The trade has no name anywhere in the Tennessee code
Take the vocabulary this business uses about itself and search Title 65, Chapter 15 and the 1340-06-01 rules for any of it. Nothing comes back. Tennessee has coined no term for the trade, opened no permit class around it, given it no row of its own in the schedule and mandated no endorsement peculiar to it.
The exemption list in the economic chapter is long, and it was read in full for this page. It covers airport limousines, ambulances and hearses, charter vehicles, commuter vans, intracity transfer service, limousines, milk and perishable farm products and livestock, newspaper delivery, railroad limousines and dray, school and church vehicles, seasonal fertilizer, sedans, shuttles, taxicabs, hot mix asphalt, ore and sand and gravel and unprocessed soil products, recovered materials, petroleum distribution, and liquid asphalt. There is no general-freight entry in it. The only property-hauling exemption on the list is intracity transfer service, confined to one town or city and its suburbs.
That absence is what puts this operation inside the chapter rather than outside it. Tennessee never narrowed its motor carrier definition down to household goods and passengers the way several of its neighbors did, so general freight stayed in scope, and a light combination hauling general freight for compensation is a motor carrier for the purposes of Title 65, Chapter 15.
The answer for an operator, then, cannot be looked up under the name of the trade. It is assembled from a statutory exemption that removes a numbered range of federal parts, a permit statute with no weight in it, a schedule that does not ladder, and a cargo row that does. Those four instruments were not written together and none of them cross-references the others.