Tennessee Code Title 55. Motor and Other Vehicles § 55-9-104

(a) Whenever any bus, truck or truck tractor is stopped upon the traveled portion of the highway or the shoulder next thereto, except within a business or residential district of a municipality or for any cause other than disablement or for necessary traffic stops, the following requirements shall be complied with during the period of the stop:

(b) Except during the time that lights are required to be displayed by § 55-9-401, none of the provisions of this chapter that relate to fire extinguishers, red lanterns, red flags, tire chains, flares, and fusees, shall apply to trucks and pickup trucks owned and operated by any person in the transportation of produce and farm products grown exclusively by that person in transporting them to and from market.