Ind. Code § 8-2-18-4

Sec. 4. The Indiana department of transportation may require from a person, firm, limited liability company, or corporation any information necessary to the determination of whether the department shall give its approval to a claim under this chapter. If a request for information is refused by the injured person, the department may decline the claim, and the claim shall not be sued upon thereafter. If the information is refused, a request for information evaded, or the search for information by the department be made difficult by the carrier, the department shall endorse the fact on the claim and the endorsement shall support any action as if approved by the department.