North Carolina General Statutes Chapter 136. Transportation § 136-35. Cooperation with other states and federal government

It shall also be the duty of the Department of Transportation, where possible, to cooperate with the state highway commissions of other states and with the federal government in the correlation of roads and other transportation systems so as to form a system of intercounty, interstate, and national highways and transportation systems. The Department of Transportation may enter into reciprocal agreements with other states and the United States Department of Transportation to perform inspection work and to pay reasonable fees for inspection work performed by others in connection with supplies and materials used in transportation construction and repair.