In at least 14 states, legislatures are actively involved in managing and overseeing surplus DOT funds.

In most states, unspent transportation dollars revert to a DOT-administered transportation fund at the end of the fiscal year or biennium. In at least 14 states, legislatures are actively involved in management and oversight of these surplus funds, for example by requiring additional legislative appropriation or expenditure authority before a DOT can spend the money.