All money withdrawn from the State Highway Account in the State Transportation Fund shall be withdrawn in the manner provided by law upon demands made by the department.

The department may establish a revolving fund to be administered pursuant to Section 16400 of the Government Code and to serve as a revolving fund from which relocation assistance payments may be made pursuant to Chapter 16 (commencing with Section 7260) of Division 7 of Title 1 of the Government Code.