highway Account in the State Transportation Fund.  The funds in the subaccount shall be available for use as directed by the commission and administered by the department and to pay costs associated with the issuance or further security of the notes or for capitalized interest of up to 12 months.

(b) Any issue of notes may be secured and made more attractive to capital markets through financial instruments, including, but not limited to, the following: