N.C. Gen. Stat. § 20-120
It shall be unlawful for any person, firm or corporation to operate, or have operated on any public highway in the State any open, flat truck loaded with logs, cotton bales, boxes or other load piled on said truck, without having the said load securely fastened on said truck.
It shall be unlawful for any firm, person or corporation to operate or permit to be operated on any highway of this State a truck or trucks on which leaf tobacco in barrels or hogsheads is carried unless each section or tier of such barrels or hogsheads are reasonably securely fastened to such truck or trucks by metal chains or wire cables, or manila or hemp ropes of not less than five-eighths inch in diameter, to hold said barrels or hogsheads in place under any ordinary traffic or road condition: Provided that the provisions of this paragraph shall not apply to any truck or trucks on which the hogsheads or barrels of tobacco are arranged in a single layer, tier, or plane, it being the intent of this paragraph to require the use of metal chains or wire cables only when barrels or hogsheads of tobacco are stacked or piled one upon the other on a truck or trucks. Nothing in this paragraph shall apply to trucks engaged in transporting hogsheads or barrels of tobacco between factories and storage houses of the same company unless such hogsheads or barrels are placed upon the truck in tiers. In the event the hogsheads or barrels of tobacco are placed upon the truck in tiers same shall be securely fastened to the said truck as hereinbefore provided in this paragraph.
Any person violating the provisions of this section shall be guilty of a Class 2 misdemeanor.
N.C. Gen. Stat. § 20-120