Indiana Code Title 8. Utilities and Transportation § 8-15-2-16

(1) either at law or in equity, by suit, action, mandamus, or other proceedings, protect and enforce any and all rights under the laws of the state or granted by this chapter or under any applicable trust agreement or the resolution authorizing the issuance of such bonds;  and

(2) enforce and compel the performance of all duties required by this chapter or by any applicable trust agreement or resolution to be performed by the authority or by any officer thereof, including the fixing, charging, and collecting of tolls.