N.C. Gen. Stat. § 20-128.2: Motor vehicle emission standards.

(a) The rules and regulations promulgated pursuant to G.S. 143-215.107(a)(6) shall be implemented when the Environmental Management Commission certifies to the Commissioner of Motor Vehicles that the ambient air quality in an area will be improved by the implementation of a motor vehicle inspection/maintenance program within a specified county or group of counties, as necessary to effect attainment or preclude violations of the National Ambient Air Quality Standards for carbon monoxide or ozone; provided the Environmental Management Commission may prescribe different vehicle emission limits for different areas as may be necessary and appropriate to meet the stated purposes of this section.

(b) Repealed by Session Laws 1993 (Reg. Sess., 1994), c. 754, s. 5. (1979, 2nd Sess., c. 1180, s. 2; 1989, c. 391, s. 1; 1993 (Reg. Sess., 1994), c. 754, s. 5.)