Tennessee Code Title 55. Motor and Other Vehicles § 55-12-103

(a) Except as otherwise specifically provided, the commissioner shall administer and enforce this chapter, may make rules and regulations necessary for its administration, and shall provide for hearings upon request of persons aggrieved by orders or acts of the commissioner under this chapter; provided, that the requests are made within twenty (20) days following the order or act and that failure to make the request within the time specified shall without exception constitute a waiver of the right.

(b) Any person aggrieved by an order or act of the commissioner under this chapter may seek judicial review of the order or act as provided by § 4-5-322.