(a) The department annually shall:
(1) develop and publish on the department’s Internet website a forecast of all funds the department expects to receive, including funds from this state and the federal government; and
(2) use that forecast to guide planning for the unified transportation program.
(b) The department shall collaborate with local transportation entities to develop scenarios for the forecast required by Subsection (a) based on mutually acceptable funding assumptions.

(c) Not later than September 1 of each year, the department shall prepare and publish on the department’s Internet website a cash flow forecast for a period of 20 years.