North Carolina General Statutes Chapter 105. Taxation § 105-449.122. Equipment requirements

(a) Metered Pumps.--All motor fuel dispensed at retail must be dispensed from metered pumps that indicate the total amount of fuel measured through the pumps. Each pump must be marked to indicate the type of motor fuel dispensed.

(b) Truck Equipment.--A highway vehicle that transports diesel fuel in a tank that is separate from the fuel supply tank of the vehicle may not have a connection from the transporting tank to the motor or to the supply tank of the vehicle.