(a) Federal aid for transportation purposes that is administered by the commission shall be distributed to the various parts of the state for a funding cycle through the selection of highway projects in the state in a manner that is consistent with federal formulas that determine the amount of federal aid for transportation purposes received by the state. A distribution under this subsection does not include deductions made for the state infrastructure bank or other federal funds reallocated by the federal government.
(b) The commission may vary from the distribution procedure provided by Subsection (a) if it issues a ruling or minute order identifying the variance and providing a particular justification for the variance.