Ark. Code Ann. § 23-13-302: Authority of department

The Arkansas Department of Transportation may, in all matters within its jurisdiction, issue subpoenas, subpoenas duces tecum, and all necessary process in proceedings pending before the department; may administer oaths, examine witnesses, compel the production of records, books, papers, files, documents, contracts, correspondence, agreements, or accounts necessary for any investigation being conducted; and may certify official acts.