Applicable to Macon County only, subjects a motor vehicle combination operated on US Route 64 between State Road 1533 and NC Highway 106 in Macon County that is in violation of subsection (a) or subsection (b) of GS 20-115.1 (setting out size limitation on motor vehicle combinations consisting of a truck tractor and two trailing units, and motor vehicle combinations consisting of a semitrailer of not more than 53 feet in length and a truck tractor that may be operated the state's highways) to the axle-group weight penalties under GS 20-118(e). Specifies that the penalties apply to the amount by which the motor vehicle combination Gross Vehicle Weight Rating (GVWR) exceeds 20,000 pounds. Effective December 1, 2023, and applies to offenses committed on or after that date.