\nIt shall be the duty of the law-enforcement officers of the State, and of each county, city or town, to enforce the rules promulgated hereunder in their respective jurisdictions; and such officers shall have the power to stop any motor vehicle upon the highways of this State for the purpose of determining whether or not such motor vehicle is being operated in violation of such rules. (1961, c. 505, s. 5.)
North Carolina Legal Code