N.C. Gen. Stat. § 20-138.2C

A person commits the offense of operating a commercial motor vehicle while possessing alcoholic beverages if the person drives a commercial motor vehicle, as defined in G.S. 20-4.01(3d), upon any highway, any street, or any public vehicular area within the State while having an open or closed alcoholic beverage in the passenger area of the commercial motor vehicle. This section shall not apply to the driver of a commercial motor vehicle that is also an excursion passenger vehicle, a for-hire passenger vehicle, a common carrier of passengers, or a motor home, if the alcoholic beverage is in possession of a passenger or is in the passenger area of the vehicle.